中文数据手册

3ཚ‫ڢ‬Ă‫گ‬ሯำĂ‫ࡼࠀگ‬Ă16/24࿋∑-Δ
ADCాዃೌాᅏ՗‫ٷݣ‬ഗࢅएጚ‫ۉ‬უᇸ
AD7792/AD7793
ࠀీ઀཮
༬Ⴀ
ᆌᆩ
ඤ‫ۉ‬౾֪ଉ
RTD֪ଉ
ඤ௺‫ۉ‬ፆ֪ଉ
ഘ༹‫ݴ‬ဆ
߾ᄽࡗ‫ײ‬੦዆
ᅏഗᅏ՗
Սၻ๕ᅏഗᅏ՗
ეᅂ‫ݴ‬ဆ
዇ీ݀พऐ
ᅂ၎/ഘ၎෥೷ᅏ
6࿋DVM
AVDD
REFIN(+)/AIN3(+) REFIN(–)/AIN3(–)
VBIAS
BAND GAP
REFERENCE
GND
AVDD
AIN1(+)
AIN1(–)
AIN2(+)
AIN2(–)
MUX
BUF
Σ-Δ
ADC
IN-AMP
SERIAL
INTERFACE
AND
CONTROL
LOGIC
AVDD GND
IOUT1
INTERNAL
CLOCK
IOUT2
CLK
AD7792: 16-BIT
AD7793: 24-BIT
DOUT/RDY
DIN
SCLK
CS
DVDD
04855-001
ፌߛ23࿋ᆶၳ‫ݴ‬Ր୲
਩‫(ߵݛ‬RMS)ሯำ
40 nV)4.17 Hz้*
85 nV)16.7 Hz้*
‫ୁۉ‬ǖ400 μA)‫ۆ‬႙ኵ*
ู‫ۉ‬ఇ๕ǖ1 μA)ፌ‫ٷ‬ኵ*
‫گ‬ሯำ੗Պ‫ײ‬ሺᅮᅏ՗‫ٷݣ‬ഗ
‫ټ‬ဤएጚ‫ۉ‬უᇸLj‫ۆ‬႙࿒೏ኵྺ4 ppm/°C
߸ႎ໏୲ǖ4.17 Hz዁470 Hz
3ֶ߲‫ݴ‬๼෇
ాև้ዓና‫ږ‬ഗ
50 Hz/60 Hzཞ้ᅞ዆
੗Պ‫ୁۉײ‬ᇸ
ೌాೋዃ‫ۉ‬უ݀ิഗ
භ܏‫ୁۉ‬
‫ۉ‬ᇸ‫ۉ‬უǖ2.7 V዁5.25 V
࿒‫ྷݔ܈‬ǖ-40ņ዁+105ņ
‫܀‬૬থ੨‫ۉ‬ᇸ
16ᆅগTSSOP‫ހ‬ጎ
থ੨
! ෙ၍๕‫ز‬ႜথ੨
SPI®ĂQSPI™ĂMICROWIRE™ࢅDSPग़ඹ
SCLKᆅগా‫ڦ‬แ௢༬‫݀ة‬
GND
཮2/!
߁ຎ!
AD7792/AD7793ྺ๢ࢇߛ৛‫֪܈‬ଉᆌᆩ‫ࡼࠀگڦ‬Ă‫گ‬ሯ
ำĂྜኝఇెമ‫܋‬Ljాዃᅃ߲‫گ‬ሯำĂ‫ټ‬ᆶෙֶ߲‫ݴ‬ఇె
๼෇‫ڦ‬16࿋/24࿋Σ-Δ႙ADCă໲࣏ण‫ׯ‬କೌా‫گ‬ሯำᅏ՗
‫ٷݣ‬ഗLjᅺܸ੗኱থ๼෇ၭ႑ࡽă‫ړ‬ሺᅮยዃྺ64Ă߸ႎ
໏୲ྺ4.17 Hz้Lj਩‫(ߵݛ‬RMS)ሯำྺ40 nVă
ଇ੼ഗॲ߳ጲాዃᅃ߲৛௢‫گ‬ሯำĂ‫گ‬೏ᅎాև‫ټ‬ဤएጚ
‫ۉ‬უᇸLjܸ൐ᄺ੗֑ᆩᅃ߲ྔևֶ‫ݴ‬एጚ‫ۉ‬უăഄ໲ೌా
༬Ⴀ࣏Ԉઔ੗Պ‫ײ‬घ૤‫ୁۉ‬ᇸĂභ܏‫ୁۉ‬ᇸࢅೋዃ‫ۉ‬უ݀
ิഗăೋዃ‫ۉ‬უ݀ิഗᆩᇀॽཚ‫ࠌڦڢ‬ఇ‫ۉ‬უยዃྺ
AVDD/2ă
ഗॲ੗ᅜ֑ᆩాև้ዓईྔև้ዓ߾ፕLj๼‫؜‬ຕ਍໏୲੗
ཚࡗ෉ॲՊ‫ײ‬ยዃLj੗ሞ4.17 Hz዁470 Hz‫ాྷݔڦ‬Վࣅă
ഗॲ֑ᆩ2.7 V዁5.25 V‫ۉ‬ᇸࠃ‫ۉ‬Lj‫ۆ‬႙ࠀࡼྺ400 μALj֑
ᆩ16ᆅগTSSOP‫ހ‬ጎă
Rev. B
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113 ©2004–2007 Analog Devices, Inc. All rights reserved.
ADIዐ࿔Ӳຕ਍๮֩๟ᆈ࿔Ӳຕ਍๮֩‫ڦ‬ᅳ࿔Lj৤൩ଌ঴‫݋‬ᅳዐ੗ీ٪ሞ‫ڦ‬ᇕჾፇኯई‫݋‬ᅳ‫ٱ‬ဃLjADIփ‫݋ܔ‬ᅳዐ٪ሞ‫ֶڦ‬ᅴईᆯׂُิ‫ٱڦ‬ဃ޶ሴăසႴඓණඪࢆَᇕ‫ڦ‬ጚඓႠLj൩֖੊ADI༵ࠃ
‫ڦ‬ፌႎᆈ࿔Ӳຕ਍๮֩ă
AD7792/AD7793
ణ୤!
༬Ⴀ .................................................................................................. 1
!
฿ۙस٪ഗ ............................................................................ 19
ᆌᆩ ................................................................................................... 1
!
஢ଉ‫ײ‬स٪ഗ ....................................................................... 19
ࠀీ઀཮ ........................................................................................... 1
ADC‫ۉ‬ୟ႑တ ............................................................................... 20
߁ຎ ................................................................................................... 1
!
߁ຎ ......................................................................................... 20
Ⴊ۩૦๏ .......................................................................................... 2
!
ຕጴথ੨ ................................................................................ 21
रຍࡀ߭ ........................................................................................... 3
‫ۉ‬ୟ௮ຎ ........................................................................................ 24
้Ⴞ༬Ⴀ ........................................................................................... 6
!
ఇె๼෇ཚ‫ ڢ‬....................................................................... 24
้Ⴞ཮ ...................................................................................... 7
!
ᅏ՗‫ٷݣ‬ഗ ............................................................................ 24
ਨ‫ܔ‬ፌ‫ۨܮٷ‬ኵ ............................................................................. 8
!
ມटႠ/‫ڇ‬टႠದዃ ............................................................. 24
ESDয়ߢ ................................................................................... 8
!
ຕ਍๼‫؜‬Պஓ ....................................................................... 24
ᆅগದዃࢅࠀీ௮ຎ ..................................................................... 9
!
භ܏‫ ୁۉ‬................................................................................ 25
๼‫؜‬ሯำᇑ‫ݴ‬Ր୲ࡀ߭ .............................................................. 11
!
घ૤‫ ୁۉ‬................................................................................ 25
!
ྔևएጚ‫ۉ‬უᇸ ................................................................... 11
!
ೋዃ‫ۉ‬უ݀ิഗ ................................................................... 25
!
ాևएጚ‫ۉ‬უ ....................................................................... 12
!
एጚ‫ۉ‬უ ................................................................................ 25
‫ۆ‬႙߾ፕ༬Ⴀ ................................................................................ 13
!
ް࿋ ......................................................................................... 25
!
AVDD॔੦ഗ .......................................................................... 26
ೌాस٪ഗ .................................................................................... 14
!
ཚ႑स٪ഗ ............................................................................ 14
!
ၯጚ ......................................................................................... 26
!
ጒༀस٪ഗ ............................................................................ 15
!
থ‫ࢅں‬քਆ ............................................................................ 26
!
ఇ๕स٪ഗ ............................................................................ 15
ᆌᆩ႑တ ........................................................................................ 28
!
ದዃस٪ഗ ............................................................................ 17
!
૧ᆩඤ‫ۉ‬౾֪ଉ࿒‫ ܈‬.......................................................... 28
!
ຕ਍स٪ഗ ............................................................................ 18
!
૧ᆩRTD֪ଉ࿒‫ ܈‬............................................................... 29
IDस٪ഗ ................................................................................ 18
ྔႚ؅٫ ........................................................................................ 30
IOस٪ഗ ............................................................................... 18
!
۩ࠔኸళ ................................................................................ 30
Ⴊ۩૦๏
2007౎3ሆ—Ⴊ۩ӲA዁Ⴊ۩ӲB
߸ႎ߭๕ .................................................................................... ཚᆩ
2005౎4ሆ—Ⴊ۩Ӳ0዁Ⴊ۩ӲA
߸߀ࠀీఇ੷઀཮ ......................................................................... 1
߸߀“ਨ‫ܔ‬ፌ‫ۨܮٷ‬ኵ”և‫ ݴ‬........................................................ 8
߸߀रຍࡀ߭ ................................................................................. 3
߸߀཮17 ......................................................................................... 22
߸߀रຍࡀ߭࿂ጀ1 ....................................................................... 5
߸߀ຕ਍๼‫؜‬Պஓև‫ ݴ‬.............................................................. 24
߸߀՗5Ă՗6Ă՗7 ..................................................................... 11
߸߀ၯጚև‫ ݴ‬................................................................................ 26
߸߀՗8Ă՗9Ă՗10 ................................................................... 12
߸߀۩ࠔኸళ ................................................................................ 30
߸߀՗16 ......................................................................................... 16
߸߀“߁ຎ”և‫ ݴ‬............................................................................ 20
ॽ“ᆌᆩ”և‫ڦݴ‬ఁ‫“ྺ߀߸׬‬ᆌᆩ႑တ” ................................. 29
߸߀“۩ࠔኸళ”և‫ ݴ‬................................................................... 30
Rev. B | Page 2 of 32
AD7792/AD7793
रຍࡀ߭
‫ݥأ‬ଷᆶຫ௽LjAVDD = 2.7 V዁5.25 VĂDVDD = 2.7 V዁5.25 VĂGND = 0 VLj໯ᆶࡀ߭਩၎‫ܔ‬ᇀTMIN዁TMAXܸჾă
՗1.
AD7792B/AD7793B 1
‫ڇ‬࿋
4.17 ዁ 470
24
16
HzLjՔ‫׬‬ኵ
࿋Ljፌၭኵ
࿋Ljፌၭኵ
±15
! ‫ۉ‬ᇸᅞ዆
±1
±10
±10
±1
±3
100
ppm(஢ଉ‫ڦྷݔײ‬
ӥྤ‫)୲ݴ‬Ljፌ‫ٷ‬ኵ
μVLj‫ۆ‬႙ኵ
nV/°CLj‫ۆ‬႙ኵ
μVLj‫ۆ‬႙ኵ
ppm/°CLj‫ۆ‬႙ኵ ሺᅮ = 1዁16Ljྔևएጚ‫ۉ‬უ
ppm/°CLj‫ۆ‬႙ኵ ሺᅮ = 32዁128Ljྔևएጚ‫ۉ‬უ
AIN = 1 V/ሺᅮLjሺᅮ ≥ 4Ljྔևएጚ‫ۉ‬უ
dBLjፌၭኵ
ఇె๼෇
! ֶ‫ݴ‬๼෇‫ۉ‬უ‫ྷݔ‬
±VREF/ሺᅮ
V nom
VREF = REFIN(+) − REFIN(−)Ljईాևएጚ‫ۉ‬უLj
ሺᅮ = 1዁128
GND – 30 mV
AVDD + 30 mV
GND + 100 mV
AVDD – 100 mV
GND + 300 mV
AVDD – 1.1
0.5
V min
V max
V min
V max
V min
V max
V min
ሺᅮ = 1ई2
±1
±250
±2
nA max
pA max
pA/°C typ
ሺᅮ = 1ई2Lj߸ႎ໏୲ < 100 Hz
ሺᅮ = 4዁128Lj߸ႎ໏୲ < 100 Hz
±400
±50
nA/V typ
pA/V/°C typ
65
80
90
dB min
dB min
dB min
‫ۆ‬႙ኵ80 dBLj50±1 HzLj60±1 HzLjFS[3:0] = 10106
‫ۆ‬႙ኵ90 dBLj50 ± 1 HzLjFS[3:0] = 10016
‫ۆ‬႙ኵ100 dBLj60 ± 1 HzLjFS[3:0] = 10006
80
94
90
dB min
dB min
dB min
‫ۆ‬႙ኵ90 dBLj50±1 HzLj60±1 HzLjFS[3:0] = 10106
‫ۆ‬႙ኵ100 dBLj50 ± 1 HzLjFS[3:0] = 10016
‫ۆ‬႙ኵ100 dBLj60 ± 1 HzLjFS[3:0] = 10006
100
100
100
dB min
dB min
dB min
AIN = 1 V/ሺᅮLjሺᅮ ≥ 4
50 ± 1 HzLj60 ± 1 HzLjFS[3:0] = 10106
50±1 Hz (FS[3:0]=1001)6, 60±1 Hz (FS[3:0]=1000)6
֖ຕ!
ADCཚ‫ڢ‬
! ๼‫߸؜‬ႎ໏୲
! ࿮฿ஓ2
! ‫ݴ‬Ր୲
! ๼‫؜‬ሯำᇑ߸ႎ໏୲
! ओ‫ݥݴ‬၍Ⴀ
!
!
!
!
฿ۙဃֶ3
฿ۙဃֶ೏ᅎᇑ࿒‫࠲ڦ܈‬ဣ4
஢ଉ‫ײ‬ဃֶ3, 5
ሺᅮ೏ᅎᇑ࿒‫࠲ڦ܈‬ဣ4
! ਨ‫ܔ‬AIN‫ۉ‬უ၌ኵ2
! ࿮࣐؋ఇ๕
! ࣐؋ఇ๕
! ᅏ՗‫ٷݣ‬ഗᆶၳ
! ࠌఇ‫ۉ‬უ(VCM)
ఇె๼෇‫ୁۉ‬
! ࣐؋ఇ๕ईᅏ՗‫ٷݣ‬ഗᆶၳ
! ! ೝ਩๼෇‫ୁۉ‬2
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
! ೝ਩๼෇‫ୁۉ‬࿒೏
࿮࣐؋ఇ๕
! ೝ਩๼෇‫ୁۉ‬
! ೝ਩๼෇‫ୁۉ‬࿒೏
‫ز‬ఇ߅ඡᅞ዆2
! ాև้ዓ
! ! ሞ50 HzĂ60 Hzཉॲူ
! ! ሞ50 Hzཉॲူ
! ! ሞ60 Hzཉॲူ
! ྔև้ዓ
! ! ሞ50 HzĂ60 Hzཉॲူ
! ! ሞ50 Hzཉॲူ
! ! ሞ60 Hzཉॲူ
ࠌఇᅞ዆
! ! ሞ኱ୁཉॲူ
! ! ሞ50 HzĂ60 Hzཉॲူ2
! ! ሞ50 HzĂ60 Hzཉॲူ2
Rev. B | Page 3 of 32
֪๬ཉॲ/ጀ๥
fADC< 242 HzLjAD7793
AD7792
९“๼‫؜‬ሯำᇑ‫ݴ‬Ր୲ࡀ߭”
९“๼‫؜‬ሯำᇑ‫ݴ‬Ր୲ࡀ߭”
ሺᅮ = 1ई2
ሺᅮ = 4዁128
VCM = (AIN(+) + AIN(−))/2Ljሺᅮ = 4዁128
ሺᅮ = 1ई2
๼෇‫ୁۉ‬ໜ๼෇‫ۉ‬უܸՎࣅ
AD7792/AD7793
֖ຕ!
एጚ‫ۉ‬უ
! ాևएጚ‫ۉ‬უ
! ! ాևएጚ‫ۉ‬უ‫؛‬๔৛‫܈‬
! ! ాևएጚ‫ۉ‬უ࿒೏2
AD7792B/AD7793B 1
‫ڇ‬࿋
֪๬ཉॲ/ጀ๥
1.17 ± 0.01%
4
15
85
VLjፌၭኵ/ፌ‫ٷ‬ኵ
ppm/°CLj‫ۆ‬႙ኵ
ppm/°CLjፌ‫ٷ‬ኵ
dBLj‫ۆ‬႙ኵ
AVDD = 4 V, TA = 25°C
2.5
0.1
AVDD
VLjՔ‫׬‬ኵ
VLjፌၭኵ
VLjፌ‫ٷ‬ኵ
REFIN = REFIN(+) − REFIN(−)
! ! ೝ਩एጚ๼෇‫ୁۉ‬
! ! ೝ਩एጚ๼෇‫ୁۉ‬࿒೏
GND − 30 mV
AVDD + 30 mV
400
±0.03
VLjፌၭኵ
VLjፌ‫ٷ‬ኵ
nA/VLj‫ۆ‬႙ኵ
nA/V/°CLj‫ۆ‬႙ኵ
! ! ‫ز‬ఇ߅ඡᅞ዆
! ! ࠌఇᅞ዆
Same as for analog inputs
100
dBLj‫ۆ‬႙ኵ
! ! ‫ۉ‬ᇸᅞ዆
ྔևएጚ‫ۉ‬უᇸ
! ! ྔևREFIN‫ۉ‬უ
! ! एጚ‫ۉ‬უ‫ྷݔ‬2
! ! ਨ‫ܔ‬REFIN‫ۉ‬უ၌ኵ2
घ૤‫ୁۉ‬ᇸ
! )IEXC1ࢅIEXC2*
! ๼‫ୁۉ؜‬
! ‫؛‬๔ඹֶ(25°C)
! ࿒೏
! ‫ୁۉ‬೅ದ
! ࿒೏೅ದ
! ‫ۉ‬უۙኝ୲(VDD)
! ޶ሜۙኝ୲
! ๼‫ۉ؜‬ᇸ‫ۉ‬უ
࿒‫ߌد܈‬ഗ!
!৛‫܈‬
!ଳ௺‫܈‬
ೋዃ‫ۉ‬უ݀ิഗ
VBIAS
VBIAS݀ิഗഔ‫้ۯ‬क़
10/210/1000
±5
200
±0.5
50
2
0.2
AVDD − 0.65
AVDD − 1.1
GND − 30 mV
μALjՔ‫׬‬ኵ
%Lj‫ۆ‬႙ኵ
ppm/°CLj‫ۆ‬႙ኵ
%Lj‫ۆ‬႙ኵ
ppm/°CLj‫ۆ‬႙ኵ
%/VLj‫ۆ‬႙ኵ
%/VLj‫ۆ‬႙ኵ
VLjፌ‫ٷ‬ኵ
VLjፌ‫ٷ‬ኵ
VLjፌၭኵ
±2
0.81
°CLj‫ۆ‬႙ኵ
mV/°CLj‫ۆ‬႙ኵ
AVDD/2
See Figure 10
VLjՔ‫׬‬ኵ
ms/nFLj‫ۆ‬႙ኵ
ాև/ྔև้ዓ
ాև้ዓ
ೕ୲2
቞੣Բ
ྔև้ዓ
ೕ୲
64 ± 3%
50:50
kHzLjፌၭኵ/ፌ‫ٷ‬ኵ
%Lj‫ۆ‬႙ኵ
64
kHzLjՔ‫׬‬ኵ
቞੣Բ
45:55 to 55:45
%Lj‫ۆ‬႙ኵ
0.8
0.4
2.0
VLjፌ‫ٷ‬ኵ
VLjፌ‫ٷ‬ኵ
VLjፌၭኵ
இड๼෇
CS2
VINLLj๼෇‫ۉگ‬ೝ
VINHLj๼෇ߛ‫ۉ‬ೝ
Rev. B | Page 4 of 32
‫ړ‬VREF = AVDD้Ljසࡕᅏ՗‫ٷݣ‬ഗᆶၳLj
ሶՂႷॽֶ‫ݴ‬๼෇၌዆ሞ0.9 × VREF/ሺᅮᅜా
IEXC1ᇑIEXC2‫ڦ‬೅ದǗVOUT = 0 V
AVDD = 5 V ± 5%
໯჋‫ྺୁۉ‬10 μAई210 μA
໯჋‫ྺୁۉ‬1 mA
ኍ‫ܔ‬ᆩࢽၯጚ࿒‫ߌد܈‬ഗ‫ڦ‬൧઄
ൽਦᇀAINᆅগฉ‫ۉڦ‬ඹኵ
๑ᆩ2‫ݴ‬ೕࠀీ้)࿋CLK1 = CLK0 = 1*Lj
੗ᅜ֑ᆩ128 kHzྔև้ዓ
๢ᆩᇀ64 kHzྔև้ዓǗසࡕ๟128 kHz้ዓLj
቞੣Բᄲ൱੗ᅜฎ‫گ‬
DVDD = 5 V
DVDD = 3 V
DVDD = 3 V or 5 V
AD7792/AD7793
֖ຕ!
SCLKĂCLKࢅDIN
)แ௢༬‫݀ة‬ഗ๼෇*2
VT(+)
VT(–)
VT(+) −VT(−)
VT(+)
VT(–)
VT(+) −VT(−)
๼෇‫ୁۉ‬
๼෇‫ۉ‬ඹ
இड๼‫(؜‬ԈઔCLK)
VOHLj๼‫ۉߛ؜‬უ2
VOLLj๼‫ۉگ؜‬უ2
VOHLj๼‫ۉߛ؜‬უ2
VOLLj๼‫ۉگ؜‬უ2
! ‫ޝ‬੣ༀ୑‫ୁۉ‬
! ‫ޝ‬੣ༀ๼‫ۉ؜‬ඹ
! ຕ਍๼‫؜‬Պஓ
ဣཥၯጚ2
஢ଉ‫ײ‬ၯጚ၌ኵ
ଭ‫ۉ‬ೝၯጚ၌ኵ
๼෇‫ྷݔ‬
‫ۉ‬ᇸᄲ൱7
‫ۉ‬ᇸ‫ۉ‬უ
AVDD዁GND
DVDD዁GND
‫ۉ‬ᇸ‫ୁۉ‬
IDD‫ୁۉ‬
IDD(ู‫ۉ‬ఇ๕)
1
2
3
4
5
6
7
AD7792B/AD7793B 1
‫ڇ‬࿋
֪๬ཉॲ/ጀ๥
1.4/2
0.8/1.7
0.1/0.17
0.9/2
0.4/1.35
0.06/0.13
V min/V max
V min/V max
V min/V max
V min/V max
V min/V max
V min/V max
DVDD = 5 V
DVDD = 5 V
DVDD = 5 V
DVDD = 3 V
DVDD = 3 V
DVDD = 3 V
±10
10
μA max
pF typ
VIN = DVDD ई GND
໯ᆶຕጴ๼෇!
DVDD − 0.6
0.4
4
0.4
V min
V max
V min
V max
DVDD = 3 V, ISOURCE = 100 μA
DVDD = 3 V, ISINK = 100 μA
DVDD = 5 V, ISOURCE = 200 μA
DVDD = 5 V, ISINK = 1.6 mA (DOUT/RDY)/800 μA
(CLK)
±10
10
Offset binary
μA max
pF typ
+1.05 × FS
−1.05 × FS
0.8 × FS
2.1 × FS
V max
V min
V min
V max
2.7/5.25
2.7/5.25
V min/max
V min/max
140
μA max
185
μA max
400
μA max
500
μA max
1
μA max
‫ۆ‬႙ኵ110 μA (AVDD = 3 V)Lj‫ۆ‬႙ኵ125 μA
(AVDD = 5 V)Lj࿮࣐؋ఇ๕Ljྔևएጚ‫ۉ‬უ
‫ۆ‬႙ኵ130 μA (AVDD = 3 V)Lj‫ۆ‬႙ኵ165 μA
(AVDD = 5 V)Lj࣐؋ఇ๕Ljሺᅮ = 1ई2Ljྔևएጚ‫ۉ‬უ
‫ۆ‬႙ኵ300 μA (AVDD = 3 V)Lj‫ۆ‬႙ኵ350 μA
(AVDD = 5 V)Ljሺᅮ = 4዁128Ljྔևएጚ‫ۉ‬უ
‫ۆ‬႙ኵ400 μA (AVDD = 3 V)Lj‫ۆ‬႙ኵ450 μA
(AVDD = 5 V)Ljሺᅮ = 4዁128Ljాևएጚ‫ۉ‬უ
࿒‫ྺྷݔ܈‬-40ņ዁+105ņăሞ߸ႎ໏୲‫ڟٳ‬19.6 Hzࢅ39.2 Hz‫ڦ‬ཉॲူLjසࡕAIN(+)ईAIN(−)ᆅগฉ‫ۉڦ‬უኵ‫ࡗג‬AVDD – 16 VLjሶINLĂ‫ۉ‬ᇸᅞ዆(PSR)Ăࠌఇ
ᅞ዆(CMR)ࢅ‫ز‬ఇ߅ඡᅞ዆(NMR)փ‫ࢇޙ‬ຕ਍๮֩रຍࡀ߭‫ڦ‬ᄲ൱ă૩සLj‫ۉُࡗגړ‬უ้LjINL‫ۆ‬႙ኵই዁஢ଉ‫ڦײ‬18 ppmLjPSR‫ۆ‬႙ኵই዁69 dBăᅺُLj
ྺԍኤኄၵ߸ႎ໏୲ူ‫ڦ‬ႠీLjఇె๼෇ᆅগฉ‫ڦ‬ਨ‫ۉܔ‬უՂႷ‫گ‬ᇀAVDD − 1.6 Vă
रຍࡀ߭࿄ঢ়ิׂ֪๬Lj‫ڍ‬๴ׂ೗‫؛‬๔݀ք้‫ڦ‬༬Ⴀຕ਍ኧ‫׼‬ă
ঢ়ၯጚLjُဃֶᇑ჋ۨ‫ڦ‬Պ‫ײ‬ሺᅮࢅ߸ႎ໏୲໯‫ܔ‬ᆌ‫ڦ‬ሯำ၎‫ړ‬ă
ሞඪᅪ࿒‫ူ܈‬৊ႜዘႎၯጚ਩੗ᅜၩ‫أ‬ኄၵဃֶă
஢ଉ‫ײ‬ဃֶ๢ᆩᇀኟĂ޶ଇዖ஢ଉ‫ײ‬Ljժሞ߾‫׍‬ၯጚཉॲူ๢ᆩ(AVDD = 4 VLjሺᅮ = 1LjTA = 25°C)ă
FS[3:0]ྺఇ๕स٪ഗዐ‫຺ڦ‬࿋Ljᆩઠ჋ስ๼‫؜‬ጴ໏୲ă
্ᆩघ૤‫ࢅୁۉ‬ೋዃ‫ۉ‬უ݀ิഗ้Ljຕጴ๼෇‫ڪ‬ᇀDVDDईGNDă
Rev. B | Page 5 of 32
AD7792/AD7793
้Ⴞ༬Ⴀ!
‫ݥأ‬ଷᆶຫ௽LjAVDD = 2.7 V዁5.25 VLjDVDD = 2.7 V዁5.25 VLjGND = 0 VLj๼෇இड0 = 0 VLj๼෇இड1 = DVDDă
՗2
֖ຕ1,2
t3
t4
‫܁‬ൽ֡ፕ!
t1
t2 3
t5 5, 6
t6
t7
ႀ෇֡ፕ
t8
t9
t10
t11
2
3
4
5
6
‫ڇ‬࿋
ns,ፌၭኵ
ns,ፌၭኵ
ཉॲ/ጀ๥
SCLKߛ‫ۉ‬ೝஞ؋੻‫܈‬
SCLK‫ۉگ‬ೝஞ؋੻‫܈‬
0
60
80
0
60
80
10
80
0
10
ns,ፌၭኵ
ns,ፌ‫ٷ‬ኵ
ns,ፌ‫ٷ‬ኵ
ns,ፌၭኵ
ns,ፌ‫ٷ‬ኵ
ns,ፌ‫ٷ‬ኵ
ns,ፌၭኵ
ns,ፌ‫ٷ‬ኵ
ns,ፌၭኵ
ns,ፌၭኵ
CSူইᄂ‫ڟ‬DOUT/RDYᆶၳ้क़
DVDD = 4.75 V዁5.25 V
DVDD = 2.7 V዁3.6 V
SCLKᆶၳᄂ‫ڟ‬ຕ਍ᆶၳჽ‫׿‬4
DVDD = 4.75 V዁5.25 V
DVDD = 2.7 V዁3.6 V
CS࿮ၳᄂࢫ‫ڦ‬ጺ၍๥‫้ݣ‬क़
0
30
25
0
ns,ፌၭኵ
ns,ፌၭኵ
ns,ፌၭኵ
ns,ፌၭኵ
CSူইᄂ‫ڟ‬SCLKᆶၳᄂยዃ้क़4
ຕ਍ᆶၳ‫ڟ‬SCLKᄂยዃ้क़
ຕ਍ᆶၳ‫ڟ‬SCLKᄂԍ‫้׼‬क़
CSฉืᄂ‫ڟ‬SCLKᄂԍ‫้׼‬क़
SCLK࿮ၳᄂ‫ڟ‬CS࿮ၳᄂ
SCLK࿮ၳᄂ‫ڟ‬DOUT/RDYߛ‫ۉ‬ೝ
ᄣೌሞ‫ْ݀؛‬ք೺क़਩ঢ়ࡗ֪๬Ljᅜඓԍ‫ࢇޙ‬Քጚᄲ൱ă໯ᆶ๼෇႑ࡽ਩ኸۨtR = tF = 5 ns)DVDD‫ڦ‬10%‫ڟ‬90%*Ljժٗ1.6 V‫ۉ‬ೝഐਸ๔ऺ้ă
֖९཮3ࢅ཮4ă
ኄၵຕኵ๟֑ᆩ཮2໯๖޶ሜ‫ۉ‬ୟ‫֪ڦ‬ଉ঳ࡕLjۨᅭྺ๼‫ੵ؜‬ሁVOLईVOH၌ኵ໯Ⴔ‫้ڦ‬क़ă
SCLKᆶၳᄂྺSCLK‫ူڦ‬ইᄂă
ኄၵຕኵઠᇸᇀ֪ଉ้क़Lj޿้क़ྺ֑ᆩ཮2໯๖޶ሜ‫ۉ‬ୟ้ຕ਍๼‫߀؜‬Վ0.5 V໯Ⴔ‫้ڦ‬क़ăথူઠLjཚࡗ‫֪ܔ‬ଉ঳ࡕ৊ႜ‫ݒ‬ၠླྀ܏Lj੗ᅜၩ‫ܔأ‬50 pF‫ۉ‬
ඹ؊Ă‫ڦۉݣ‬ᆖၚăኄᅪ࿆ጣLj้Ⴞ༬Ⴀ໯ߴ‫้ڦ؜‬क़๟޿ഗॲኈኟ‫ڦ‬ጺ၍๥‫้ݣ‬क़Ljᅺܸᇑྔևጺ၍޶ሜ‫ۉ‬ඹ࿮࠲ă
ሞ‫܁‬ൽADCኮࢫLjRDY‫ۉߛ࣮ݓ‬ೝăሞ‫ْڇ‬ገ࣑ఇ๕ࢅ૶Ⴤገ࣑ఇ๕ူLj‫ړ‬RDYྺߛ‫ۉ‬ೝ้LjසᆶՂᄲLj੗ᅜምْ‫܁‬ൽཞᅃຕ਍Lj‫ڍ‬ᆌඓԍࢫჄ‫܁‬ൽ֡ፕ‫ڦ‬
݀ิ้क़փీথৎူᅃْ๼‫߸؜‬ႎ้क़ăሞ૶Ⴤ‫܁‬ൽఇ๕ူLjຕጴጴኻీԥ‫܁‬ൽᅃْă
ISINK (1.6mA WITH DVDD = 5V,
100μA WITH DVDD = 3V)
TO
OUTPUT
PIN
1.6V
50pF
ISOURCE (200μA WITH DVDD = 5V,
100μA WITH DVDD = 3V)
཮ 2. ้Ⴞ༬Ⴀ‫޶ڦ‬ሜ‫ۉ‬ୟ
Rev. B | Page 6 of 32
04855-002
1
ሞTMINࢅTMAXཉॲူ‫ڦ‬၌ኵ(Bप)
100
100
AD7792/AD7793
้Ⴞ཮!
CS (I)
t6
t1
t5
MSB
DOUT/RDY (O)
LSB
t7
t2
t3
04855-003
SCLK (I)
t4
NOTES
1. I = INPUT, O = OUTPUT
཮3. ‫܁‬ൽዜ೺้Ⴞ཮
CS (I)
t11
t8
SCLK (I)
t9
t10
MSB
NOTES
1. I = INPUT, O = OUTPUT
཮4. ႀ෇ዜ೺้Ⴞ཮
Rev. B | Page 7 of 32
LSB
04855-004
DIN (I)
AD7792/AD7793
ਨ‫ܔ‬ፌ‫ۨܮٷ‬ኵ!
‫ݥأ‬ଷᆶຫ௽LjTA = 25°Că
՗3
֖ຕ!
AVDD዁GND
DVDD዁GND
ఇె๼෇‫ۉ‬უ዁GND
एጚ๼෇‫ۉ‬უ዁GND
ຕጴ๼෇‫ۉ‬უ዁GND
ຕጴ๼‫ۉ؜‬უ዁GND
AIN/ຕጴ๼෇‫ୁۉ‬
߾ፕ࿒‫ྷݔ܈‬
٪‫ئ‬࿒‫ྷݔ܈‬
ፌߛ঳࿒
TSSOP
θJAඤፆ
θJCඤፆ
ᆅগ࿒‫܈‬Ljࡰথ
! ഘ၎(60௱)
! ࢤྔ(15௱)
‫ۨܮ‬ኵ!
−0.3 V ዁ +7 V
−0.3 V዁ +7 V
−0.3 V ዁ AVDD + 0.3 V
−0.3 V ዁ AVDD + 0.3 V
−0.3 V ዁ DVDD + 0.3 V
−0.3 V ዁ DVDD + 0.3 V
10 mA
−40°C ዁ +105°C
−65°C ዁ +150°C
150°C
ጀᅪLj‫؜ג‬ฉຎਨ‫ܔ‬ፌ‫ۨܮٷ‬ኵ੗ీࣷ‫ڞ‬ዂഗॲᆦ৳Ⴀ໦
࣋ăኄኻ๟‫ۨܮ‬ፌኵLjփᅪ࿆ጣഗॲሞኄၵईኁඪࢆഄ໲
‫؜ג‬Ԩरຍࡀ߭ກ‫ీࠀڦ‬Ⴀ֡ፕቤব૛Ք௽‫ڦ‬ཉॲူ‫ࠀڦ‬
ీႠ֡ፕă‫׊‬೺ሞਨ‫ܔ‬ፌ‫ۨܮٷ‬ኵཉॲူ߾ፕࣷᆖၚഗॲ
‫ڦ‬੗੍Ⴀă
ESDয়ߢ
128°C/W
14°C/W
215°C
220°C
Rev. B | Page 8 of 32
ESD(ৢ‫ߌ௺)ۉݣۉ‬ഗॲă
‫ۉټ‬ഗॲࢅ‫ۉ‬ୟӱ੗ీࣷሞுᆶִਥ‫ڦ‬൧઄ူ‫ݣ‬
‫ۉ‬ă৑࠶Ԩׂ೗ਏᆶጆ૧ईጆᆶԍࢺ‫ۉ‬ୟLj‫ڍ‬ሞᇜ
‫ీߛڟ‬ଉESD้Ljഗॲ੗ీࣷ໦࣋ăᅺُLjᆌ‫֑ړ‬
ൽ๢‫ڦړ‬ESD‫ٯݔݞ‬แLjᅜՆ௨ഗॲႠీူইईࠀ
ీෟ฿ă
AD7792/AD7793
SCLK 1
16
DIN
CLK 2
15
DOUT/RDY
CS 3
14
DVDD
13
AVDD
12
GND
IOUT1 4
AD7792/
AD7793
TOP VIEW
(Not to Scale)
AIN1(+)
5
AIN1(–)
6
11
IOUT2
AIN2(+)
7
10
REFIN(–)/AIN3(–)
AIN2(–)
8
9
REFIN(+)/AIN3(+)
04855-005
ᆅগದዃࢅࠀీ௮ຎ
Figure 5. Pin Configuration
཮5. ᆅগದዃ
՗4. ᆅগࠀీ௮ຎ
ᆅগՊࡽ
1
ᆅগఁ‫!׬‬
SCLK
௮ຎ!
‫ز‬ႜ้ዓ๼෇ăᆩᇀᇑADC৊ႜຕ਍‫د‬๼ăSCLKਏᆶแ௢༬‫݀ة‬๕๼෇Ljᅺܸ޿থ੨๢ࢇ࠼߰૗ᆌ
ᆩă޿‫ز‬ႜ้ዓ੗ᅜ๟૶Ⴤ๕้ዓLj໯ᆶຕ਍਩ሞ૶Ⴤ‫ڦ‬ஞ؋‫ز‬ዐ‫د‬๼ăईኁLj໲ᄺ੗ᅜ๟‫૶ݥ‬Ⴤ๕
้ዓLjઠྫADC‫ڦ‬႑တᅜডၭ‫ڦ‬ຕ਍Ԉႚ๕‫د‬๼ă
2
CLK
้ዓ๼෇/้ዓ๼‫؜‬ᆅগăཚࡗُᆅগ੗༵ࠃాև้ዓLjईኁ্ᆩాև้ዓă‫ాړ‬և้ዓԥ্ᆩࢫLj੗
ᅜ֑ᆩྔև้ዓൻ‫޿ۯ‬ADCăኄᄣLj‫߲ܠ‬ADC੗ᅜᆯཞᅃ้ዓൻ‫ۯ‬Ljܸٗኴႜཞօገ࣑ă
3
CS
ೌ჋๼෇ᆅগăኄ๟ᅃ߲‫ۉگ‬ೝᆶၳஇड๼෇ᆅগLjᆩᇀ჋ስADCăCS੗ᅜᆩઠሞ‫ز‬ႜጺ၍ฉਏᆶ‫ܠ‬
߲ഗॲ‫ڦ‬ဣཥዐ჋ስADCLjईኁᆩፕኡཞօ႑ࡽLjᇑഗॲཚ႑ăCS੗ᅜᆩᆘ૶၍‫ݛ‬๕ዃྺ‫ۉگ‬ೝLj๑
‫ڥ‬ADCీᅜ3၍๕ఇ๕߾ፕLjཚࡗSCLKĂDINࢅDOUTᇑഗॲথ੨ă
4
IOUT1
ాևघ૤‫ୁۉ‬ᇸ‫ڦ‬๼‫؜‬ᆅগăཚࡗُᆅগ੗༵ࠃాևघ૤‫ୁۉ‬ăᆩࢽ੗ᅜཚࡗՊ‫ײ‬ยዃాևघ૤‫ୁۉ‬
ᇸLjᅜՍॽ‫ୁۉ‬ยዃྺ10 μAĂ210 μAई1 mAă੗ᅜॽIEXC1ईIEXC2ൎ࣑዁ُ๼‫؜‬ă
5
6
7
AIN1(+)
ఇె๼෇ᆅগăAIN1(+)๟ֶ‫ݴ‬ఇె๼෇‫ܔ‬AIN1(+)/AIN1(−)‫ڦ‬ኟ‫܋‬ă
AIN1(−)
AIN2(+)
ఇె๼෇ᆅগăAIN2(+)๟ֶ‫ݴ‬ఇె๼෇‫ܔ‬AIN2(+)/AIN2(−)‫ڦ‬ኟ‫܋‬ă
8
9
AIN2(−)
REFIN(+)/AIN3(+)
10
REFIN(−)/AIN3(−)
ఇె๼෇/޶एጚ‫ۉ‬უ๼෇ᆅগăREFIN(-)๟REFIN‫޶ڦ‬एጚ‫ۉ‬უ๼෇ă޿एጚ‫ۉ‬უ๼෇੗࿋ᇀGNDᇑ
AVDD−0.1 Vኮक़ăଷྔLj޿ᆅগ࣏੗ᆩፕAIN3(−)Ljनֶ‫ݴ‬ఇె๼෇‫ܔ‬AIN3(+)/ AIN3(−)‫܋޶ڦ‬ă
11
IOUT2
ాևघ૤‫ୁۉ‬ᇸ‫ڦ‬๼‫؜‬ᆅগăཚࡗُᆅগ੗༵ࠃాևघ૤‫ୁۉ‬ᇸăᆩࢽ੗ᅜཚࡗՊ‫ײ‬ยዃాևघ૤‫ۉ‬
ୁᇸLjᅜՍॽ‫ୁۉ‬ยዃྺ10 μAĂ210 μAई1 mAă੗ᅜॽIEXC1ईIEXC2ൎ࣑዁ُ๼‫؜‬ă
12
13
14
GND
AVDD
DVDD
থ‫ں‬एጚ‫ۅ‬ă
‫ۉ‬ᇸ‫ۉ‬უ(2.7 V዁5.25 V)ă
ຕጴথ੨‫ۉ‬ᇸᆅগă‫ز‬ႜথ੨ᆅগ‫ڦ‬இड‫ۉ‬ೝᇑ޿‫ۉ‬ᇸᆶ࠲Ljሞ2.7 Vᇑ5.25 Vኮक़ăDVDDᆅগ‫ۉ‬უᇑ
AVDDᆅগ‫ۉ‬უ࿮࠲ǗᅺُLjAVDD = 5 VĂDVDD = 3 VLj‫ݒ‬ኮᅨ඗ă
ఇె๼෇ᆅগăAIN1(-)๟ֶ‫ݴ‬ఇె๼෇‫ܔ‬AIN1(+)/AIN1(−)‫܋޶ڦ‬ă
ఇె๼෇ᆅগăAIN2(-)๟ֶ‫ݴ‬ఇె๼෇‫ܔ‬AIN2(+)/AIN2(−)‫܋޶ڦ‬ă
ఇె๼෇/ኟएጚ‫ۉ‬უ๼෇ᆅগă੗ᅜሞREFIN(+)ᇑREFIN(−)ኮक़แेᅃ߲ྔևएጚ‫ۉ‬უăREFIN(+)੗࿋
ᇀAVDDࢅGND + 0.1 Vኮक़ăՔ‫׬‬एጚ‫ۉ‬უ)REFIN(+)዁REFIN(−)*ྺ2.5 VLj‫޿ڍ‬ഗॲ੗ᅜ֑ᆩ0.1 V዁AVDD‫ݔ‬
ྷా‫ڦ‬एጚ‫ۉ‬უ߾ፕăଷྔLj޿ᆅগ੗ᆩፕAIN3(+)Ljनֶ‫ݴ‬ఇె๼෇‫ܔ‬AIN3(+)/AIN3(−)‫ڦ‬ኟ‫܋‬ă
Rev. B | Page 9 of 32
AD7792/AD7793
ᆅগՊࡽ
ᆅগఁ‫!׬‬
௮ຎ!
15
DOUT/RDY
‫ز‬ႜຕ਍๼‫؜‬/ຕ਍৽Ⴣ๼‫؜‬ᆅগăDOUT/RDYਏᆶມዘፕᆩă໲੗ᅜᆩፕ‫ز‬ႜຕ਍๼‫؜‬ᆅগLjᅜ‫ݡ‬࿚
ADC‫ڦ‬๼‫؜‬ᅎ࿋स٪ഗă๼‫؜‬ᅎ࿋स٪ഗ੗ᅜࡤᆶઠጲඪᅃೌాຕ਍स٪ഗई੦዆स٪ഗ‫ڦ‬ຕ਍ăُ
ྔLjDOUT/RDY੗ᅜᆩፕຕ਍৽Ⴣᆅগă‫ړ‬ᆅগ‫ۉڦ‬ೝྺ‫้گ‬Lj՗๖ገ࣑ᅙྜ‫ׯ‬ăገ࣑ྜ‫ࢫׯ‬Ljසࡕຕ
਍࿄ԥ‫܁‬ൽLj޿ᆅগॽሞူᅃْ߸ႎኮമՎྺߛ‫ۉ‬ೝă
DOUT/RDYူইᄂ੗ᅜᆩፕ‫ت‬૙ഗ‫ڦ‬ዐ܏Lj՗๖٪ሞ੗ᆩຕ਍ă
֑ᆩྔև‫ز‬ႜ้ዓ้Lj੗ᅜ૧ᆩDOUT/RDYᆅগ‫܁‬ൽຕ਍ăCSྺ‫ۉگ‬ೝ้Ljຕ਍/੦዆ጴ႑တሞSCLKူ
ইᄂԥዃᇀDOUT/RDYᆅগฉLj൐ሞSCLKฉืᄂᆶၳă
16
DIN
‫ز‬ႜຕ਍๼෇ă޿‫ز‬ႜຕ਍๼෇ᆩᇀADC‫ڦ‬๼෇ᅎ࿋स٪ഗă޿ᅎ࿋स٪ഗዐ‫ڦ‬ຕ਍‫د‬๼዁ADCా‫ڦ‬੦
዆स٪ഗǗཚ႑स٪ഗ‫ڦ‬स٪ഗ჋ስ࿋੗ᅜ๎՚ട‫ڦړ‬स٪ഗă
Rev. B | Page 10 of 32
AD7792/AD7793
๼‫؜‬ሯำᇑ‫ݴ‬Ր୲ࡀ߭!
ྔևएጚ‫ۉ‬უᇸ!
՗5ߴ‫؜‬କᅃၵ߸ႎ໏୲ࢅሺᅮยዃူ‫ڦ‬AD7792/AD7793
‫ڦ‬๼‫؜‬਩‫ߵݛ‬ሯำă໯༵ࠃ‫ڦ‬ຕ਍๟ኍ‫ܔ‬ມटႠ๼෇‫ྷݔ‬
ᅜत֑ᆩ2.5 Vྔևएጚ‫ۉ‬უᇸܸჾăኄၵຕኵྺ‫ۆ‬႙ኵLj
ׂิ‫ڦ‬ཉॲྺֶ‫ݴ‬๼෇‫ۉ‬უྺ0Vă՗6ࢅ՗7‫ݴ‬՚ଚ‫؜‬କ
AD7793ࢅAD7792‫ڦ‬ᆶၳ‫ݴ‬Ր୲ᅜत๼‫ރރ؜‬ኵ(p-p)‫ݴ‬Ր
୲(ઔࡽా‫ڦ‬ຕጴ)ăՂႷጀᅪLjᆶၳ‫ݴ‬Ր୲๟૧ᆩ਩‫ߵݛ‬
ሯำऺ໙‫؜ڥ‬Ljܸ‫ރރ‬ኵ‫ݴ‬Ր୲ሶ๟ߵ਍‫ރރ‬ኵሯำऺ໙
‫؜ڥ‬ă‫ރރ‬ኵ‫ݴ‬Ր୲՗๖࿮ஓ෻ຮ൧઄ူ‫ݴڦ‬Ր୲ăኄၵ
ຕ਍ྺ‫ۆ‬႙ኵLjᅙ຺ป࿵෇‫ڟ‬ፌথৎ‫ڦ‬LSBă
՗5. AD7792ࢅAD7793‫ڦ‬๼‫؜‬਩‫ߵݛ‬ሯำ(μV)ᇑሺᅮࢅ๼‫߸؜‬ႎ໏୲‫࠲ڦ‬ဣ(֑ᆩ2.5 Vྔևएጚ‫ۉ‬უᇸ)
߸ႎ໏୲(Hz)
4.17
8.33
16.7
33.2
62
123
242
470
ሺᅮ = 1
0.64
1.04
1.55
2.3
2.95
4.89
11.76
11.33
ሺᅮ = 2
0.6
0.96
1.45
2.13
2.85
4.74
9.5
9.44
ሺᅮ = 4
0.29
0.38
0.54
0.74
0.92
1.49
4.02
3.07
ሺᅮ = 8
0.22
0.26
0.36
0.5
0.58
1
1.96
1.79
ሺᅮ = 16
0.1
0.13
0.18
0.23
0.29
0.48
0.88
0.99
ሺᅮ = 32
0.065
0.078
0.11
0.17
0.2
0.32
0.45
0.63
ሺᅮ = 64
0.039
0.057
0.087
0.124
0.153
0.265
0.379
0.568
ሺᅮ = 128
0.041
0.055
0.086
0.118
0.144
0.283
0.397
0.593
ሺᅮ = 64
21 (18.5)
20.5 (18)
20 (17.5)
19 (16.5)
19 (16.5)
18 (15.5)
17.5 (15)
17 (14.5)
ሺᅮ = 128
20 (17.5)
19.5 (17)
19 (16.5)
18.5 (16)
18 (15.5)
17 (14.5)
16.5 (14)
16 (13.5)
ሺᅮ = 64
16 (16)
16 (16)
16 (16)
16 (16)
16 (16)
165 (15.5)
16 (15)
16 (14.5)
ሺᅮ = 128
16 (16)
16 (16)
16 (16)
16 (16)
16 (15.5)
16 (14.5)
16 (14)
15.5 (13.5)
՗6. AD7793‫ۆڦ‬႙‫ݴ‬Ր୲(࿋)ᇑሺᅮࢅ๼‫߸؜‬ႎ໏୲‫࠲ڦ‬ဣ(֑ᆩ2.5 Vྔևएጚ‫ۉ‬უᇸ)
߸ႎ໏୲(Hz)
4.17
8.33
16.7
33.2
62
123
242
470
ሺᅮ = 1
23 (20.5)
22 (19.5)
21.5 (19)
21 (18.5)
20.5 (18)
20 (17.5)
18.5 (16)
18.5 (16)
ሺᅮ = 2
22 (19.5)
21.5 (19)
20.5 (18)
20 (17.5)
19.5 (17)
19 (16.5)
18 (15.5)
18 (15.5)
ሺᅮ = 4
22 (19.5)
21.5 (19)
21 (18.5)
20.5 (18)
20.5 (18)
19.5 (17)
18 (15.5)
18.5 (16)
ሺᅮ = 8
21.5 (19)
21 (18.5)
20.5 (18)
20 (17.5)
20 (17.5)
19 (16.5)
18 (15.5)
18.5 (16)
ሺᅮ = 16
21.5 (19)
21 (18.5)
20.5 (18)
20.5 (18)
20 (17.5)
19.5 (17)
18.5 (16)
18 (15.5)
ሺᅮ = 32
21 (18.5)
21 (18.5)
20.5 (18)
20 (17.5)
19.5 (17)
19 (16.5)
18.5 (16)
18 (15.5)
՗7. AD7792‫ۆڦ‬႙‫ݴ‬Ր୲(࿋)ᇑሺᅮࢅ๼‫߸؜‬ႎ໏୲‫࠲ڦ‬ဣ(֑ᆩ2.5 Vྔևएጚ‫ۉ‬უᇸ)
߸ႎ໏୲(Hz)
4.17
8.33
16.7
33.2
62
123
242
470
ሺᅮ = 1
16 (16)
16 (16)
16 (16)
16 (16)
16 (16)
16 (16)
16 (16)
16 (16)
ሺᅮ = 2
16 (16)
16 (16)
16 (16)
16 (16)
16 (16)
16 (16)
16 (15.5)
16 (15.5)
ሺᅮ = 4
16 (16)
16 (16)
16 (16)
16 (16)
16 (16)
16 (16)
16 (15.5)
16 (16)
ሺᅮ = 8
16 (16)
16 (16)
16 (16)
16 (16)
16 (16)
16 (16)
16 (15.5)
16 (16)
Rev. B | Page 11 of 32
ሺᅮ = 16
16 (16)
16 (16)
16 (16)
16 (16)
16 (16)
16 (16)
16 (16)
16 (15.5)
ሺᅮ = 32
16 (16)
16 (16)
16 (16)
16 (16)
16 (16)
16 (16)
16 (16)
16 (15.5)
AD7792/AD7793
ాևएጚ‫ۉ‬უ!
՗8ߴ‫؜‬କᅃၵ߸ႎ໏୲ࢅሺᅮยዃူ‫ڦ‬AD7792/AD7793
‫ڦ‬๼‫؜‬਩‫ߵݛ‬ሯำă໯༵ࠃ‫ڦ‬ຕ਍ኍ‫ܔ‬ມटႠ๼෇‫ྷݔ‬ᅜ
त֑ᆩ1.17 Vాևएጚ‫ۉ‬უᇸܸჾăኄၵຕኵྺ‫ۆ‬႙ኵLj
ׂิ‫ڦ‬ཉॲྺֶ‫ݴ‬๼෇‫ۉ‬უྺ0Vă՗9ࢅ՗10‫ݴ‬՚ଚ‫؜‬କ
AD7793ࢅAD7792‫ڦ‬ᆶၳ‫ݴ‬Ր୲ᅜत๼‫ރރ؜‬ኵ(p-p)‫ݴ‬Ր
୲(ઔࡽా‫ڦ‬ຕጴ)ăՂႷጀᅪLjᆶၳ‫ݴ‬Ր୲ߵ਍਩‫ߵݛ‬ሯ
ำऺ໙‫؜ڥ‬Ljܸ‫ރރ‬ኵ‫ݴ‬Ր୲ሶ๟ߵ਍‫ރރ‬ኵሯำऺ໙‫ڥ‬
‫؜‬ă‫ރރ‬ኵ‫ݴ‬Ր୲՗๖࿮ஓ෻ຮ൧઄ူ‫ݴڦ‬Ր୲ăኄၵຕ
਍ྺ‫ۆ‬႙ኵLjᅙ຺ป࿵෇‫ڟ‬ፌথৎ‫ڦ‬LSBă
՗8. AD7792ࢅAD7793‫ڦ‬๼‫؜‬਩‫ߵݛ‬ሯำ(μV)ᇑሺᅮࢅ๼‫߸؜‬ႎ໏୲‫࠲ڦ‬ဣDŽ֑ᆩాևएጚ‫ۉ‬უᇸDž
߸ႎ໏୲(Hz)
4.17
8.33
16.7
33.2
62
123
242
470
ሺᅮ = 1
0.81
1.18
1.96
2.99
3.6
5.83
11.22
12.46
ሺᅮ = 2
0.67
1.11
1.72
2.48
3.25
5.01
8.64
10.58
ሺᅮ = 4
0.32
0.41
0.55
0.83
1.03
1.69
2.69
4.58
ሺᅮ = 8
0.2
0.25
0.36
0.48
0.65
0.96
1.9
2
ሺᅮ = 16
0.13
0.16
0.25
0.33
0.46
0.67
1.04
1.27
ሺᅮ = 32
0.065
0.078
0.11
0.17
0.2
0.32
0.45
0.63
ሺᅮ = 64
0.04
0.058
0.088
0.13
0.15
0.25
0.35
0.50
ሺᅮ = 128
0.039
0.059
0.088
0.12
0.15
0.26
0.34
0.49
ሺᅮ = 64
20 (17.5)
19 (16.5)
18.5 (16)
18 (15.5)
18 (15.5)
17 (14.5)
16.5 (14)
16 (13.5)
ሺᅮ = 128
19 (16.5)
18 (15.5)
17.5 (15)
17 (14.5)
17 (14.5)
16 (13.5)
15.5 (13)
15 (12.5)
ሺᅮ = 64
16 (16)
16 (16)
16 (16)
16 (15.5)
16 (15.5)
16 (14.5)
16 (14)
15.5 (13.5)
ሺᅮ = 128
16 (16)
16 (15.5)
16 (15)
16 (14.5)
16 (14.5)
15.5 (13.5)
15 (13)
14.5 (12.5)
՗9. AD7793‫ڦ‬ᆶၳ‫ݴ‬Ր୲DŽ࿋Džᇑሺᅮࢅ๼‫߸؜‬ႎ໏୲‫࠲ڦ‬ဣDŽ֑ᆩాևएጚ‫ۉ‬უᇸDž
߸ႎ໏୲(Hz)
4.17
8.33
16.7
33.2
62
123
242
470
ሺᅮ = 1
21.5 (19)
21 (18.5)
20 (17.5)
19.5 (17)
19.5 (17)
18.5 (16)
17.5 (15)
17.5 (15)
ሺᅮ = 2
20.5 (18)
20 (17.5)
19.5 (17)
19 (16.5)
18.5 (16)
18 (15.5)
17 (14.5)
17 (14.5)
ሺᅮ = 4
21 (18.5)
20.5 (18)
20 (17.5)
19.5 (17)
19 (16.5)
18.5 (16)
17.5 (15)
17 (14.5)
ሺᅮ = 8
20.5 (18)
20 (17.5)
19.5 (17)
19 (16.5)
19 (16.5)
18 (15.5)
17 (14.5)
17 (14.5)
ሺᅮ = 16
20 (17.5)
20 (17.5)
19 (16.5)
19 (16.5)
18.5 (16)
17.5 (15)
17 (14.5)
17 (14.5)
ሺᅮ = 32
20 (17.5)
20 (17.5)
19.5 (17)
18.5 (16)
18.5 (16)
18 (15.5)
17.5 (15)
17 (14.5)
՗10. AD7792‫ڦ‬ᆶၳ‫ݴ‬Ր୲DŽ࿋Džᇑሺᅮࢅ๼‫߸؜‬ႎ໏୲‫࠲ڦ‬ဣDŽ֑ᆩాևएጚ‫ۉ‬უᇸDž
߸ႎ໏୲(Hz)
4.17
8.33
16.7
33.2
62
123
242
470
ሺᅮ = 1
16 (16)
16 (16)
16 (16)
16 (16)
16 (16)
16 (16)
16 (15)
16 (15)
ሺᅮ = 2
16 (16)
16 (16)
16 (16)
16 (16)
16 (16)
16 (15.5)
16 (14.5)
16 (14.5)
ሺᅮ = 4
16 (16)
16 (16)
16 (16)
16 (16)
16 (16)
16 (16)
16 (15)
16 (14.5)
ሺᅮ = 8
16 (16)
16 (16)
16 (16)
16 (16)
16 (16)
16 (15.5)
16 (14.5)
16 (14.5)
Rev. B | Page 12 of 32
ሺᅮ = 16
16 (16)
16 (16)
16 (16)
16 (16)
16 (16)
16 (15)
16 (14.5)
16 (14.5)
ሺᅮ = 32
16 (16)
16 (16)
16 (16)
16 (16)
16 (16)
16 (15.5)
16 (15)
16 (14.5)
AD7792/AD7793
‫ۆ‬႙߾ፕ༬Ⴀ!
8388800
8388750
20
CODE READ
OCCURRENCE (%)
8388700
8388650
8388600
10
8388450
04855-006
8388500
0
200
400
600
800
0
1000
04855-009
8388550
–1.75 –1.05 –0.70 –0.35
READING NUMBER
16
90
14
80
0.70
1.05
1.40
1.75
70
POWER-UP TIME (ms)
12
10
8
6
4
60
50
40
30
20
04855-007
2
0
8388482
8388520
8388560
8388600
8388640
8388680
04855-010
OCCURRENCE
0.35
཮9. ࣍ৣ࿒‫ူ܈‬घ૤‫ୁۉ‬೅ದ(1 mA)
཮6. AD7793‫ۆڦ‬႙ሯำ཮
(ాևएጚ‫ۉ‬უLjሺᅮ = 64Lj߸ႎ໏୲ = 16.7 Hz)
10
0
8388720 8388750
CODE
0
200
400
600
800
1000
LOAD CAPACITANCE (nF)
཮7. AD7793‫ڦ‬ሯำ‫ݴ‬ք኱‫཮ݛ‬
)ాևएጚ‫ۉ‬უLjሺᅮ = 64Lj߸ႎ໏୲ = 16.7 Hz*
཮10. ೋዃ‫ۉ‬უ݀ิഗฉ‫้ۉ‬क़ᇑ޶ሜ‫ۉ‬ඹ‫࠲ڦ‬ဣ
3.0
VDD = 5V
UPDATE RATE = 16.6Hz
TA = 25°C
2.5
20
RMS NOISE (μV)
2.0
1.5
10
1.0
0
–2.0
–1.2
–0.8
–0.4
0
0.4
0.8
1.2
1.6
2.0
MATCHING (%)
0
04855-011
0.5
04855-008
OCCURRENCE (%)
0
MATCHING (%)
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
REFERENCE VOLTAGE (V)
཮8. ࣍ৣ࿒‫ူ܈‬घ૤‫ୁۉ‬೅ದ(210 μA)
཮11 ਩‫ߵݛ‬ሯำᇑएጚ‫ۉ‬უ‫࠲ڦ‬ဣ(ሺᅮ = 1)
Rev. B | Page 13 of 32
5.0
AD7792/AD7793
ೌాस٪ഗ!
ADCᆯႹ‫ాೌܠ‬स٪ഗ৊ႜ੦዆ࢅದዃLjူ௬‫ڦ‬ቤবॽ‫ܔ‬
ኄၵस٪ഗ৊ႜၘဦ‫ڦ‬ຫ௽ăሞူ௬‫ڦ‬௮ຎዐLjස࿮༬๺
ຫ௽Lj“ዃ1”՗๖இड1ጒༀLj“ൣ0”՗๖இड0ጒༀă
ཚ႑स٪ഗ
RS2, RS1, RS0 = 0, 0, 0
ཚ႑स٪ഗ๟ᅃ߲8࿋ኻႀस٪ഗăᇑADCഗॲኮक़‫ڦ‬໯
ᆶཚ႑਩ՂႷᅜ‫ܔ‬ཚ႑स٪ഗ‫ڦ‬ႀ֡ፕਸ๔ăႀ෇ཚ႑स
٪ഗ‫ڦ‬ຕ਍ਦۨକူᅃ߲֡ፕ๟‫֡܁‬ፕ࣏๟ႀ֡ፕLjᅜत
ُ֡ፕ‫֡ڦ‬ፕ‫ܔ‬ၡ๟నᅃ߲स٪ഗă‫ܔ‬ᇀ‫܁‬/ႀ֡ፕLj‫ܔړ‬
CR7
WEN(0)
CR6
R/W(0)
CR5
RS2(0)
CR4
RS1(0)
჋ۨस٪ഗ‫܁ڦ‬/ႀ֡ፕྜ‫ࢫׯ‬Ljথ੨‫ܔڟ࣮ݓ‬ཚ႑स٪ഗ
ኴႜႀ֡ፕ‫ڦ‬ጒༀăኄ๟থ੨‫ڦ‬ఐණጒༀLjሞฉ‫ۉ‬ईް࿋
ࢫLjADCॽ‫ت‬ᇀُఐණጒༀLj‫ܔځڪ‬ཚ႑स٪ഗ‫ڦ‬ႀ֡
ፕă‫ړ‬থ੨้Ⴞ۪฿ኮࢫLjኴႜᅃ߲቞ᆩ዁ณ32߲‫ز‬ႜ้
ዓዜ೺‫ڦ‬ႀ֡ፕLjժ๑DIN‫ت‬ᇀߛ‫ۉ‬ೝጒༀLjॽ੗ᅜް࿋
ኝ߲ഗॲLjܸٗඟADC‫ُ࣮ݓ‬ఐණጒༀă՗11ଚ‫؜‬କཚ႑
स٪ഗ࿋ࠀీ௮ຎăCR0዁CR7՗๖࿋‫ڦ‬࿋ዃLjCRຫ௽ኄ
ၵ࿋ຌᇀཚ႑स٪ഗăCR7՗๖ຕ਍ୁ‫ڼڦ‬ᅃ࿋ăઔࡽዐ
‫ڦ‬ຕኵ՗๖޿࿋‫ڦ‬ฉ‫ۉ‬/ް࿋ఐණጒༀă
CR3
RS0(0)
CR2
CREAD(0)
CR1
0(0)
CR0
0(0)
՗11. ཚ႑स٪ഗ࿋ࠀీ௮ຎ
࿋࿋ዃ
CR7
࿋ఁ‫׬‬
WEN
௮ຎ
ႀ෇๑ీ࿋ăॽ0ႀ෇ُ࿋ࢫLj‫ܔ‬ཚ႑स٪ഗ‫ڦ‬ႀ֡ፕ֍ᆶၳăසࡕ‫ڼ‬ᅃ࿋ႀ෇1Ljሶഗॲփࣷॽໜࢫ‫ڦ‬
࿋ሜ෇स٪ഗLj໲ॽཕାሞُ࿋‫ڦ‬࿋ዃLj኱‫ُڟ‬࿋ႀ෇0ăᅃ‫ॽڋ‬0ႀ෇WER࿋LjഗॲՍࣷॽࢫჄ7࿋ຕ਍
ሜ෇ཚ႑स٪ഗă
CR6
R/W
CR5 to CR3
CR2
RS2 to
RS0
CREAD
සࡕُ࿋ྺ0Ljሶ՗๖ူᅃ߲֡ፕ๟‫ܔ‬ኸۨस٪ഗኴႜႀ֡ፕăසࡕُ࿋ྺ1Ljሶ՗๖ူᅃ߲֡ፕ๟‫ܔ‬ኸ
ۨस٪ഗኴႜ‫֡܁‬ፕă
स٪ഗ‫ں‬኷࿋ăኄၵ‫ں‬኷࿋ਦۨሞ‫ز‬ႜথ੨ཚ႑೺क़჋ስADC‫ڦ‬నၵस٪ഗă֖९՗12ă
CR1 to CR0
0
૶Ⴤ‫܁‬ൽຕ਍स٪ഗă‫޿ړ‬࿋ԥዃྺ1(൐ຕጴस٪ഗᅙ჋)Lj‫ز‬ႜথ੨੗ᅜ૶Ⴤٗຕ਍स٪ഗా‫܁‬ൽຕ
਍ă૩සLj‫ړ‬RDYᆅগՎྺ‫ۉگ‬ೝᅜ༵๖ገ࣑ྜ‫ࢫׯ‬LjሞSCLKஞ؋แेᇀADC้Ljຕ਍स٪ഗ‫ాڦ‬ඹጲ‫ۯ‬
ዃᇀDOUTᆅগฉă‫ܔ‬ᇀࢫჄຕ਍‫܁‬ൽLjփՂ‫ܔ‬ཚ႑स٪ഗኴႜႀ֡ፕăᄲ๑ీ૶Ⴤ‫܁‬ൽఇ๕LjՂႷॽኸ
ସ01011100ႀ෇ཚ႑स٪ഗăැᄲཽ‫૶؜‬Ⴤ‫܁‬ൽఇ๕LjՂႷሞRDYᆅগྺ‫ۉگ‬ೝ้ॽኸସ01011000ႀ෇
ཚ႑स٪ഗăሞ૶Ⴤ‫܁‬ൽఇ๕ူLjADCࣷ॔੦DIN၍ୟฉ‫ڦ‬ऄ‫ۯ‬LjᅜՍీথ๭ኸସཽܸٗ‫૶؜‬Ⴤ‫܁‬ൽఇ
๕ăُྔLjසࡕDINฉ૶Ⴤ‫؜‬၄32߲1LjADCॽް࿋ăᅺُLjሞ૶Ⴤ‫܁‬ൽఇ๕ူLjሞᆶኸସႀ෇ഗॲമLj
DINᆌԍ‫ۉگ׼‬ೝă
ՂႷॽኄၵ࿋Պ‫ྺײ‬இड1֍ీኟ‫߾׉‬ፕă!
՗12. स٪ഗ჋ስ
RS2
0
0
0
0
0
1
1
1
1
RS1
0
0
0
1
1
0
0
1
1
RS0
0
0
1
0
1
0
1
0
1
स٪ഗ
स٪ഗ‫ٷ‬ၭ!!
ႀ֡ፕ೺क़ྺཚ႑स٪ഗ
‫֡܁‬ፕ೺क़ྺጒༀस٪ഗ
ఇ๕स٪ഗ
ದዃस٪ഗ
ຕ਍स٪ഗ
IDस٪ഗ
IOस٪ഗ
฿ۙस٪ഗ
஢ଉ‫ײ‬स٪ഗ
ႀ֡ፕ೺क़ྺཚ႑स٪ഗ
‫֡܁‬ፕ೺क़ྺጒༀस٪ഗ
ఇ๕स٪ഗ
ದዃस٪ഗ
ຕ਍स٪ഗ
IDस٪ഗ
IOस٪ഗ
฿ۙस٪ഗ
஢ଉ‫ײ‬स٪ഗ
Rev. B | Page 14 of 32
AD7792/AD7793
ጒༀस٪ഗ
RS2, RS1, RS0 = 0, 0, 0Ǘฉ‫ۉ‬/ް࿋ = 0x80 (AD7792)/0x88 (AD7793)
ጒༀस٪ഗ๟ᅃ߲8࿋ኻ‫܁‬स٪ഗăᄲ‫ݡ‬࿚ADCጒༀस٪ഗLjᆩࢽՂႷ‫ܔ‬ཚ႑स٪ഗ৊ႜႀ֡ፕLj჋ስူᅃ߲֡ፕྺ‫֡܁‬ፕLj
ժॽ0ሜ෇࿋RS2Ă࿋RS1ࢅ࿋RS0Lj՗13ଚ‫؜‬କጒༀस٪ഗ࿋ࠀీ௮ຎăSR0዁SR7՗๖࿋‫ڦ‬࿋ዃLjSRຫ௽ኄၵ࿋ຌᇀጒༀस٪
ഗăSR7՗๖ຕ਍ୁ‫ڼڦ‬ᅃ࿋ăઔࡽዐ‫ڦ‬ຕኵ՗๖޿࿋‫ڦ‬ฉ‫ۉ‬/ް࿋ఐණጒༀă
SR7
RDY(1)
SR6
ERR(0)
SR5
0(0)
SR4
0(0)
SR3
0/1
SR2
CH2(0)
SR1
CH1(0)
SR0
CH0(0)
՗13. ጒༀस٪ഗ࿋ࠀీ௮ຎ
࿋ఁ‫׬‬
SR7
࿋ఁ‫׬‬
RDY
SR6
ERR
SR5 ዁ SR4
SR3
SR2 ዁ SR0
0
0/1
CH2 ዁ CH0
௮ຎ
ADC৽Ⴣ࿋ă‫ړ‬ຕ਍ႀ෇ADCຕ਍स٪ഗࢫLj޿࿋ൣ0ă‫܁‬ൽADCຕ਍स٪ഗኮࢫLjईኁሞᆩႎገ࣑঳
ࡕ߸ႎຕ਍स٪ഗኮമ‫ڦ‬ᅃ܎้क़ాLjRDY࿋ጲ‫ۯ‬ዃ1Ljᅜߢኪᆩࢽփᆌ‫܁‬ൽገ࣑ຕ਍ă‫ړ‬ഗॲሞู‫ۉ‬
ఇ๕ူ้Lj޿࿋ᄺྺ1ăDOUT/RDYᆅগᄺࣷኸ๖ገ࣑ࢆ้঳ຐă޿ᆅগ੗ᅜ‫༺پ‬ጒༀस٪ഗઠ॔๫
ADCᆶ࿮ገ࣑ຕ਍ă
ADC‫ٱ‬ဃ࿋ăُ࿋ᇑ ࿋ཞ้ႀ෇ă޿࿋ྺ1ຫ௽ႀ෇ADCຕ਍स٪ഗ‫ڦ‬঳ࡕᶏ࿋ྺඇ0ईඇ1ă‫ڞ‬ዂ‫ٱ؜‬
‫ڦ‬ᇱᅺྺ‫ג‬ଉ‫ࢅײ‬വଉ‫ײ‬ă
ഔ‫ۯ‬ገ࣑‫ڦ‬ႀ֡ፕ੗ॽ޿࿋ൣ0ă
ኄၵ࿋ጲ‫ۯ‬ൣ0ă
‫ܔ‬ᇀAD7792Ljُ࿋ጲ‫ۯ‬ൣ0Ǘ‫ܔ‬ᇀAD7793Ljُ࿋ጲ‫ۯ‬ዃ1ă
ኄၵ࿋՗๖ADCኟሞ‫ܔ‬నᅃཚ‫ڢ‬ኴႜገ࣑֡ፕă
ఇ๕स٪ഗ
RS2, RS1, RS0 = 0, 0, 1Ǘฉ‫ۉ‬/ް࿋ = 0x000A
ఇ๕स٪ഗྺᅃ16࿋स٪ഗLj੗ᅜ‫܁‬ൽࢅႀ෇ຕ਍ă޿स٪ഗᆩᇀ჋ስሏႜఇ๕Ă߸ႎ໏୲ࢅ้ዓᇸă՗14ଚ‫؜‬କఇ๕स٪
ഗ࿋ࠀీ௮ຎăMR0዁MR15՗๖࿋‫ڦ‬࿋ዃLjMRຫ௽ኄၵ࿋ຌᇀఇ๕स٪ഗăMR15՗๖ຕ਍ୁ‫ڼڦ‬ᅃ࿋ăઔࡽዐ‫ڦ‬ຕኵ՗๖
޿࿋‫ڦ‬ฉ‫ۉ‬/ް࿋ఐණጒༀăኻᄲ‫ܔ‬ยዃस٪ഗኴႜႀ֡ፕLj৽ࣷް࿋ۙ዆ഗࢅ୳հഗLjժॽ ࿋ዃ1ă
MR15
MD2(0)
MR7
CLK1(0)
MR14
MD1(0)
MR6
CLK0(0)
MR13
MD0(0)
MR5
0(0)
MR12
0(0)
MR4
0(0)
MR11
0(0)
MR3
FS3(1)
MR10
0(0)
MR2
FS2(0)
MR9
0(0)
MR1
FS1(1)
MR8
0(0)
MR0
FS0(0)
՗14. ఇ๕स٪ഗ࿋ࠀీ௮ຎ
࿋࿋ዃ
MR15 ዁
MR13
MR12 ዁ MR8
MR7 ዁ MR6
࿋ఁ‫׬‬
MD2 ዁
MD0
0
CLK1 ዁
CLK0
௮ຎ
ఇ๕჋ስ࿋ăኄၵ࿋჋ስAD7792/AD7793‫߾ڦ‬ፕఇ๕DŽ֖९՗15Džă
ՂႷॽኄၵ࿋Պ‫ྺײ‬இड0֍ీኟ‫߾׉‬ፕă
ኄၵ࿋ᆩઠ჋ስAD7792/AD7793‫้ڦ‬ዓᇸă੗ᅜ๑ᆩೌా64 kHz้ዓईྔև้ዓă঺ዺྔև้ዓํ၄
ޮ ႀ Lj ੗ ԍ ኤ ‫ ߲ ܠ‬AD7792/AD7793ഗ ॲ ኮ क़ ‫ ڦ‬ཞ օ ă ُ ྔ Lj ‫ ֑ ړ‬ᆩ ৛ ඓ ‫ ྔ ڦ‬և ้ ዓ ൻ ‫ۯ‬
AD7792/AD7793้Lj੗ᅜ߀฀50 Hz/60 Hzᅞ዆Ⴀీă
CLK1
0
0
1
MR5 ዁ MR4
MR3 ዁ MR0
0
FS3 ዁ FS0
CLK0
0
1
0
ADC Clock Source
64 kHzాև้ዓăCLKᆅগփ༵ࠃాև้ዓă
64 kHzాև้ዓăCLKᆅগ༵ࠃُాև้ዓă
64 kHzྔև้ዓăྔև้ዓ੗ᅜ߀฀50 Hz/60 Hzᅞ዆Ⴀీă֖९ྔև้ዓ‫߭ࡀڦ‬ă
໯჋ྔև้ዓăྔև้ዓሞAD7792/AD7793ాԥ2‫ݴ‬ೕă
1
1
ՂႷॽኄၵ࿋Պ‫ྺײ‬இड0֍ీኟ‫߾׉‬ፕă
୳հഗ߸ႎ໏୲჋ስ࿋(֖९՗16)ă
Rev. B | Page 15 of 32
AD7792/AD7793
՗15. ߾ፕఇ๕
MD2
0
MD1
0
MD0
0
ఇ๕
૶Ⴤገ࣑ఇ๕)ఐණ*ă
ሞ૶Ⴤገ࣑ఇ๕ူLjADC૶Ⴤኴႜገ࣑֡ፕժॽ঳ࡕዃᇀຕ਍स٪ഗዐă‫ړ‬ገ࣑ྜ‫ࢫׯ‬LjRDYՎྺ‫ۉگ‬ೝăॽ
ഗॲዃᇀ૶Ⴤ‫܁‬ൽఇ๕ူኮࢫLjᆩࢽ੗ᅜ‫܁‬ൽኄၵገ࣑঳ࡕǗ‫ړ‬แेSCLKஞ؋้Ljገ࣑঳ࡕጲ‫ۯ‬ዃᇀDOUT၍
ୟฉăଷᅃ‫ݛ‬௬Ljᆩࢽ੗ᅜཚࡗ‫ܔ‬ཚ႑स٪ഗ৊ႜႀ֡ፕLjኸ๖ADC๼‫؜‬ገ࣑঳ࡕăฉ‫ࢫۉ‬Ljසཚ‫ิׂڢ‬Վࣅ
ई‫ܔ‬ఇ๕स٪ഗĂದዃस٪ഗईIOस٪ഗ৊ႜᅃْႀ֡ፕࢫLj‫ڼ‬ᅃْገ࣑֡ፕॽሞ2/fADCዜ೺ࢫ৊ႜăሞfADC
ೕ୲ူLj੗ᅜྜ‫૶ׯ‬Ⴤገ࣑ă
0
0
1
‫ْڇ‬ገ࣑ఇ๕ă
჋ስ‫ْڇ‬ገ࣑ఇ๕ኮࢫLjADCฉ‫ۉ‬ժኴႜ‫ْڇ‬ገ࣑ăና‫ږ‬ഗฉ‫ॺࢅۉ‬૬Ⴔᄲ1 msă඗ࢫLjADCኴႜገ࣑֡ፕLj
ገ࣑֡ፕႴᄲࢾ‫้ڦݯ‬क़ྺ2/fADCăገ࣑঳ࡕԥԍ٪ሞຕ਍स٪ഗዐLjRDYՎྺ‫ۉگ‬ೝLj඗ࢫADC‫ۉู࣮ݓ‬ఇ
๕ăሞຕ਍ԥ‫܁‬ൽईኴႜႎᅃْገ࣑ኮമLj‫ړ‬മ‫ڦ‬ገ࣑঳ࡕॽᅃ኱ԥԍ٪ሞຕ਍स٪ഗዐLjժ൐ ԍ‫׼‬ሞ‫ۉگ‬
ೝጒༀă
0
1
0
0
1
1
1
0
0
੣ှఇ๕ă
ሞ੣ှఇ๕ူLjADC୳հഗࢅۙ዆ഗԍ‫׼‬ሞް࿋ጒༀLj‫ڍ‬ධ඗༵ࠃۙ዆ഗ้ዓă
ู‫ۉ‬ఇ๕ă
ሞู‫ۉ‬ఇ๕ူLjAD7792/AD7793‫ڦ‬໯ᆶ‫ۉ‬ୟDŽԈઔ‫ୁۉ‬ᇸĂභ܏‫ୁۉ‬Ăೋዃ‫ۉ‬უ݀ิഗࢅCLKOUTDž਩‫ت‬ᇀ࠲
Կጒༀă
ాևଭ‫ۉ‬ೝၯጚă
ాև‫܌‬ୟጲ‫૶ۯ‬থ‫ڟ‬๑ీ‫ڦ‬ཚ‫ڢ‬ăၯጚ֡ፕႴᄲࢾ‫ݯ‬ଇ߲ገ࣑ዜ೺ă‫ړ‬ၯጚഔ‫ࢫۯ‬LjRDYՎྺߛ‫ۉ‬ೝǗ‫ړ‬ၯጚ
֡ፕྜ‫ࢫׯ‬LjRDY࣬ްྺ‫ۉگ‬ೝጒༀăၯጚ֡ፕྜ‫ࢫׯ‬LjADC‫ت‬ᇀ੣ှఇ๕ă֪‫ڦڥ‬฿ۙဣຕԍ٪ሞ໯჋ཚ‫ڢ‬
‫ڦ‬฿ۙस٪ഗዐă
1
0
1
ాև஢ଉ‫ײ‬ၯጚă
‫ܔ‬ᇀ޿ၯጚLj஢ଉ‫ײ‬๼෇‫ۉ‬უࣷጲ‫૶ۯ‬থ‫ڟ‬჋ۨ‫ڦ‬ఇె๼෇ă
‫ړ‬ሺᅮྺ1้Ljྜ‫ׯ‬ၯጚႴᄲ2߲ገ࣑ዜ೺ă‫ܔ‬ᇀ߸ߛሺᅮLjኴႜ஢ଉ‫ײ‬ၯጚႴᄲ຺߲ገ࣑ዜ೺ă
‫ړ‬ၯጚഔ‫ࢫۯ‬LjRDYՎྺߛ‫ۉ‬ೝǗ‫ړ‬ၯጚ֡ፕྜ‫ࢫׯ‬LjRDY࣬ްྺ‫ۉگ‬ೝጒༀăၯጚ֡ፕྜ‫ࢫׯ‬LjADC‫ت‬ᇀ੣
ှఇ๕ă֪‫ڦڥ‬஢ଉ‫ײ‬ဣຕԍ٪ሞ໯჋ཚ‫ڦڢ‬஢ଉ‫ײ‬स٪ഗዐă
‫ړ‬ሺᅮྺ128้LjփሎႹኴႜాև஢ଉ‫ײ‬ၯጚLj‫ڍ‬ሎႹኴႜဣཥ஢ଉ‫ײ‬ၯጚă
௅ْ߸߀ᅃ߲ཚ‫ڦڢ‬ሺᅮ้Lj‫ۼ‬Ⴔᄲኴႜ஢ଉ‫ײ‬ၯጚLjᅜՍॽ஢ଉ‫ײ‬ဃֶই዁ፌၭă
1
1
0
ဣཥଭ‫ۉ‬ೝၯጚă
ᆩࢽᆌॽဣཥଭ‫ۉ‬ೝ๼෇૶থ‫ڟ‬ᆯCH2࿋዁CH0࿋‫ڦ‬ኵ໯ਦۨ‫ڦ‬ཚ‫ڢ‬๼෇ᆅগăᅃ߲ဣཥ฿ۙၯጚႴᄲࢾ‫ݯ‬ଇ
߲ገ࣑ዜ೺ă‫ړ‬ၯጚഔ‫ࢫۯ‬LjRDYՎྺߛ‫ۉ‬ೝǗ‫ړ‬ၯጚ֡ፕྜ‫ࢫׯ‬LjRDY࣬ްྺ‫ۉگ‬ೝጒༀăၯጚ֡ፕྜ‫ׯ‬
ࢫLjADC‫ت‬ᇀ੣ှఇ๕ă֪‫ڦڥ‬฿ۙဣຕԍ٪ሞ໯჋ཚ‫ڦڢ‬฿ۙस٪ഗዐă
1
1
1
ဣཥ஢ଉ‫ײ‬ၯጚă
ᆩࢽᆌॽဣཥ஢ଉ‫ײ‬๼෇૶থ‫ڟ‬ᆯCH2࿋዁CH0࿋‫ڦ‬ኵ໯ਦۨ‫ڦ‬ཚ‫ڢ‬๼෇ᆅগăၯጚ֡ፕႴᄲࢾ‫ݯ‬ଇ߲ገ࣑ዜ
೺ă‫ړ‬ၯጚഔ‫ࢫۯ‬LjRDYՎྺߛ‫ۉ‬ೝǗ‫ړ‬ၯጚ֡ፕྜ‫ࢫׯ‬LjRDY࣬ްྺ‫ۉگ‬ೝጒༀăၯጚ֡ፕྜ‫ࢫׯ‬LjADC‫ت‬
ᇀ੣ှఇ๕ă֪‫ڦڥ‬஢ଉ‫ײ‬ဣຕԍ٪ሞ໯჋ཚ‫ڦڢ‬஢ଉ‫ײ‬स٪ഗዐă
௅ْ߸߀ᅃ߲ཚ‫ڦڢ‬ሺᅮ้Lj‫ۼ‬Ⴔᄲኴႜ஢ଉ‫ײ‬ၯጚă
՗16. ੗ᆩ߸ႎ໏୲
FS3
0
0
0
0
0
0
0
0
1
FS2
0
0
0
0
1
1
1
1
0
FS1
0
0
1
1
0
0
1
1
0
FS0
0
1
0
1
0
1
0
1
0
fADC (Hz)
x
470
242
123
62
50
39
33.2
19.6
tSETTLE (ms)
x
4
8
16
32
40
48
60
101
50 Hz/60 Hzᅞ዆(ాև้ዓ)
90 dB)ৈ60 Hz*
Rev. B | Page 16 of 32
AD7792/AD7793
FS3
1
1
1
1
1
1
1
FS2
0
0
0
1
1
1
1
FS1
0
1
1
0
0
1
1
FS0
1
0
1
0
1
0
1
fADC (Hz)
16.7
16.7
12.5
10
8.33
6.25
4.17
tSETTLE (ms)
120
120
160
200
240
320
480
50 Hz/60 Hzᅞ዆DŽాև้ዓDž
80 dB)ৈ50 HzDž
65 dB )50 HzĂ60 Hz*
66 dB )50 HzĂ60 Hz*
69 dB )50 HzĂ60 Hz*
70 dB )50 HzĂ60 Hz*
72 dB )50 HzĂ60 Hz*
74 dB )50 HzĂ60 Hz*
ದዃस٪ഗ
RS2, RS1, RS0 = 0, 1, 0Ǘฉ‫ۉ‬/ް࿋ = 0x0710
ದዃस٪ഗ๟ᅃ߲16࿋स٪ഗLj੗ᅜ‫܁‬ൽࢅႀ෇ຕ਍ă޿स٪ഗᆩઠದዃADC‫ڇڦ‬टႠईມटႠఇ๕Ă๑ీई্ᆩ࣐؋ഗĂ
๑ీई্ᆩභ܏‫ୁۉ‬Ă჋ስሺᅮᅜत჋ስఇె๼෇ཚ‫ڢ‬ă՗17ଚ‫؜‬କದዃस٪ഗ࿋ࠀీ௮ຎăCON0዁CON15՗๖࿋‫ڦ‬࿋ዃLj
CONຫ௽ኄၵ࿋ຌᇀದዃस٪ഗăCON15՗๖ຕ਍ୁ‫ڼڦ‬ᅃ࿋ăઔࡽዐ‫ڦ‬ຕኵ՗๖޿࿋‫ڦ‬ฉ‫ۉ‬/ް࿋ఐණጒༀă
CON15
VBIAS1(0)
CON14
VBIAS0(0)
CON13
BO(0)
CON12
U/B(0)
CON11
BOOST(0)
CON10
G2(1)
CON9
G1(1)
CON8
G0(1)
CON7
REFSEL(0)
CON6
0(0)
CON5
0(0)
CON4
BUF(1)
CON3
0(0)
CON2
CH2(0)
CON1
CH1(0)
CON0
CH0(0)
՗17. ದዃस٪ഗ࿋ࠀీ௮ຎ
࿋࿋ዃ
CON15 ዁
CON14
࿋ఁ‫׬‬
VBIAS1 ዁
VBIAS0
௮ຎ
ೋዃ‫ۉ‬უ݀ิഗ๑ీăఇె๼෇‫ڦ܋޶ڦ‬ፌ‫ٷ‬ೋዃ‫ۉ‬უ੗‫ٳ‬AVDD/2ăኄၵ࿋ᆌᇑืუ࿋ᅃഐ๑ᆩă
VBIAS1
0
0
1
VBIAS0
0
1
0
ೋዃ‫ۉ‬უ
ೋዃ‫ۉ‬უ݀ิഗ্ᆩ
ೋዃ‫ۉ‬უ૶থ዁AIN1(−)
ೋዃ‫ۉ‬უ૶থ዁AIN2(−)
ԍା
1
1
භ܏‫ୁۉ‬๑ీ࿋ăᆩࢽॽ޿࿋ዃ1Lj੗๑ీ႑ࡽୟ০ዐ‫ڦ‬100 nA‫ୁۉ‬ᇸăBO = 0ॽ্ᆩභ܏‫ୁۉ‬ăৈ‫࣐ړ‬
؋ഗईᅏ՗‫ٷݣ‬ഗ‫ت‬ᇀᆶၳጒༀ้Lj֍ీ๑ీභ܏‫ୁۉ‬ă
CON13
BO
CON12
U/B
ມटႠ/‫ڇ‬टႠ࿋ăᆩࢽॽ޿࿋ዃ1Ljॽ๑ీ‫ڇ‬टႠՊஓLjनଭֶ‫ݴ‬๼෇ׂิ0x000000๼‫؜‬Lj஢ଉ‫ݴֶײ‬
๼෇ׂิ0xFFFFFF๼‫؜‬ăᆩࢽൣ0ॽ๑ీມटႠՊஓă޶஢ଉ‫ݴֶײ‬๼෇ׂิ‫ڦ‬๼‫؜‬ஓྺ0x000000Ljଭ
ֶ‫ݴ‬๼෇ׂิ‫ڦ‬๼‫؜‬ஓྺ0x800000Ljኟ஢ଉ‫ݴֶײ‬๼෇ׂิ‫ڦ‬๼‫؜‬ஓྺ0xFFFFFFă
CON11
BOOST
CON10 ዁
CON8
G2 ዁ G0
ُ࿋ᆌᇑVBIAS1࿋ࢅVBIAS0࿋ᅃཞ๑ᆩăዃ1้Ljೋዃ‫ۉ‬უ݀ิഗ‫ߛ༵ࡼࠀڦ‬Ljฉ‫้ۉ‬क़໫‫܌‬ă
ሺᅮ჋ስ࿋ă
ᆯᆩࢽႀ෇Ljᅜ჋ስူଚADC๼෇‫ྷݔ‬ኮᅃǖ
G2
0
0
0
0
1
1
1
1
G1
0
0
1
1
0
0
1
1
G0
0
1
0
1
0
1
0
1
Gain
1 (࿄๑ᆩᅏ՗‫ٷݣ‬ഗ)
2 (࿄๑ᆩᅏ՗‫ٷݣ‬ഗ)
4
8
16
32
64
128
Rev. B | Page 17 of 32
ADC๼෇‫ྷݔ‬DŽ2.5 Vएጚ‫ۉ‬უDž
2.5 V
1.25 V
625 mV
312.5 mV
156.2 mV
78.125 mV
39.06 mV
19.53 mV
AD7792/AD7793
࿋࿋ዃ!
CON7
࿋࿋ዃ!
REFSEL
௮ຎ
एጚ‫ۉ‬უ჋ስ࿋ăኄၵ࿋ᆩઠ჋ስADC‫ڦ‬एጚ‫ۉ‬უᇸă
REFSEL
एጚ‫ۉ‬უᇸ!
0
REFIN(+)ࢅREFIN(–)ኮक़‫ྔڦ‬ևएጚ‫ۉ‬უă
ాևएጚ‫ۉ‬უᇸă
1
ՂႷॽኄၵ࿋Պ‫ྺײ‬இड0֍ీኟ‫߾׉‬ፕă
CON6 to
CON5
CON4
0
࣐؋ഗ!
ದዃADCྺ࣐؋ई࿮࣐؋߾ፕఇ๕ăൣ0้LjADCᅜ࿮࣐؋ఇ๕߾ፕLj੗ই‫گ‬ഗॲ‫ࡼࠀڦ‬ăዃ1้LjADC
ᅜ࣐؋ఇ๕߾ፕLjᆩࢽ੗ᅜॽᇸፆੇዃᇀമ‫܋‬Ljܸփࣷߴဣཥ‫ټ‬ઠሺᅮဃֶă‫ړ‬ሺᅮྺ1ई2้Lj੗ᅜ্
ᆩ࣐؋ഗă‫֑ړ‬ᆩ߸‫ڦٷ‬ሺᅮኵ้Lj࣐؋ഗጲ‫ۯ‬๑ీă
࣐؋ഗ্ᆩ้Ljఇె๼෇ᆅগฉ‫ۉڦ‬უ੗ᅜྺGNDᅜူ30 mV዁AVDDᅜฉ30 mVă࣐؋ഗ๑ీ้Lj໲Ⴔ
ᄲᅃၵᇧଉǗᅺُLjඪࢆ๼෇ᆅগฉ‫ۉڦ‬უՂႷሞ‫ۉ‬ᇸࡆ‫ڦ‬100 mV‫ాྷݔ‬ă
CON3
CON2 to
CON0
0
CH2 ዁
CH0
ՂႷॽُ࿋Պ‫ྺײ‬இड1֍ీኟ‫߾׉‬ፕă!
ཚ‫ڢ‬჋ስ࿋ăᆯᆩࢽႀ෇Ljᅜ჋ስBED‫ڦ‬ᆶၳఇె๼෇ཚ‫ڢ‬ǖ!
CH2
0
0
0
0
1
1
1
1
CH1
0
0
1
1
0
0
1
1
CH0
0
1
0
1
0
1
0
1
ཚ‫ڢ‬
AIN1(+) – AIN1(–)
AIN2(+) – AIN2(–)
AIN3(+) – AIN3(–)
AIN1(–) – AIN1(–)
ԍା
ԍା
࿒‫ߌد܈‬ഗ
AVDD॔੦ഗ
ၯጚ‫!ܔ‬
0
1
2
0
ጲ‫ۯ‬჋ስሺᅮ = 1Lj൐֑ᆩాևएጚ‫ۉ‬უ
ጲ‫ۯ‬჋ስሺᅮ = 1/6Lj൐֑ᆩ1.17 V एጚ‫ۉ‬უ
ຕ਍स٪ഗ
RS2, RS1, RS0 = 0, 1, 1Ǘฉ‫ۉ‬/ް࿋ =0x0000(00)
ُຕ਍स٪ഗ٪‫ئ‬ADC‫ڦ‬ገ࣑঳ࡕă໲๟ᅃ߲ኻ‫܁‬स٪ഗăྜ‫ُܔׯ‬स٪ഗ‫֡܁ڦ‬ፕࢫLj RDY࿋/ᆅগዃ1ă
IDस٪ഗ
RS2, RS1, RS0 = 1, 0, 0Ǘฉ‫ۉ‬/ް࿋ = 0xXA (AD7792)/0xXB (AD7793)
IDस٪ഗ٪‫ئ‬AD7792/AD7793‫๎ڦ‬՚ࡽă໲๟ᅃ߲ኻ‫܁‬स٪ഗă
IOस٪ഗ
RS2, RS1, RS0 = 1, 0, 1Ǘฉ‫ۉ‬/ް࿋ = 0x00
IOस٪ഗ๟ᅃ߲8࿋स٪ഗLj੗ᅜ‫܁‬ൽࢅႀ෇ຕ਍ă޿स٪ഗᆩᇀ๑ీࢅ჋ስघ૤‫ୁۉ‬ኵă՗18ଚ‫؜‬କIOस٪ഗ࿋ࠀీ௮ຎă
IO0዁IO7՗๖࿋‫ڦ‬࿋ዃLjIOຫ௽ኄၵ࿋ຌᇀIOस٪ഗăIO7՗๖ຕ਍ୁ‫ڼڦ‬ᅃ࿋ăઔࡽዐ‫ڦ‬ຕኵ՗๖޿࿋‫ڦ‬ฉ‫ۉ‬/ް࿋ఐණጒ
ༀă
IO7
0(0)
IO6
0(0)
IO5
0(0)
IO4
0(0)
IO3
IEXCDIR1(0)
IO2
IEXCDIR0(0)
Rev. B | Page 18 of 32
IO1
IEXCEN1(0)
IO0
IEXCEN0(0)
AD7792/AD7793
՗18. IOस٪ഗ࿋ࠀీ௮ຎ
࿋࿋ዃ
IO7 ዁ IO4
IO3 ዁ IO2
IO1 ዁ IO0
࿋ఁ‫׬‬
0
IEXCDIR1 ዁
IEXCDIR0
IEXCEN1 ዁
IEXCEN0
௮ຎ
ՂႷॽኄၵ࿋Պ‫ྺײ‬இड0֍ీኟ‫߾׉‬ፕă
‫ୁۉ‬ᇸ‫ݛ‬ၠ჋ስ࿋ă
‫ୁۉ‬ᇸ‫ݛ‬ၠ
IEXCDIR1
0
IEXCDIR0
0
‫ୁۉ‬ᇸIEXC1૶থ዁ᆅগIOUT1Lj‫ୁۉ‬ᇸIEXC2૶থ዁ᆅগIOUT2ă
0
1
‫ୁۉ‬ᇸIEXC1૶থ዁ᆅগIOUT2Lj‫ୁۉ‬ᇸIEXC2૶থ዁ᆅগIOUT1ă
1
0
1
1
ଇ߲‫ୁۉ‬ᇸ਩૶থ዁ᆅগIOUT1ăৈ‫ୁۉړ‬ᇸยྺ10 μAई210 μA้Lj
֍ሎႹኄᄣยዃă
ଇ߲‫ୁۉ‬ᇸ਩૶থ዁ᆅগIOUT2ăৈ‫ୁۉړ‬ᇸยྺ10 μAई210 μA้Lj
֍ሎႹኄᄣยዃă
ኄၵ࿋੗ᆩᇀ๑ీࢅ্ᆩघ૤‫ୁۉ‬ᇸĂ჋ስघ૤‫ୁۉ‬ኵă
IEXCEN1
0
0
1
1
IEXCEN0
0
1
0
1
‫ୁۉ‬ᇸኵ!
घ૤‫্ୁۉ‬ᆩ
10 μA
210 μA
1 mA
฿ۙस٪ഗ
RS2, RS1, RS0 = 1, 1, 0Ǘฉ‫ۉ‬/ް࿋ = 0x8000
(AD7792), 0x800000 (AD7793))
஢ଉ‫ײ‬स٪ഗ
RS2, RS1, RS0 = 1, 1, 1Ǘฉ‫ۉ‬/ް࿋ = 0x5XXX
(AD7792), 0x5XXX00 (AD7793)
௅߲ఇె๼෇ཚ‫ڢ‬ᆶᅃ߲ጆᆩ‫ڦ‬฿ۙस٪ഗLjᆩᇀԍ٪޿
ཚ‫ڦڢ‬฿ۙၯጚဣຕăAD7792ాዃᅃ߲16࿋฿ۙस٪ഗǗ
AD7793ాዃᅃ߲24࿋฿ۙस٪ഗǗ฿ۙस٪ഗ‫ڦ‬ฉ‫ۉ‬/ް
࿋ኵྺ0x8000(00)ăُस٪ഗᇑ၎࠲‫ڦ‬஢ଉ‫ײ‬स٪ഗࠓ‫ׯ‬
ᅃ߲स٪ഗ‫ܔ‬ăසࡕᆩࢽഔ‫ాۯ‬ևईဣཥଭ‫ۉ‬ೝၯጚLjฉ
‫ްۉ‬࿋ኵॽԥጲ‫ޮۯ‬ႀă฿ۙस٪ഗྺ‫܁‬/ႀस٪ഗă‫ܔ‬฿
ۙस٪ഗ৊ႜႀ֡ፕ้LjAD7792/AD7793ՂႷ‫ت‬ᇀ੣ှఇ
๕ईู‫ۉ‬ఇ๕ă
஢ଉ‫ײ‬स٪ഗ๟ᅃ߲16࿋(AD7792)ई24࿋(AD7793)स٪
ഗă஢ଉ‫ײ‬स٪ഗԍ٪ADC‫ڦ‬஢ଉ‫ײ‬ၯጚဣຕăAD7792/
AD7793ᆶෙ߲஢ଉ‫ײ‬स٪ഗLj௅߲ཚ‫ڢ‬ᆶᅃ߲ጆᆩ‫ڦ‬஢ଉ
‫ײ‬स٪ഗă஢ଉ‫ײ‬स٪ഗ਩ྺ‫܁‬/ႀस٪ഗă‫ܔړ‬஢ଉ‫ײ‬स
٪ഗ৊ႜႀ֡ፕ้LjADCՂႷ‫ت‬ᇀู‫ۉ‬ఇ๕ई੣ှఇ๕ă
ኄၵस٪ഗሞฉ‫้ۉ‬๑ᆩ߾‫׍‬ၯጚ‫ڦ‬஢ଉ‫ײ‬ၯጚဣຕ৊ႜ
ದዃ)ኴႜၯጚ้‫ڦ‬ሺᅮྺ1*ǗᅺُLj߳ഗॲਏᆶփཞ‫ڦ‬ఐ
ණဣຕă޿ၯጚဣຕኵൽਦᇀ໯჋एጚ‫ۉ‬უ)ాևएጚ‫ۉ‬უ
ईྔևएጚ‫ۉ‬უ*ăසࡕᆩࢽഔ‫ాۯ‬ևईဣཥ஢ଉ‫ײ‬ၯጚLj
ईኁ‫ܔ‬஢ଉ‫ײ‬स٪ഗኴႜႀ֡ፕLj޿ఐණኵॽԥጲ‫ޮۯ‬
ႀă
Rev. B | Page 19 of 32
AD7792/AD7793
ADC‫ۉ‬ୟ႑တ
0
߁ຎ
AD7792/AD7793ྺ‫ࡼࠀگ‬ADCLjాዃΣ-Δۙ዆ഗĂ࣐؋
ഗĂएጚ‫ۉ‬უᇸĂᅏ՗‫ٷݣ‬ഗࢅೌాຕጴ୳հഗLjዷᄲᆩ
ᇀ֪ଉ੻‫ۯ‬ༀ‫گྷݔ‬ೕ႑ࡽLj૩සუ૰‫ߌد‬ഗĂ‫ۉ‬ጱ‫ࢅ׹‬
࿒‫֪܈‬ଉᆌᆩዐ‫ڦ‬႑ࡽă
–20
(dB)
–40
௅߲ഗॲ‫ۼ‬ᆶෙֶ߲‫ݴ‬๼෇‫܋‬Lj੗ᅜԥದዃྺ࣐؋ఇ๕ई
࿮࣐؋ఇ๕ă޿ഗॲ़੗ᅜ֑ᆩాև1.17 Vएጚ‫ۉ‬უᄺ੗ᅜ
֑ᆩྔևएጚ‫ۉ‬უă཮12၂๖କഗॲ߾ፕ໯Ⴔ‫ڦ‬एԨ૶
থă
–60
–100
GND
AVDD
VBIAS
0
100
120
཮13. ‫߸ړ‬ႎ໏୲ྺ4.17 Hz้‫୳ڦ‬հഗၚᆌ
MUX
BUF
Σ-Δ
ADC
IN-AMP
SERIAL
INTERFACE
AND
CONTROL
LOGIC
REFIN(+)
GND
AVDD
DOUT/RDY
DIN
SCLK
CS
–20
DVDD
INTERNAL
CLOCK
AD7792/AD7793
IOUT2
CLK
཮23/एԨ૶থ཮
–40
(dB)
REFIN(–)
80
0
R C
AIN2(–)
60
GND
AVDD
RREF
40
FREQUENCY (Hz)
BAND GAP
REFERENCE
AIN1(+)
AIN1(–)
AIN2(+)
20
REFIN(+) REFIN(–)
04855-012
THERMOCOUPLE
JUNCTION R
04855-018
–80
–60
཮13዁཮16၂๖କփཞ໏୲ူ‫߳ڦ‬ዖૌ႙୳հഗ‫ڦ‬ೕ୲ၚ
ᆌă
04855-019
–100
0
20
40
60
80
100
120
140
160
180
200
FREQUENCY (Hz)
཮14. ‫߸ړ‬ႎ໏୲ྺ16.7 Hz้‫୳ڦ‬հഗၚᆌ
0
–20
–40
–60
–80
–100
04855-020
ߵ਍๼‫߸؜‬ႎ໏୲‫ڦ‬փཞLjAD7792/AD7793֑ᄣ‫୳ڦ‬հഗ
ᄺ୼ᆶփཞLjᅜՍᆫࣅ‫ܔ‬ଉࣅሯำࢅഗॲሯำ‫ڦ‬ᅞ዆ă‫ړ‬
߸ႎ໏୲ኵሞ4.17 Hz዁12.5 Hz‫้ాྷݔ‬Ljഗॲ֑ᆩSinc3୳
հഗࢅ਩ኵ୳հഗă‫߸ړ‬ႎ໏୲ኵሞ16.7 Hz዁39 Hz‫ྷݔ‬
ా้Ljഗॲ֑ᆩঢ়Ⴊኟ‫ڦ‬Sinc3୳հഗă‫߸ړ‬ႎ໏୲‫ڟٳ‬
16.7 Hz้Ljُ୳հഗ༵ࠃ50 Hz/60 Hzཞ้ᅞ዆ă‫߸ړ‬ႎ໏
୲ኵሞ50 Hz዁242 Hz‫้ాྷݔ‬Lj֑ᆩSinc4୳հഗă‫߸ړ‬ႎ
໏୲‫ڟٳ‬470 Hz้Ljഗॲ֑ᆩৈᆶओ‫୳ڦీࠀݴ‬հഗă
–80
(dB)
ᆩࢽీࠕཚࡗՊ‫ײ‬ยዃAD7792/AD7793‫ڦ‬๼‫؜‬໏୲(fADC)ă
՗16ଚ‫؜‬କ੗ᆩ‫߸ڦ‬ႎ໏୲त၎ᆌ‫ॺڦ‬૬้क़ăຕጴ୳հ
ഗ‫ڦ‬ዷᄲፕᆩ๟‫ز‬ఇ߅ඡᅞ዆ă‫߸ړ‬ႎ໏୲ྺ16.7 Hzई߸
‫้گ‬Lj50 Hzࢅ60 Hzཞ้ᅞ዆‫ڦ‬ၳࡕፌॅǗᅺྺሞኄၵ߸
ႎ໏୲ူLj။հೕ୲ཞ้ྺ50 Hzࢅ60 Hză֖९཮14ă
0
500
1000
1500
2000
2500
FREQUENCY (Hz)
཮15. ‫߸ړ‬ႎ໏୲ྺ242 Hz้‫୳ڦ‬հഗၚᆌ
Rev. B | Page 20 of 32
3000
AD7792/AD7793
0
࿋स٪ഗኴႜ‫֡܁‬ፕ‫้ڦ‬ႾǗ཮4၂๖‫ܔ‬๼෇ᅎ࿋स٪ഗ
ኴႜႀ֡ፕ‫้ڦ‬Ⴞăन๑ሞ‫ڼ‬ᅃْ‫֡܁‬ፕኮࢫDOUT/RDY
၍ୟ‫ۉߛڟ࣮ݓ‬ೝLjᄺ੗ᅜ‫ْٗܠ‬ຕ਍स٪ഗዐ‫܁‬ൽ‫؜‬၎
ཞ‫ڦ‬ጴăփࡗLjՂႷඓԍሞူᅃ๼‫߸؜‬ႎ݀ิኮമྜ‫ׯ‬ኄ
ၵ‫֡܁‬ፕă૶Ⴤ‫܁‬ൽఇ๕ူLjኻీ‫ܔ‬ຕ਍स٪ഗ৊ႜᅃْ
‫֡܁‬ፕă
–10
(dB)
–20
–30
‫ړ‬CS‫ت‬ᇀ‫ۉگ‬ೝጒༀ้Lj‫ز‬ႜথ੨੗ᅜሞෙ၍๕ఇ๕ူ߾
ፕ ă ُ ้ Lj SCLKĂ DINࢅ DOUT/RDYᆩ ઠ ᇑ AD7792/
AD7793ཚ႑ă੗ᅜᆩጒༀस٪ഗዐ‫ڦ‬RDY࿋॔๫ገ࣑๟‫ޏ‬
঳ຐăኄዖ‫ݛ‬ӄ๢ᆩᇀᇑྲ੦዆ഗ৊ႜথ੨‫ڦ‬ᆌᆩăසႴ
ॽ ᆩፕ঴ஓ႑ࡽLj੗ᅜᆩ‫܋‬੨ᆅগׂิ޿႑ࡽăሞྲ੦዆
ഗথ੨ᆌᆩዐLjॺᅱሞ௅ଇْຕ਍‫د‬๼ኮक़ॽSCLKዃྺߛ
‫ۉ‬ೝă
–40
–60
04855-021
–50
0
1000 2000 3000 4000 5000 6000 7000 8000 9000 10000
FREQUENCY (Hz)
཮16. ‫߸ړ‬ႎ໏୲ྺ470 Hz้‫୳ڦ‬հഗၚᆌ
ຕጴথ੨!
AD7792/AD7793૧ᆩᅃፇೌాस٪ഗ੦዆ഄ੗Պ‫ీࠀײ‬ă
ຕ਍ཚࡗഗॲ‫زڦ‬ႜথ੨ႀ෇ฉຎस٪ഗLjُথ੨࣏༵ࠃ
‫ܔ‬ኄၵೌాस٪ഗ‫܁ڦ‬ൽ‫ݡ‬࿚ăᇑഗॲ৊ႜ‫ڦ‬໯ᆶཚ႑਩
ՂႷᅜ‫ܔ‬ཚ႑स٪ഗ‫ڦ‬ႀ֡ፕਸ๔ăฉ‫ۉ‬ईް࿋ኮࢫLjഗ
ॲ‫ܔځڪ‬ഄཚ႑स٪ഗኴႜႀ֡ፕăႀ෇ُस٪ഗ‫ڦ‬ຕ਍
ਦۨକথူઠ‫֡ڦ‬ፕ๟‫֡܁‬ፕ࣏๟ႀ֡ፕLjᅜतُ‫֡܁‬ፕ
ईႀ֡ፕ‫ܔڦ‬ၡ๟నᅃ߲स٪ഗăᅺُLjසႴၠഗॲా‫ڦ‬
ഄ໲स٪ഗాႀ෇ຕ਍LjՂႷ๯ံ‫ܔ‬ཚ႑स٪ഗኴႜႀ֡
ፕLjምኴႜ‫ܔ‬໯჋स٪ഗ‫ڦ‬ႀ֡ፕăසႴ‫܁‬ൽഄ໲स٪ഗ
ా‫ڦ‬ຕ਍)჋ስ૶Ⴤ‫܁‬ൽఇ๕‫*ྔأ‬LjᄺՂႷံ‫ܔ‬ཚ႑स٪
ഗ৊ႜႀ֡ፕLj඗ࢫኴႜ‫ܔ‬໯჋स٪ഗ‫֡܁ڦ‬ፕă
AD7792/AD7793‫زڦ‬ႜথ੨ᆯ຺߲႑ࡽፇ‫ׯ‬ǖCSĂDINĂ
SCLKࢅDOUT/RDYăDIN၍ୟᆩᇀॽຕ਍‫د‬๼዁ೌాस٪
ഗ ዐ Lj DOUT/RDYሶ ᆩ ᇀ ٗ ೌ ా स ٪ ഗ ዐ इ ൽ ຕ ਍ ă
SCLK๟ഗॲ‫زڦ‬ႜ้ዓ๼෇Lj໯ᆶຕ਍‫د‬๼)࿮ஃ๟DIN
ฉ࣏๟DOUT/RDYฉ*਩ᇑSCLK႑ࡽ၎࠲ăDOUT/RDYᆅ
গᄺ੗๼‫؜‬ຕ਍৽Ⴣ႑ࡽǗ‫ړ‬๼‫؜‬स٪ഗዐᆶႎຕጴጴ੗
ᆩ้Lj޿၍ୟՎྺ‫ۉگ‬ೝă‫ܔ‬ຕ਍स٪ഗ‫֡܁ڦ‬ፕྜ‫ׯ‬
้Lj޿၍ୟް࿋ྺߛ‫ۉ‬ೝăຕ਍स٪ഗ߸ႎኮമLj޿၍ୟ
ᄺࣷՎྺߛ‫ۉ‬ೝLj༵๖ሞُ้փᆌ‫ܔ‬ഗॲ৊ႜ‫֡܁‬ፕLjᅜ
ඓԍሞ߸ႎຕ਍स٪ഗ‫ײࡗڦ‬ዐփࣷ݀ิຕ਍‫܁‬ൽ֡ፕă
ᆩᇀ჋ስഗॲLj੗ᅜሞ‫߲ܠ‬ഗॲ‫ز‬ႜሞཞᅃཉጺ၍ฉ‫ڦ‬ဣ
ཥዐ‫ܔ‬AD7792/AD7793৊ႜ঴ஓă
AD7792/AD7793੗ᅜሞCSᆩፕኡཞօ႑ࡽ‫ڦ‬൧઄ူ߾ፕă
ኄዖ‫ݛ‬ӄ๢ᆩᇀDSPথ੨ăُ้LjᆯᇀሞDSPዐLjCSᅃӯ
‫؜‬၄ሞSCLK‫ူڦ‬ইᄂኮࢫLjᅺُLj‫ڼ‬ᅃ࿋(MSB)ࣷԥCSᆶ
ၳ‫ں‬ໃ‫؜‬ăኻᄲፏ๰้Ⴞຕᄲ൱LjSCLKՍ੗ᅜሞຕ਍ገ࣑
ኮक़૶Ⴤሏႜă
‫ܔ‬DIN๼෇ႀ෇ᅃ૶‫ڦز‬1Lj੗ᅜް࿋‫ز‬ႜথ੨ăසሞ዁ณ
32߲‫ز‬ႜ้ዓా‫׼‬ჄၠAD7792/AD7793၍ୟాႀ෇இड
1Lj੗ॽ޿‫ز‬ႜথ੨ް࿋ă‫ٱॲ෉ิׂړ‬ဃईဣཥࠤቱLj
ीܸ‫ڞ‬ዂথ੨้Ⴞ‫ٱ‬ဃ้Ljኄዖ‫݆ݛ‬੗ඓԍॽথ੨ް࿋‫ڟ‬
ᅙኪጒༀăް࿋֡ፕ๑থ੨‫ܔځڪڟ࣮ݓ‬ཚ႑स٪ഗኴႜ
ႀ֡ፕ‫ڦ‬ጒༀă޿֡ፕࣷॽ໯ᆶस٪ഗ‫ాڦ‬ඹް࿋‫ڟ‬ഄฉ
‫ۉ‬ኵăް࿋ࢫLjᆩࢽᆌ‫ځڪ‬500 μsም‫ݡ‬࿚‫ز‬ႜথ੨ă
AD7792/AD7793੗ᅜದዃྺ૶Ⴤገ࣑ఇ๕ई‫ْڇ‬ገ࣑ఇ
๕ă֖९཮17዁཮19ă
཮3ࢅ཮4၂๖କᇑAD7792/AD7793૶থ‫้ڦ‬Ⴞ཮Ljഄዐ ᆩ
ᇀ‫ܔ‬ഗॲ৊ႜ঴ஓă཮3၂๖‫ܔ‬AD7792/AD7793‫ڦ‬๼‫؜‬ᅎ
Rev. B | Page 21 of 32
AD7792/AD7793
‫ْڇ‬ገ࣑ఇ๕!
૶Ⴤገ࣑ఇ๕!
ሞ‫ْڇ‬ገ࣑ఇ๕ူLjAD7792/AD7793ሞଇْገ࣑ኮक़‫ت‬ᇀ
࠲܏ఇ๕ăॽఇ๕स٪ഗዐ‫ڦ‬MD2ĂMD1ࢅMD0‫ݴ‬՚ยዃ
ྺ0Ă0Ă1Lj੗ഔ‫ْڇۯ‬ገ࣑ăኄ้LjAD7792/AD7793ံ
ኴႜฉ‫֡ۉ‬ፕLjምኴႜ‫ْڇ‬ገ࣑Lj඗ࢫ‫܏࠲࣮ݓ‬ఇ๕ăೌ
ాና‫ږ‬ഗฉ‫ۉ‬Ⴔᄲ1 msăገ࣑Ⴔᄲ‫้ڦ‬क़‫ྺ܈׊‬2 × tADCă
‫ړ‬ገ࣑ྜ‫ࢫׯ‬LjDOUT/RDYՎྺ‫ۉگ‬ೝLjᅜՍ՗๖ገ࣑ྜ
‫ׯ‬ăٗຕ਍स٪ഗዐ‫܁‬ൽຕ਍ጴࢫLjDOUT/RDYՎྺߛ‫ۉ‬
ೝăසࡕCSྺ‫ۉگ‬ೝLjሞူᅃْገ࣑ྜ‫ׯ‬ኮമLjDOUT/
RDYॽԍ‫ۉߛ׼‬ೝăසՂᄲLjन๑DOUT/RDYᅙՎྺߛ‫ۉ‬
ೝLjᄺ੗ᅜ‫܁ْܠ‬ൽຕ਍स٪ഗă
ฉ ‫ ࢫ ۉ‬Lj ఐ ණ ‫ ڦ‬ገ ࣑ ఇ ๕ ྺ ૶ Ⴤ ገ ࣑ ఇ ๕ ă AD7792/
AD7793ኴႜ૶Ⴤገ้࣑Lj௅ْገ࣑ྜ‫ࢫׯ‬Ljጒༀस٪ഗዐ
‫ڦ‬RDY࿋Վྺ‫ۉگ‬ೝăසࡕCSྺ‫ۉگ‬ೝLjሶ‫ړ‬ᅃْገ࣑ྜ
‫้ׯ‬LjDOUT/RDY၍ୟᄺࣷՎྺ‫ۉگ‬ೝăැᄲ‫܁‬ൽገ࣑঳
ࡕLjᆩࢽႴᄲ‫ܔ‬ཚ႑स٪ഗኴႜႀ֡ፕLjᅜՍኸ๖ူᅃ֡
ፕྺ‫܁‬ൽຕ਍स٪ഗ֡ፕăॽSCLKஞ؋แेᇀADCࢫLj
ഗॲ૬ਗ਼ሞDOUT/RDYᆅগฉኴႜຕጴገ࣑ă‫܁‬ൽገ࣑঳
ࡕࢫLjDOUT/RDY‫ۉߛڟ࣮ݓ‬ೝăසႴᄲLjᆩࢽ੗ᅜ‫ْܠ‬
‫܁‬ൽ޿स٪ഗă‫ڍ‬ᆩࢽՂႷඓԍሞူᅃْገ࣑ྜ‫ׯ‬മLjփ
‫ݡ‬࿚ຕ਍स٪ഗǗ‫ޏ‬ሶLjႎ‫ڦ‬ገ࣑঳ࡕॽ۪฿ă
CS
DIN
0x08
0x200A
0x58
DATA
04855-015
DOUT/RDY
SCLK
཮17.‫ْڇ‬ገ࣑
CS
0x58
0x58
DIN
DATA
DATA
04855-016
DOUT/RDY
SCLK
཮18. ૶Ⴤገ࣑
Rev. B | Page 22 of 32
AD7792/AD7793
૶Ⴤ‫܁‬ൽ!
ገ࣑֡ፕྜ‫ׯ‬മྜ‫ܔׯ‬ຕ਍ጴ‫܁ڦ‬ൽăසࡕሞူᅃْገ࣑
ྜ ‫ ׯ‬ኮ മ Lj ᆩ ࢽ ช ࿄ ‫ ܁‬ൽ ገ ࣑ ঳ ࡕ Lj ई ኁ ྺ AD7792/
AD7793༵ࠃ‫زڦ‬ႜ้ዓዜ೺ຕփፁᅜྜ‫ܔׯ‬ገ࣑ጴ‫܁ڦ‬
ൽLjሶ‫ူړ‬ᅃْገ࣑ྜ‫้ׯ‬Lj‫ز‬ႜ๼‫؜‬स٪ഗॽް࿋Ljႎ
ገ࣑঳ࡕॽዃᇀ๼‫ز؜‬ႜस٪ഗዐă
੗ᅜ‫ܔ‬AD7792/AD7793৊ႜದዃLj๑‫ڥ‬௅ْገ࣑ྜ‫ׯ‬ኮ
ࢫLjገ࣑঳ࡕጲ‫ۯ‬ዃᇀDOUT/RDY၍ୟฉǗܸ࿮Ⴔሞ௅ْ
‫ݡ‬࿚ຕ਍മ‫ܔ‬ཚ႑स٪ഗኴႜႀ֡ፕăॽ01011100ႀ෇ཚ
႑स٪ഗࢫLjᆩࢽኻႴྺADC༵ࠃ๢‫ڦړ‬SCLKዜ೺ຕLj
न ੗ ੦ ዆ ሞ ఇ ຕ ገ ࣑ ྜ ‫ ࢫ ׯ‬Lj 16࿋ ई 24࿋ ጴ ጲ ‫ ۯ‬ዃ ᇀ
DOUT/RDY၍ୟฉăADCᆌದዃྺ૶Ⴤገ࣑ఇ๕ă
ැᄲཽ‫૶؜‬Ⴤ‫܁‬ൽఇ๕LjՂႷሞRDYᆅগྺ‫ۉگ‬ೝ้ॽኸ
ସ01011000ႀ෇ཚ႑स٪ഗăሞ૶Ⴤ‫܁‬ൽఇ๕ူLjADCࣷ
॔੦DIN၍ୟฉ‫ڦ‬ऄ‫ۯ‬LjᅜՍీথ๭ཽ‫૶؜‬Ⴤ‫܁‬ൽఇ๕‫ڦ‬
ኸସăُྔLjසࡕDINฉ૶Ⴤ‫؜‬၄32߲1LjADCॽް࿋ăᅺ
ُLjሞ૶Ⴤ‫܁‬ൽఇ๕ူLjሞഗॲথ๭‫ڟ‬ኸସമLjDINᆌԍ
‫ۉگ׼‬ೝă
‫ړ‬DOUT/RDYՎྺ‫ۉگ‬ೝLj༵๖ገ࣑֡ፕᅙ঳ຐ้LjՂႷ
ྺADC༵ࠃፁࠕ‫ڦ‬SCLKዜ೺ຕă඗ࢫLjຕ਍ገ࣑঳ࡕՍ
ࣷዃᇀDOUT/RDY၍ୟฉă‫܁‬ൽገ࣑঳ࡕࢫLjDOUT/RDY
‫ۉߛڟ࣮ݓ‬ೝLj኱‫ူڟ‬ᅃገ࣑঳ࡕ੗ᆩྺኹăኄዖఇ๕
ူLjຕ਍ኻీԥ‫܁‬ൽᅃْLjଷྔLjᆩࢽՂႷඓԍሞူᅃْ
CS
0x5C
DIN
DATA
DATA
DATA
04855-017
DOUT/RDY
SCLK
཮19.૶Ⴤ‫܁‬ൽ
Rev. B | Page 23 of 32
AD7792/AD7793
‫ۉ‬ୟ௮ຎ!
૩සLj‫ړ‬ሺᅮยዃྺ64้Lj਩‫ߵݛ‬ሯำ‫ۆ‬႙ኵྺ40 nVLjኄ
၎‫ړ‬ᇀ21࿋ᆶၳ‫ݴ‬Ր୲ई18.5࿋‫ރރ‬ኵ‫ݴ‬Ր୲ă
ఇె๼෇ཚ‫!ڢ‬
AD7792/AD7793ᆶ3ֶ߲‫ݴ‬ఇె๼෇ཚ‫ڢ‬ă‫ړ‬ഗॲሏႜሞ
࣐؋ఇ๕ူ้Ljኄၵཚ‫ॽڢ‬ᇑೌా࣐٪‫ٷݣ‬ഗ၎૶Ǘܸ‫ړ‬
ഗॲሏႜሞ࿮࣐؋ఇ๕ူ้Ljཚ‫ڢ‬኱থᇑۙ዆ഗ၎૶ăሞ
࣐؋ఇ๕ူ(ದዃस٪ഗዐ‫ڦ‬BUF࿋ยዃྺ1)Lj๼෇ཚ‫ڢ‬ઍ
෇࣐؋‫ٷݣ‬ഗ‫ߛڦ‬ፆੇ๼෇पăᅺُLj๼෇‫ࠕీ܋‬ఱ๴ড
‫ڦٷ‬ᇸፆੇLj๢ᆩᇀఫၵᇑྔևፆႠ‫ߌد‬ഗ኱থ၎૶‫ڦ‬ᆌ
ᆩLj૩සᆌՎऺई‫ۉ‬ፆ๕࿒‫܈‬ॠ֪ഗ(RTD)‫ڪ‬ă
‫ړ‬BUF = 0้Ljഗॲሞ࿮࣐؋ఇ๕ူ߾ፕăኄॽ‫ڞ‬ዂডߛ‫ڦ‬
ఇె๼෇‫ୁۉ‬ă൩ጀᅪLj޿࿮࣐؋๼෇ୟ০੗ྺൻ‫ۯ‬ᇸ༵
ࠃ‫ۯ‬ༀ‫޶ڦ‬ሜăᅺُLj๼෇ᆅগฉ‫ۉڦ‬ፆᇑ‫ۉ‬ඹፇࢇ੗ీ
ࣷᆅഐሺᅮဃֶLjਏ༹ൽਦᇀൻ‫ۯ‬ADC๼෇‫ڦ‬႑ࡽᇸ‫ڦ‬๼
‫؜‬ፆੇă՗19၂๖କྺ‫ݞ‬ኹሞ20࿋‫ݴ‬Ր୲຤ೝཉॲူׂิ
ሺᅮဃֶLj࿮࣐؋ఇ๕ူྔև‫ۉ‬ፆ/‫ۉ‬ඹ‫ڦ‬ඹႹኵă
՗19. 20࿋‫ݴ‬Ր୲ཉॲူLj࿮ሺᅮဃֶ‫ྔڦ‬ևR-Cፇࢇ
C (pF)
R (Ω)
50
9k
100
6k
500
1.5 k
1000
900
5000
200
AD7792/AD7793ৈሞ‫ړ‬ሺᅮኵྺ1ई2้Ljሏႜሞ࿮࣐؋ఇ
๕ူă‫ړ‬ሺᅮኵ߸ߛ้Lj࣐؋ഗጲ‫ۯ‬๑ీă࣐؋ఇ๕ူLj
ਨ‫ܔ‬๼෇‫ۉ‬უ‫ྷݔ‬၌ᇀGND + 100 mV዁AVDD – 100 mVኮ
क़ă‫ړ‬ሺᅮኵ‫ڟٳ‬4ई߸ߛ้Lj๑ీᅏ՗‫ٷݣ‬ഗă‫ړ‬ᅏ՗
‫ٷݣ‬ഗ੗ᆩ้Ljਨ‫ܔ‬๼෇‫ۉ‬უ‫ྷݔ‬၌ᇀGND + 300 mV዁
AVDD – 1.1 Vኮक़ăሞยۨࠌఇ‫ۉ‬უ้LjᆩࢽՂႷጀᅪฉ
ຎ၌዆LjᅜՍԍኤ‫ۉ‬უփ‫ࡗג‬ฉຎ၌ኵLjܸٗՆ௨ই‫گ‬ഗ
ॲ‫ڦ‬၍ႠႠీࢅሯำႠీă
࿮࣐؋ఇ๕ူLjਨ‫ܔ‬๼෇‫ۉ‬უ‫ྷݔڦ‬ሞGND – 30 mV዁
AVDD + 30 mVኮक़ă޶ਨ‫ܔ‬๼෇‫ۉ‬უ၌ኵྺ॔੦၎‫ܔ‬ᇀ
GND‫ڦ‬ኈມटႠၭ႑ࡽ༵ࠃକཉॲă
ᅏ՗‫ٷݣ‬ഗ
ሞAD7792/AD7793ాLj੗ཚࡗຕጴ‫ݛ‬๕ॽఇె๼෇႑ࡽ‫ݣ‬
‫ٷ‬1዁2Ԡă‫ڍ‬๟Lj‫ړ‬ሺᅮྺ4ई߸ߛ้Lj࣐؋ഗ๼‫؜‬႑ࡽ
ॽแेᇀೌాᅏ՗‫ٷݣ‬ഗ‫ڦ‬๼෇‫܋‬ă‫گ‬ሯำᅏ՗‫ٷݣ‬ഗ‫ڦ‬
٪ሞᅪ࿆ጣၭ‫܈ޗ‬႑ࡽ੗ᅜሞAD7792/AD7793ాԥ‫ٷݣ‬Lj
ཞ้ධ඗ԍ‫؜׼‬෥‫ڦ‬ሯำႠీă
૧ ᆩ ದ ዃ स ٪ ഗ ዐ ‫ ڦ‬࿋ G2዁ ࿋ G0Lj ੗ ᅜ ॽ AD7792
/AD7793‫ڦ‬ሺᅮยዃྺ1Ă2Ă4Ă8Ă16Ă32Ă64ई128ăᅺ
ُLj‫֑ړ‬ᆩ2.5 Vྔևएጚ‫ۉ‬უᇸ้Lj‫ڇ‬टႠ‫ۉ‬უ‫ྺྷݔ‬0
mV዁20 mV‫ڟ‬0 V዁2.5 VLjܸມटႠ‫ۉ‬უ‫ྺྷݔ‬±20 mV዁
±2.5 Vă‫ړ‬ᅏ՗‫ٷݣ‬ഗ੗ᆩ้)ሺᅮ≥ 4*Ljࠌఇ‫ۉ‬უኵ((AIN
(+) + AIN(–))/2)փ‫گڥ‬ᇀ0.5 Vă
සࡕAD7792/AD7793֑ᆩ‫ۉ‬უኵᇑAVDD၎‫ྔڦڪ‬ևएጚ
‫ۉ‬უᇸLjሶሞᅏ՗‫ٷݣ‬ഗᆶၳ‫ڦ‬൧઄ူLjྺକԍኤీࠕኟ
‫ ߾ ׉‬ፕ Lj ఇ ె ๼ ෇ ႑ ࡽ ‫ ۉ ڦ‬უ փ ‫ ߛ ڥ‬ᇀ VREF/ሺ ᅮ ‫ڦ‬
90%ă
ມटႠ/‫ڇ‬टႠದዃ
AD7792/AD7793‫ڦ‬ఇె๼෇‫܋‬੗থ๴ሞ‫ڇ‬टႠईມटႠ๼
෇‫ۉ‬უ‫ྷݔ‬ăມटႠ๼෇‫ྷݔ‬փ‫پ‬՗ഗॲ੗ᅜఱ๴၎‫ܔ‬ᇀ
ဣཥGND‫ۉ޶ڦ‬უăAIN(+)๼෇‫ڦ܋‬ມटႠ႑ࡽࢅ‫ڇ‬टႠ
႑ࡽ਩ᅜAIN(−)๼෇‫ۉڦ܋‬უྺएጚă૩සLjසࡕAIN(−)
ྺ2.5 VLjADCದዃྺ‫ڇ‬टႠఇ๕Ljሺᅮྺ1LjሶAIN(+)ᆅ
গ‫ڦ‬๼෇‫ۉ‬უ‫ྺྷݔ‬2.5 V዁5 Vă
සࡕADCದዃྺມटႠఇ๕LjሶAIN(+)๼෇‫ڦ܋‬ఇె๼෇
‫ྺྷݔ‬0 V዁5 Văཚࡗ‫ܔ‬स٪ഗ‫ڦ‬U/B࿋৊ႜՊ‫ײ‬Lj੗ॽ
ADCದዃྺ‫ڇ‬ມटႠఇ๕ईມटႠఇ๕ă
ຕ਍๼‫؜‬Պஓ!
‫ړ‬ADCದዃྺ‫ڇ‬टႠ߾ፕఇ๕้Lj๼‫؜‬ஓྺጲ඗)኱থ*ܾ
৊዆ஓǗଭֶ‫ݴ‬๼෇‫ۉ‬უ‫ܔ‬ᆌ‫ڦ‬ஓྺ00…00Ljዐक़‫ۉ‬ೝ‫ۉ‬
უ ‫ ܔ‬ᆌ ‫ ڦ‬ஓ ྺ 100...000Lj ஢ ଉ ‫ ײ‬๼ ෇ ‫ ۉ‬უ ‫ ܔ‬ᆌ ‫ ڦ‬ஓ ྺ
111...111ă
Code = (2N × AIN × GAIN)/VREF
‫ړ‬ADCದዃྺມटႠ߾ፕఇ๕้Lj๼‫؜‬ஓྺೋᅎܾ৊዆
ஓǗ޶஢ଉ‫ۉײ‬უ‫ܔ‬ᆌ‫ڦ‬ஓྺ000...000Ljଭֶ‫ݴ‬๼෇‫ۉ‬უ
‫ ܔ‬ᆌ ‫ ڦ‬ஓ ྺ 100...000Lj ኟ ஢ ଉ ‫ ײ‬๼ ෇ ‫ ۉ‬უ ‫ ܔ‬ᆌ ‫ ڦ‬ஓ ྺ
111...111ăඪࢆ‫ܔ‬ᆌᇀఇె๼෇‫ۉ‬უ‫ڦ‬๼‫؜‬ஓ਩੗՗๖
ྺǖ
Code = 2N – 1 × [(AIN × GAIN /VREF) + 1]
ഄዐǖAIN՗๖ఇె๼෇‫ۉ‬უǗGAIN՗๖ᅏ՗‫ٷݣ‬ഗ‫ڦ‬ย
ዃDŽ1዁128DžǗAD7792‫ڦ‬Nኵྺ16LjAD7793‫ڦ‬Nኵྺ24ă
Rev. B | Page 24 of 32
AD7792/AD7793
භ܏‫!ୁۉ‬
AD7792/AD7793ాዃଇ߲100 nA࢛ୁ݀ิഗǖᅃ߲ᆩᇀ༵
ࠃٗAVDD‫ڟ‬AIN(+)‫ڦ‬ᇸ‫ୁۉ‬Ljଷᅃ߲ᆩᇀ༵ࠃٗAIN(−)‫ڟ‬
GND‫ڦ‬ဌ‫ୁۉ‬ăኄၵ‫ୁۉ‬ൎ࣑዁჋ۨ‫ڦ‬ఇె๼෇‫ܔ‬ăኄଇ
߲‫ୁۉ‬ईਸई࠲Ljൽਦᇀದዃस٪ഗዐ‫ڦ‬භ܏‫ୁۉ‬๑ీ
(BO)࿋ăሞఇె๼෇ཚ‫ڢ‬ฉኴႜ֪ଉ֡ፕኮമLj੗ᅜ૧ᆩ
ኄၵ‫ୁۉ‬ઠඓණྔև‫ߌد‬ഗ๟‫ޏ‬ኟ‫߾׉‬ፕăথཚභ܏‫ୁۉ‬
ࢫLj‫ྔ෇ୁୁۉ‬և‫ߌد‬ഗ‫ۉ‬ୟLj඗ࢫՍ੗ሞఇె๼෇ཚ‫ڢ‬
ฉ֪ଉ๼෇‫ۉ‬უăසࡕ֪‫ۉڦڥ‬უኵྺ஢ଉ‫ײ‬LjᆩࢽႴᄲ
ඓණׂิ஢ଉ‫ۉײ‬უ‫ڦ‬ᇱᅺă஢ଉ‫܁ײ‬ຕᅪ࿆ጣ੗ీ٪ሞ
മ‫ߌد܋‬ഗਸୟLjᄺ੗ీ๟മ‫ߌد܋‬ഗࡗሜLjཚࡗ஢ଉ‫ײ‬
๼‫؜‬՗၄‫؜‬ઠLjईኁඍณएጚ‫ۉ‬უLjᅺُLj‫ڞ‬ዂຕ਍ᶏ࿋
዁ඇ1ă
‫ړ‬๼‫ྺ؜‬ඇ1้LjᆩࢽႴᄲॠֱ๟‫ޏ‬٪ሞኄෙዖ൧઄Lj඗ࢫ
ፔ‫؜‬ಒ܏ăසࡕ֪‫ۉڦڥ‬უྺ0 VLjሶ੗ీ๟‫ߌد‬ഗ‫܌‬ୟă
ኟ‫߾׉‬ፕ้Ljᆌॽ0ႀ෇ದዃस٪ഗዐ‫ڦ‬BO࿋Ljᅜ࠲Կኄ
ၵභ܏‫ୁۉ‬ă‫ୁۉ‬ᇸ߾ፕሞ‫ࡀ׉‬ਨ‫ܔ‬๼෇‫ۉ‬უ‫ాྷݔ‬Lj࣐
؋ഗਸഔă
घ૤‫!ୁۉ‬
AD7792/AD7793ాዃଇ߲೅ದ‫ॲ෉ڦ‬੗ದዃ࢛ୁᇸLjഄ๼
‫ୁۉ؜‬੗ཚࡗՊ‫ײ‬ยྺ10 μAĂ210 μAई1 mAăઠጲAVDD
‫ڦ‬ኄଇ߲ᇸ‫ୁۉ‬኱থ‫د‬๼዁ഗॲ‫ڦ‬IOUT1ईIOUT2ᆅগ
ాăኄၵ‫ୁۉ‬ᇸཚࡗIOस٪ഗዐ‫ڦ‬ದዃ࿋৊ႜ੦዆ă૧ᆩ
ದዃ࿋੗ᅜ๑ీ‫ୁۉ‬ᇸĂॽ‫ୁۉ‬ᇸ‫ڞ‬ၠIOUT1ईIOUT2ᅜ
त჋ስ‫ୁۉ‬ኵăኄၵ‫ୁۉ‬ᇸ੗ᅜᆩઠघ૤ྔևፆႠ‫ൃۉ‬ई
RTD‫ߌد‬ഗă
ೋዃ‫ۉ‬უ݀ิഗ!
AD7792/AD7793ాዃᅃ߲ೋዃ‫ۉ‬უ݀ิഗă໲੗ॽ໯჋๼
෇ཚ‫ۉڦ܋޶ڦڢ‬უೋዃ዁AVDD/2ăኄሞඤ‫ۉ‬౾‫ڦ‬ᆌᆩዐ
‫׉ݥ‬ᆶᆩLjᅺྺ‫ړ‬ሺᅮኵߛᇀ2้LjՂႷॽඤ‫ۉ‬౾ׂิ‫ڦ‬
‫ۉ‬უೋዃຕ‫ޚ‬኱ୁ‫ۉ‬უăኄ๟ՂႷ‫ڦ‬Ljᅺྺᅏ՗‫ٷݣ‬ഗႴ
ᄲᅃۨ‫ڦ‬ᇧଉLjᅜඓԍ‫ܔ‬থৎGNDईAVDD‫ڦ‬႑ࡽ৊ႜ৛
ඓ‫ڦ‬ገ࣑ă
ೋዃ‫ۉ‬უ݀ิഗᆯದዃस٪ഗዐ‫ڦ‬VBIAS1࿋ĂVBIAS0࿋
ࢅBOOST࿋ࠌཞ੦዆ăೋዃ‫ۉ‬უ݀ิഗ‫ڦ‬ฉ‫้ۉ‬क़ൽਦᇀ
޶ሜ‫ۉ‬ඹ‫ٷڦ‬ၭăྺକ๢ᆌডߛ‫޶ڦ‬ሜ‫ۉ‬ඹLjAD7792/
AD7793ದᆶᅃBOOST࿋ă‫ُړ‬࿋ዃ1้Ljೋዃ‫ۉ‬უ݀ิഗ
‫ߛ༵ࡼࠀڦ‬Lj੗‫ޗٷ‬໫‫܌‬ฉ‫้ۉ‬क़ă཮10၂๖କBOOSTྺ
0ࢅ1้Ljഗॲሞփཞ޶ሜ‫ۉ‬ඹཉॲူ‫ڦ‬ฉ‫้ۉ‬क़ă
‫ړ‬ೋዃ‫ۉ‬უ݀ิഗ੗ᆩ൐BOOST=0้LjAD7792/AD7793‫ڦ‬
ࠀࡼ༵ߛ40 μAǗ‫ืړ‬უࠀీ๑ీ้ഗॲࠀࡼ༵ߛ250 μAă
एጚ‫ۉ‬უ!
AD7792/AD7793़੗૧ᆩഴ෇๕1.17 Vएጚ‫ۉ‬უᇸྺADCࠃ
‫ۉ‬Ljᄺ੗ᅜ๑ᆩྔևएጚ‫ۉ‬უᇸă޿ഴ෇๕एጚ‫ۉ‬უᇸਏ
ᆶ‫گ‬ሯำĂ‫گ‬࿒೏༬ႠLj࿒೏‫ۆ‬႙ኵྺ4 ppm/°Că૧ᆩྔ
ևएጚ‫ۉ‬უᇸ้LjADC‫ڦ‬ཚ‫ڢ‬ਏᆶྜඇֶ‫ݴ‬๼෇ీ૰ăದ
ዃस٪ഗዐ‫ڦ‬REFSEL࿋ᆩᇀ჋ስAD7792/AD7793‫ڦ‬एጚ‫ۉ‬
უᇸăాևएጚ‫ۉ‬უᇸԥ჋ዐࢫLjएጚ‫ۉ‬უᇸᇑۙ዆ഗሞ
ഗॲాև၎૶ăREFINᆅগփኧ‫ా׼‬ևएጚ‫ۉ‬უᇸă
ኄၵֶ‫ݴ‬๼෇‫ࠌڦ‬ఇ‫ۉ‬უ‫ྺྷݔ‬GND዁AVDDăएጚ‫ۉ‬უ
๼෇๟࿮࣐؋๕‫ڦ‬ǗᅺُLjࡗ‫ڦٷ‬R-Cᇸፆੇࣷ‫ڞ‬ዂሺᅮ
ဃֶăՔ‫׬‬एጚ‫ۉ‬უREFIN(REFIN(+)−REFIN(−))ྺ2.5 VLj
‫ڍ‬AD7792/AD7793੗ᅜ֑ᆩ‫ڦ‬एጚ‫ۉ‬უ‫ྺྷݔڦ‬0.1V዁
AVDDăසࡕᆌᆩዐఇె๼෇‫ߌدڦ܋‬ഗ‫ڦ‬घ૤‫ۉ‬უईघ૤
‫ୁۉ‬ᄺྺഗॲ༵ࠃएጚ‫ۉ‬უLjሶ੗ᅜၩ‫أ‬घ૤ᇸዐ‫گ‬ೕሯ
ำ‫ڦ‬ᆖၚLjഄᇱᅺ๟ᆌᆩ๟Բ୲๕‫ڦ‬ăසࡕሞ‫ݥ‬Բ୲๕ᆌ
ᆩዐ֑ᆩAD7792/AD7793Ljᆌ๑ᆩ‫گ‬ሯำएጚ‫ۉ‬უᇸă
ሞAD7792/AD7793ዐLjॺᅱ֑ᆩ2.5Vएጚ‫ۉ‬უᇸLjԈઔ
ADR381ࢅADR391Ljܾኁ਩ྺ‫گ‬ሯำĂ‫ࡼࠀگ‬एጚ‫ۉ‬უ
ᇸăଷྔLjएጚ‫ۉ‬უ๼෇ీࠕ༵ࠃߛፆੇĂ‫ۯ‬ༀ޶ሜăᆯ
ᇀ߳एጚ‫ۉ‬უ๼෇‫ڦ‬๼෇ፆੇ๟‫ۯ‬ༀ‫ڦ‬Ljᅺُኄၵ๼෇‫܋‬
ฉ‫ۉڦ‬ፆᇑ‫ۉ‬ඹፇࢇ੗ీࣷ‫ڞ‬ዂ኱ୁሺᅮဃֶLjਏ༹ൽਦ
ᇀൻ‫ۯ‬एጚ‫ۉ‬უ๼෇‫ڦ‬႑ࡽᇸ‫ڦ‬๼‫؜‬ፆੇă
ᅜฉླྀ४‫ڦ‬एጚ‫ۉ‬უᇸ)૩සADR391*ཚ‫׉‬ਏᆶ‫گ‬๼‫؜‬ፆ
ੇLjᅺܸLjREFIN(+)ฉ੗ᅜ٪ሞඁ᳘‫ۉ‬ඹLj‫ڍ‬փࣷߴဣཥ
‫ټ‬ઠሺᅮဃֶăසࡕሞྔև‫ۉ‬ፆฉइൽएጚ๼෇‫ۉ‬უLjሶ
ᅪ࿆ጣएጚ‫ۉ‬უ๼෇‫܋‬ਏᆶ࢔‫ྔڦٷ‬ևᇸፆੇă‫ܔ‬ᇀኄዖ
‫ۉ‬ୟದዃLjփླྀ४ሞREFINᆅগฉ৊ႜྔևඁ᳘ă
ް࿋!
‫ܔ‬AD7792/AD7793૶Ⴤႀ෇32߲1Lj੗ᅜॽഗॲ‫ۉڦ‬ୟࢅ
‫ز‬ႜথ੨ް࿋ăኄᄣፔ੗ᅜॽ໯ᆶೌాस٪ഗް࿋ྺఐණ
ኵLjཞ้ް࿋இडĂຕጴ୳հഗࢅఇెۙ዆ഗăฉ‫้ࣷۉ‬
ጲ‫ۯ‬ኴႜް࿋֡ፕăഔ‫ްۯ‬࿋֡ፕࢫLjᆩࢽՂႷ‫ځڪ‬500 μs
֍ీ‫ݡ‬࿚ೌాस٪ഗăසࡕSCLK၍ୟฉ‫ڦ‬ሯำ‫ڞ‬ዂ‫ز‬ႜথ
੨ՎྺᅴօጒༀLjሶႴᄲኴႜް࿋ᅜ࣬ްཞօࠀీă
Rev. B | Page 25 of 32
AD7792/AD7793
AVDD॔੦ഗ
ADC‫أ‬କీࠕገ࣑ྔև‫ۉ‬უᅜྔLj࣏੗ᅜ॔੦AVDDᆅগฉ
‫ۉڦ‬უă‫ړ‬CH2዁CH0࿋਩ྺ1้LjAVDDᆅগฉ‫ۉڦ‬უሞ
ాևປ३6ԠLj໯इ‫ۉڦڥ‬უแेᇀΣ-Δۙ዆ഗኮฉLjഗॲ
֑ᆩ1.17 Vాևएጚ‫ۉ‬უൻ‫ۯ‬ᅜํ၄ఇຕገ࣑ăُ༬Ⴀ‫ڦ‬
ᆩ‫ت‬ሞᇀ੗ᅜ॔੦‫ۉ‬ᇸ‫ۉ‬უ‫ڦ‬հ‫ۯ‬ă
ၯጚ
AD7792/AD7793༵ࠃ4ዖၯጚఇ๕ăᆩࢽ੗ཚࡗ‫ܔ‬ఇ๕स
٪ഗా‫ڦ‬ఇ๕࿋৊ႜՊ‫ײ‬ઠ჋ስၯጚఇ๕ăၯጚఇ๕‫ݴ‬՚
ྺాևଭ‫ۉ‬ೝၯጚĂాև஢ଉ‫ײ‬ၯጚĂဣཥଭ‫ۉ‬ೝၯጚࢅ
ဣཥ஢ଉ‫ײ‬ၯጚLjኴႜၯጚ֡ፕ੗௽၂ই‫گ‬ᅺሯำׂܸิ
‫ڦ‬฿ۙဃֶࢅ஢ଉ‫ײ‬ဃֶă௅ْገ࣑ྜ‫ࢫׯ‬LjႴ૧ᆩADC
ၯጚस٪ഗ‫ܔ‬ADCገ࣑঳ࡕ৊ႜۙኝLj඗ࢫLjॽۙኝ঳ࡕ
ႀ෇ຕ਍स٪ഗăገ࣑঳ࡕံ३ඁ฿ۙၯጚဣຕLj඗ࢫ‫ױ‬
ᅜ஢ଉ‫ײ‬ဣຕă
ྺഔ‫ۯ‬ၯጚࠀీLjՂႷॽ๢‫ڦړ‬ኵႀ෇ఇ๕स٪ഗዐ‫ڦ‬
MD2዁MD0࿋ă‫ړ‬ၯጚྜ‫ࢫׯ‬Lj၎ᆌၯጚस٪ഗ‫ాڦ‬ඹࣷ
ԥ߸ႎLjጒༀस٪ഗዐ‫ڦ‬RDY࿋ԥዃ1LjDOUT/RDYᆅগ
Վྺ‫ۉگ‬ೝ)සࡕCSྺ‫ۉگ‬ೝ*LjAD7792/AD7793‫࣮ݓ‬዁੣
ှఇ๕ă
ాևଭ‫ۉ‬ೝई஢ଉ‫ײ‬ၯጚ೺क़Lj߳ଭ๼෇ࢅ஢ଉ‫ײ‬๼෇ሞ
ాևጲ‫૶ۯ‬থ዁ADC๼෇ᆅগă඗ܸLjဣཥၯጚሶᄲ൱ሞ
ഔ‫ۯ‬ၯጚఇ๕ኮമLjॽဣཥଭ‫ۉ‬ೝ‫ۉ‬უࢅဣཥ஢ଉ‫ۉײ‬უ
แेᇀADCăኄᄣీၩ‫أ‬ADC‫ྔڦ‬ևဃֶă
ٗ֡ፕฉઠੂLjၯጚ৽ၟଷᅃْADCገ࣑ăසႴᄲኴႜଭ
‫ۉ‬ೝၯጚLjՂႷሞኴႜ஢ଉ‫ײ‬ၯጚኮമኴႜଭ‫ۉ‬ೝၯጚă
ဣཥ෉ॲᆌ॔๫ጒༀस٪ഗዐ‫ڦ‬RDY࿋ईDOUT/RDYᆅ
গLjཚࡗᅃ߲୾კႾଚईዐ܏ൻ‫ײۯ‬Ⴞඓۨၯጚࢆ้঳
ຐă
ాև฿ۙၯጚࢅဣཥ฿ۙၯጚ਩Ⴔᄲࢾ‫ݯ‬ଇ߲ገ࣑ዜ೺ă
ᆯᇀADCԨวీ‫׼‬Ⴤၩ‫أ‬฿ۙLjُ้Lj࿮Ⴔኴႜాև฿ۙ
ၯጚă
ኴႜాև஢ଉ‫ײ‬ၯጚLj஢ଉ‫ײ‬๼෇‫ۉ‬უࣷጲ‫ۯ‬ᇑُၯጚ჋
ۨ‫ڦ‬ఇె๼෇‫܋‬၎૶ă‫ړ‬ሺᅮྺ1้Ljྜ‫ׯ‬ၯጚႴᄲ2߲ገ
࣑ዜ೺ă‫ܔ‬ᇀ߸ߛሺᅮLjኴႜ஢ଉ‫ײ‬ၯጚႴᄲ4߲ገ࣑ዜ
೺ăDOUT/RDYሞၯጚഔ‫ࢫۯ‬Վྺߛ‫ۉ‬ೝLjሞၯጚྜ‫ࢫׯ‬
࣬ް‫ۉگ‬ೝă
ၯጚ֡ፕྜ‫ࢫׯ‬LjADC‫ت‬ᇀ੣ှఇ๕ă֪‫ڦڥ‬஢ଉ‫ײ‬ဣຕ
ԍ٪ሞ໯჋ཚ‫ڦڢ‬஢ଉ‫ײ‬स٪ഗዐă‫ړ‬ሺᅮྺ128้Ljփ
ሎႹኴႜాև஢ଉ‫ײ‬ၯጚLj‫ڍ‬ሎႹኴႜဣཥ஢ଉ‫ײ‬ၯጚă
௅ْ߸߀ᅃ߲ཚ‫ڦڢ‬ሺᅮ้Lj‫ۼ‬Ⴔᄲኴႜ஢ଉ‫ײ‬ၯጚLjᅜ
Սॽ஢ଉ‫ײ‬ဃֶই዁ፌၭă
ాև஢ଉ‫ײ‬ၯጚኻీሞ༬ۨ߸ႎ໏୲ཉॲူኴႜă‫ړ‬ሺᅮ
ྺ1Ă2ࢅ4้Lj੗ᅜሞඪᅪ߸ႎ໏୲ཉॲူኴႜాև஢ଉ
‫ײ‬ၯጚă‫ڍ‬๟Lj‫ܔ‬ᇀ߸ߛሺᅮLjሶኻీሞ߸ႎ໏୲ၭᇀई
‫ڪ‬ᇀ16.7 HzĂ33.2 Hzࢅ50 Hz‫ڦ‬ཉॲူኴႜă඗ܸLj஢ଉ
‫ײ‬ဃֶփᅺ߸ႎ໏୲ܸ߀ՎLjᅺُLjሞగᅃ߸ႎ໏୲ཉॲ
ူኴႜ‫ڦ‬ၯጚ‫ܔ‬໯ᆶ߸ႎ໏୲਩ᆶၳ(्ยሺᅮईएጚ‫ۉ‬უ
ᇸԍ‫׼‬փՎ)ă
ྜ‫ׯ‬ဣཥ஢ଉ‫ײ‬ၯጚႴᄲ2߲ገ࣑ዜ೺Ljᇑሺᅮยዃ࿮
࠲ăဣཥ஢ଉ‫ײ‬ၯጚ੗ᅜሞ໯ᆶሺᅮࢅ໯ᆶ߸ႎ໏୲ཉॲ
ူኴႜăසႴཞ้ኴႜဣཥ฿ۙၯጚᇑဣཥ஢ଉ‫ײ‬ၯጚLj
ᆌሞഔ‫ۯ‬ဣཥ஢ଉ‫ײ‬ၯጚമኴႜဣཥ฿ۙၯጚă
থ‫ࢅں‬քਆ!
ᆯᇀADC‫ڦ‬ఇె๼෇ࢅएጚ๼෇਩ྺֶ‫ݴ‬๼෇LjᅺُLjఇ
ెۙ዆ഗዐ‫ܠڦ‬ຕ‫ۉ‬უ਩ྺࠌఇ‫ۉ‬უăഗॲ‫؜ڦ‬෥ࠌఇᅞ
዆Ⴀీ੗ၩ‫أ‬ኄၵ๼෇႑ࡽዐ‫ࠌڦ‬ఇሯำăຕጴ୳հഗ੗
ᅞ዆‫ۉ‬ᇸฉ‫ټ੻ڦ‬ሯำLj‫ڍ‬࿮݆ᅞ዆ఫၵೕ୲ྺۙ዆ഗ֑
ᄣೕ୲‫ڦ‬ኝຕԠ‫ڦ‬ሯำăଷྔLjຕጴ୳հഗ࣏ీࠕၩ‫أ‬ઠ
ጲఇెࢅएጚ๼෇‫ڦ܋‬ሯำLj‫ڍ‬മ༵๟ኄၵሯำᇸுᆶ๑
ఇెۙ዆ഗԏࢅăᅺُLjᇑ‫د‬ཥߛ‫ݴ‬Ր୲ገ࣑ഗ၎ԲLj
AD7792/AD7793ਏ ᆶ ߸ ഽ ‫ ੇ ڦ‬ሯ ీ ૰ ă ඗ ܸ Lj ᆯ ᇀ
AD7792/ AD7793‫ݴڦ‬Ր୲टߛLj‫ڍ‬ഄሯำ‫ۉ‬ೝ‫گ׉ݥ‬Ljᅺ
ُLjՂႷ৉ั‫ځܔ‬থ‫ࢅں‬քਆă
AD7792/AD7793໯ሞ‫ڦ‬ᆇຘ‫ۉ‬ୟӱሞยऺ้ᆌॽఇెև‫ݴ‬
ᇑຕጴև‫ݴݴ‬૗Ljժ၌዆ሞ‫ۉ‬ୟӱ‫ڦ‬༬ۨ൶ᇘాăྺํ၄
ፌॅೡԸLjথ‫֫ں‬ᅃӯᆌ৑ଉณ֑ᆩ์ਗ਼रຍă
ॺᅱॽAD7792/AD7793‫ڦ‬GNDᆅগ૶‫ڟ‬ဣཥ‫ڦ‬AGND֫ă
࿮ஃ֑ൽࢆዖքਆLjᆩࢽ਩ՂႷጀᅪࡀࣄဣཥዐ‫࣮ڦୁۉ‬
ୁୟ০Ljඓԍ໯ᆶ‫ୁ࣮ڦୁۉ‬ୟ০਩৑੗ీ੍ৎ‫ٳڟୁۉ‬
ణ‫ںڦ‬໯ঢ়ࡗ‫ڦ‬ୟ০ăൎကഽ዆ຕጴ‫ࡗୁୁۉ‬քਆ‫ڦ‬
AGNDև‫ݴ‬ă
Rev. B | Page 26 of 32
AD7792/AD7793
ॽAD7792/AD7793‫ڦ‬থ‫ݣ֫ں‬ሞഄူ‫ݛ‬Lj੗ᅜ‫ݞ‬ኹሯำ᳘
ࢇăAD7792/AD7793‫ۉڦ‬ᇸ၍ୟᆌ֑ᆩ৑੗ీ੻‫ڦ‬ጽ၍Lj
ᅜ༵ࠃ‫گ‬ፆੇୟ০Ă३ၭ‫ۉ‬ᇸ၍ୟฉ‫ڦ‬றِሯำၳᆌăྺ
Ն௨ၠ‫ۉ‬ୟӱฉ‫ڦ‬ഄ໲և‫ޖݴ‬พሯำLjᆌ૧ᆩຕጴ‫ں‬ೡԸ
้ዓ႑ࡽ‫੺ڪ‬໏ਸ࠲႑ࡽLj൐ԍኤ้ዓ႑ࡽᇺ૗ఇె๼
෇ă
Ն௨ຕጴ႑ࡽᇑఇె႑ࡽ঍۠ă‫ۉ‬ୟӱ၎‫ܔ‬ଇ֨ฉ‫ڦ‬ጽ၍
ᆌ‫ړ‬Եُ‫ؽ‬኱ăኄᄣፔᆶዺᇀই‫ۉگ‬ୟӱฉ‫ڦ‬ઍཚၳᆌă
ྲ‫ټ‬၍रຍሞణമੂઠ๟ፌॅ჋ስLj‫ڍ‬ኄዖरຍ‫ܔ‬ᇀມ௬
‫ۉ‬ୟӱ࿄Ղጺ๟੗ႜă֑ᆩኄዖरຍ้Lj‫ۉ‬ୟӱ‫ڦ‬ᇮॲ֨
ጆᆩᇀথ‫֫ں‬Lj႑ࡽጽ၍ሶքยሞࡰথ֨ă
๑ᆩߛ‫ݴ‬Ր୲ADC้Ljଆࡻ‫ڦ‬ඁ᳘ๆ‫ݴ‬ዘᄲăᆌॽ10 μF᮳
‫ۉ‬ඹᇑ0.1 μF༩ٍ‫ۉ‬ඹժ૴LjॽAVDDඁ᳘‫ڟ‬GNDăཞ้ᆌ
ॽ10 μF᮳‫ۉ‬ඹᇑ0.1 μF༩ٍ‫ۉ‬ඹժ૴LjॽDVDDඁ᳘‫ڟ‬ဣཥ
‫ڦ‬DGND֫Ǘኄ้LjဣཥAGND‫ڟ‬DGND‫૶ڦ‬থᆌ੍ৎ
AD7792/AD7793ă
ྺ๑ኄၵඁ᳘ᇮॲࣩ݀ഄፌॅႠీLjᆌॽഄ৑੗ీ੍ৎഗ
ॲLjፌࡻॽഄ৆ཌྷഗॲăᆌ૧ᆩ0.1 μF༩ٍ‫ۉ‬ඹॽ໯ᆶஇड
ႊೌඁ᳘‫ڟ‬DGNDă
Rev. B | Page 27 of 32
AD7792/AD7793
ᆌᆩ႑တ!
AD7792/AD7793਩ྺ‫ׯگ‬ԨĂߛ‫ݴ‬Ր୲ఇຕገ࣑ഗăఇຕ
ገ࣑ࠀీᆯΣ-Δ঳ࠓ༵ࠃLjᅺُഗॲ‫ੇڦ‬ሯీ૰࢔ഽLj‫ݥ‬
‫׉‬๢ࢇ‫ߌد‬ഗ֪ଉĂ߾ᄽࢅࡗ‫ײ‬੦዆ᆌᆩă
‫ڦ‬ሯำᆖၚă‫ړ‬ᅏ՗‫ٷݣ‬ഗ੗ᆩ้LjAD7792/AD7793‫ࠌڦ‬
ఇ‫ۉ‬უ‫ॽྷݔ‬໫ၭăᅺُLjೋዃ‫ۉ‬უิ‫ׯ‬ഗ੗༵ࠃࠌఇ‫ۉ‬
უLjᅜՍॽඤ‫ۉ‬౾ิ‫ۉڦׯ‬უ‫ڦ‬ፌߛೋუኵ‫ڟٳ‬AVDD/2ă
૧ᆩඤ‫ۉ‬౾֪ଉ࿒‫܈‬
ཚࡗ཮ዐ‫ڦ‬ඤ௺‫ۉ‬ፆీࠕํ၄ូ‫܋‬ց‫׋‬ăೌాघ૤‫ྺୁۉ‬
޿ඤ௺‫ۉ‬ፆ༵ࠃघ૤ăُྔLjូ‫֪܋‬ଉ‫ڦ‬एጚ‫ۉ‬უઠጲᅃ
߲ᇑ޿ඤ௺‫ۉ‬ፆ‫ڦ૴ز‬৛௢‫ۉ‬ፆăᆯُ੗ํ၄Բ୲๕֪
ଉLjሞُ൧઄ူLjघ૤‫ڦୁۉ‬հ‫ۯ‬փࣷ‫֪ܔ‬ଉׂิᆖၚ(֪
ଉ঳ࡕ๟৛௢֖੊‫ۉ‬ፆኵᇑඤ௺‫ۉ‬ፆኵ‫ڦ‬Բኵ)ă
཮20๟ᅃ߲ඤ‫ۉ‬౾ᇑAD7792/AD7793૶থ‫ڦ‬๖ᅪ཮ăሞඤ
‫ۉ‬౾ᆌᆩዐLjᆯඤ‫ۉ‬౾ׂิ‫ۉڦ‬უ‫֪ڦ‬ଉኵᇑਨ‫ܔ‬एጚ‫ۉ‬
უኵ‫װ‬Բ૩ՎࣅǗᅺُLjాևएጚ‫ۉ‬უ੗ᆩᇀ޿ገ࣑ăូ
‫֪܋‬ଉႴᄲ૧ᆩԲ୲๕ದዃǗᅺُLjႴᄲ૧ᆩྔևएጚ‫ۉ‬
უᇸă
ᆯᇀઠጲඤ‫ۉ‬౾‫ڦ‬႑ࡽ࢔ෑLjAD7792/AD7793ాዃᅏ՗‫ݣ‬
‫ٷ‬ഗॽ‫޿ٷݣ‬႑ࡽăᆯᇀ๼෇ཚ‫ڢ‬ਏᆶ࣐؋ࠀీLj੗ॽ‫ٷ‬
ඁ᳘‫ۉ‬ඹዃᇀമ‫܋‬LjᅜՍᇀၩ‫أ‬੗ీ‫؜‬၄ሞඤ‫ۉ‬౾ᆅগฉ
GND
AVDD
VBIAS
REFIN(+) REFIN(–)
BAND GAP
REFERENCE
AIN1(+)
AIN1(–)
GND
AVDD
R C
AIN2(+)
MUX
BUF
AIN2(–)
SERIAL
INTERFACE
AND
CONTROL
LOGIC
Σ-Δ
ADC
IN-AMP
REFIN(+)
RREF
GND
REFIN(–)
AVDD
DOUT/RDY
DIN
SCLK
CS
DVDD
INTERNAL
CLOCK
AD7792/AD7793
IOUT2
CLK
཮ 20. ૧ᆩAD7792/AD7793৊ႜඤ‫ۉ‬౾֪ଉ
Rev. B | Page 28 of 32
04855-012
THERMOCOUPLE
JUNCTION R
AD7792/AD7793
૧ᆩRTD֪ଉ࿒‫܈‬
গ໯ᆩ֌ଙत‫܈׊‬਩ᆌ၎ཞDžLjIOUT1ᇑIOUT2೅ದLj
RL2‫ڦ‬ဃֶ‫ۉ‬უᇑRL1‫ڦ‬ဃֶ‫ۉ‬უ၎‫ڪ‬Lj൐AIN1(+)ᆅগᇑ
AIN1(–)ᆅগኮक़࿮ဃֶ‫ۉ‬უăRL3ฉॽׂิଇԠ‫ۉ‬უLjᆯ
ᇀ໯ׂิ‫ۉڦ‬უྺࠌఇ‫ۉ‬უLjᅺُLjփ٪ሞ‫ۉ‬უဃֶă૧
ᆩฉຎ೅ದ‫ୁۉ‬ᇸኮᅃLjᄺ੗ᅜྺAD7792/AD7793༵ࠃए
ጚ‫ۉ‬უă໲‫ิׂڦ‬Ⴔᄲᆩ‫ڟ‬ᅃ߲৛௢‫ۉ‬ፆ൐๢ᆩᇀADC‫ڦ‬
ֶ‫ݴ‬एጚ‫ۉ‬უᆅগăኄᅃ‫ݛ‬ӄ੗ᅜඓԍఇె‫ۉ‬უ๼෇‫ྷݔ‬
ߵ਍एጚ‫ۉ‬უ‫װ‬Բ૩Վࣅăएጚ‫ۉ‬უ‫ڦ‬Վࣅ੗ց‫׋‬ඪࢆᅺ
घ૤‫ڦୁۉ‬࿒೎ܸ‫ڞ‬ዂ‫ڦ‬ఇె๼෇‫ۉ‬უဃֶă
ྺ‫ڟٳ‬ፌॅෙ၍๕RTDದዃLjႴᄲᆩ‫ڟ‬ଇ߲ྜඇ೅ದ‫ۉڦ‬
ୁᇸăAD7792/AD7793ਏԢଇ߲೅ದଆࡻ‫ୁۉڦ‬ᇸLjᅺ
ُLj໲‫׉ݥ‬๢ᆩᇀฉຎᆌᆩă཮21၂๖‫؜‬ᅃ߲ෙ၍๕ದ
ዃăሞ޿ದዃዐLjසࡕኻ๑ᆩᅃୟ‫ୁۉ‬Ljᆅ၍‫ۉ‬ፆॽׂิ
ဃֶLjᆯᇀघ૤‫ୁୁۉ‬ঢ়RL1LjॽሞAIN1(+)ᆅগࢅAIN1
(–)ᆅগኮक़ׂิ‫ۉ‬უဃֶăሞ໯௮ຎ‫ݛڦ‬ӄዐLj‫߲ܾڼ‬
RTD‫ୁۉ‬ᇸᆩᇀց‫׋‬ᅺघ૤‫ୁୁۉ‬ঢ়RL1໯ׂิ‫ڦ‬ဃֶă
඗ࢫLj‫߲ܾڼ‬RTD‫ୁୁۉ‬ঢ়RL2ă्ยRL1ࢅRL2၎‫߳)ڪ‬ᆅ
GND
AVDD
REFIN(+) REFIN(–)
BAND GAP
REFERENCE
IOUT1
RTD
RL2
RL3
AIN1(+)
GND
AVDD
AIN1(–)
BUF
IOUT2
SERIAL
INTERFACE
AND
CONTROL
LOGIC
Σ- Δ
ADC
IN-AMP
DOUT/RDY
DIN
SCLK
CS
REFIN(+)
GND
RREF
REFIN(–)
INTERNAL
CLOCK
AD7792/AD7793
CLK
཮21. ૧ᆩAD7792/AD7793‫ڦ‬RTDᆌᆩ
Rev. B | Page 29 of 32
DVDD
04855-013
RL1
AD7792/AD7793
ྔႚ؅٫
5.10
5.00
4.90
16
9
4.50
4.40
4.30
6.40
BSC
1
8
PIN 1
1.20
MAX
0.15
0.05
0.20
0.09
0.30
0.19
0.65
BSC
COPLANARITY
0.10
8°
0°
SEATING
PLANE
0.75
0.60
0.45
COMPLIANT TO JEDEC STANDARDS MO-153-AB
཮22. 16ᆅগ‫ג‬ԋ৆໫ၭ႙‫ހ‬ጎ[TSSOP]
(RU-16)
؅٫‫ڇ‬࿋ǖmm
۩ࠔኸళ
႙ࡽ!
AD7792BRU
AD7792BRU-REEL
AD7792BRUZ 1
AD7792BRUZ-REEL1
AD7793BRU
AD7793BRU-REEL
AD7793BRUZ1
AD7793BRUZ-REEL1
EVAL-AD7792EBZ1
EVAL-AD7793EBZ1
1
࿒‫!ྷݔ܈‬
–40°C ዁ +105°C
–40°C ዁ +105°C
–40°C ዁ +105°C
–40°C ዁ +105°C
–40°C ዁ +105°C
–40°C዁ +105°C
–40°C ዁ +105°C
–40°C ዁ +105°C
‫ހ‬ጎ௮ຎ!
16ᆅগTSSOP‫ހ‬ጎ
16ᆅগTSSOP‫ހ‬ጎ
16ᆅগTSSOP‫ހ‬ጎ
16ᆅগTSSOP‫ހ‬ጎ
16ᆅগTSSOP‫ހ‬ጎ
16ᆅগTSSOP‫ހ‬ጎ
16ᆅগTSSOP‫ހ‬ጎ
16ᆅগTSSOP‫ހ‬ጎ
ೠࠚӱ
ೠࠚӱ
Z = ‫ࢇޙ‬RoHSՔጚ‫ڦ‬ग़ඹഗॲă
Rev. B | Page 30 of 32
‫ހ‬ጎ჋ၜ!!
RU-16
RU-16
RU-16
RU-16
RU-16
RU-16
RU-16
RU-16
AD7792/AD7793
ጀ๥
Rev. B | Page 31 of 32
AD7792/AD7793
ጀ๥
©2004–2007 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D04855-0-3/07(B)
Rev. B | Page 32 of 32