中文数据手册

‫ۉڇ‬ᇸĂֶ‫ݴ‬18࿋
ADCൻ‫ۯ‬ഗ
ADA4941-1
‫ۉڇ‬ᇸຕ਍֑णဣཥ
ᅏഗᅏ՗
ࡗ‫ײ‬੦዆
‫ۉࠃ׾ۉ‬ဣཥ
ᅅଐᅏഗ
1
8
IN
REF
2
7
DIS
V+
3
6
V–
OUT+
4
5
OUT–
཮1
–65
–70
–75
VO = 6V p-p
–80
–85
–90
–95
–100
–105
–110
VO = 2V p-p
–115
–120
HD2
HD3
–125
–130
–135
–140
0.1
HD3
HD2
1
10
100
FREQUENCY (kHz)
1000
05704-045
ᆌᆩ
FB
–60
DISTORTION (dBc)
‫܋ڇ‬ገֶ‫ݴ‬ገ࣑ഗ
‫؜‬෥‫ڦ‬၍Ⴀ‫܈‬
! ฿ኈǖ−110 dBc(100 KHzLjVOdm = 2 V‫ރރ‬ኵ)
‫گ‬ሯำǖ10.2 nV/√Hz(ችࢇ‫ڟ‬๼‫܋؜‬LjG = 2)
ट‫ࡼࠀگ‬ǖ2.2 mA(3 V‫ۉ‬ᇸ)
ߛ๼෇ፆੇǖ24 MΩ
ᆩࢽ੗ۙሺᅮ
ߛ໏ǖ−3 dB‫ྺ੻ټ‬31 MHz (G = +2)
0.005%੺໏ॺ૬้क़ǖ300 nsDŽ2 Vօ৊Dž
‫گ‬฿ۙǖ0.8 mV(ፌ‫ٷ‬ኵ)(ችࢇ‫ڟ‬๼‫܋؜‬LjG = 2)
ࡆ‫ࡆڟ‬๼‫؜‬
্ᆩ༬Ⴀ
੻‫ۉ‬ᇸ‫ۉ‬უ‫ྷݔ‬ǖ2.7 V዁12 V
֑ᆩবู੣क़‫ڦ‬3 mm x 3 mm LFCSP‫ހ‬ጎ
05704-001
ࠀీ઀཮
༬Ⴀ
཮2. փཞ๼‫ူ܈ޗ؜‬฿ኈᇑೕ୲‫࠲ڦ‬ဣ
߁ຎ
ADA4941-1๟ᅃ੼‫ࡼࠀگ‬Ă‫گ‬ሯำֶ‫ݴ‬ൻ‫ۯ‬ഗLjᆩᇀൻ‫ۯ‬
ࠀࡼ௺ߌဣཥዐፌߛ18࿋‫ڦ‬ADCă໲֑ᆩᅟᇀ๑ᆩ‫܋ڇڦ‬
ገֶ‫ݴ‬ದዃLj࿮Ⴔྔևᇮॲ৽ీइ‫ڥ‬ሺᅮྺ2ሺे‫ۉ‬ፆ‫ݒ‬
ઍྪஏՍ੗ํ၄‫ٷ‬ᇀ2‫ڦ‬ሺᅮLjཞ้༵ࠃൻ‫ݴߛۯ‬Ր୲
ADC໯Ⴔ‫گڦ‬฿ኈࢅߛ႑ሯԲ(SNR)‫ڪ‬ዘᄲ༬Ⴀă
ADA4941-1ਏᆶ੻๼෇‫ۉ‬უ‫֑(ݔ‬ᆩ5 V‫ۉڇ‬ᇸ้0 V዁3.9 V)Ă
ࡆ‫ࡆڟ‬๼‫؜‬Ăߛ๼෇ፆੇࢅᆩࢽ੗ۙሺᅮLj੗ᆩᇀൻ‫ۯ‬Ԉ
ઔ‫ۉࠃ׾ۉ‬ยԢࢅ‫ۉڇ‬ᇸຕ਍֑णဣཥ‫߳ڪ‬ዖ‫ࡼࠀگ‬ᆌᆩ
ዐ‫ۉڇڦ‬ᇸĂֶ‫ݴ‬๼෇ADCă
ADA4941-1‫׉ݥ‬๢ࢇൻ‫ۯ‬AD7687ĂAD7690ࢅAD7691‫ڪ‬16
࿋ࢅ18࿋PulSAR® ADCă
ADA4941-1֑ᆩADIࠅິ‫ڦ‬ጆᆶ‫پܾڼ‬XFCB߾ᅝ዆ሰLj๑
‫ٷݣ‬ഗ੗ᅜሞ‫ۉگ‬ᇸ‫ୁۉ‬ཉॲူํ၄18࿋Ⴀీă
AD4941-1༵ࠃ8ᆅগၭ႙LFCSP‫ހ‬ጎࢅ8ᆅগՔጚSOIC‫ހ‬
ጎLj‫߾ۨܮ‬ፕ࿒‫ྺྷݔ܈‬−40°C዁+125°Cકቛ߾ᄽ࿒‫ݔ܈‬
ྷă
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.
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Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113 ©2006–2010 Analog Devices, Inc. All rights reserved.
ADIዐ࿔Ӳຕ਍๮֩๟ᆈ࿔Ӳຕ਍๮֩‫ڦ‬ᅳ࿔Lj৤൩ଌ঴‫݋‬ᅳዐ੗ీ٪ሞ‫ڦ‬ᇕჾፇኯई‫݋‬ᅳ‫ٱ‬ဃLjADIփ‫݋ܔ‬ᅳዐ٪ሞ‫ֶڦ‬ᅴईᆯׂُิ‫ٱڦ‬ဃ޶ሴăසႴඓණඪࢆَᇕ‫ڦ‬ጚඓႠLj൩֖੊ADI༵ࠃ
‫ڦ‬ፌႎᆈ࿔Ӳຕ਍๮֩ă
ADA4941-1
ణ୤
༬Ⴀ ................................................................................................... 1
!
๼‫ۉ؜‬უሯำ ....................................................................... 17
ᆌᆩ ................................................................................................... 1
!
ೕ୲ၚᆌᇑԿ࣍ሺᅮ .......................................................... 19
ࠀీ઀཮ ........................................................................................... 1
ᆌᆩ ................................................................................................. 20
߁ຎ ................................................................................................... 1
!
߁ຎ ......................................................................................... 20
Ⴊ۩૦๏ ........................................................................................... 2
!
๑ᆩREFᆅগ ........................................................................ 20
रຍࡀ߭ ........................................................................................... 3
!
ాև‫ݒ‬ઍྪஏࠀࡼ .............................................................. 20
ਨ‫ܔ‬ፌ‫ۨܮٷ‬ኵ ............................................................................. 6
!
্ᆩ༬Ⴀ ................................................................................ 20
!
ඤፆ ........................................................................................... 6
!
ཁे3ट‫ۅ‬Sallen-Key୳հഗ .............................................. 21
ESDয়ߢ ................................................................................... 6
!
ൻ‫ۯ‬AD7687 ADC ................................................................ 22
ᆅগದዃࢅࠀీ௮ຎ ..................................................................... 7
−2ሺᅮದዃ ........................................................................... 22
‫ۆ‬႙߾ፕ༬Ⴀ .................................................................................. 8
ྔႚ؅٫ ........................................................................................ 23
߾ፕᇱ૙ ........................................................................................ 15
!
!
एԨ߾ፕᇱ૙ ....................................................................... 26
!
኱ୁဃֶऺ໙ ....................................................................... 16
Ⴊ۩૦๏
2009౎3ሆ—Ⴊ۩Ӳ0዁Ⴊ۩ӲA
߸߀ሺᅮဃֶ೏ᅎ֖ຕ)՗1* ....................................................... 3
߸߀ሺᅮဃֶ೏ᅎ֖ຕ)՗2* ....................................................... 4
߸߀ሺᅮဃֶ೏ᅎ֖ຕ)՗3* ....................................................... 5
߸ႎྔႚ؅٫ ................................................................................ 23
2006౎4ሆ—Ⴊ۩Ӳ0ǖ‫؛‬๔Ӳ
Rev. B | Page 2 of 24
۩ࠔኸళ ................................................................................ 23
ADA4941-1
रຍࡀ߭!
‫ݥأ‬ଷᆶຫ௽LjTA = 25°CLjVS = 3 VLjOUT+থFB (G = 2)LjRL, dm = 1 kΩLjREF = 1.5 Vă
՗1
֖ຕ
‫ۯ‬ༀႠీ
-3 dB‫੻ټ‬
! ࡗൻ࣬ް้क़
! უӦ୲
0.005%ॺ૬้क़
ሯำ/฿ኈႠీ
ၿհ฿ኈ
RTO‫ۉ‬უሯำ
๼෇‫ୁۉ‬ሯำ
኱ୁႠీ!
! ֶ‫ݴ‬๼‫؜‬฿ۙ‫ۉ‬უ!
! ֶ‫ݴ‬๼෇฿ۙ‫ۉ‬უ೏ᅎ!
! ‫܋ڇ‬๼෇฿ۙ‫ۉ‬უ!
! ‫܋ڇ‬๼෇฿ۙ‫ۉ‬უ೏ᅎ!
! ๼෇ೋዃ‫!ୁۉ‬
! ๼෇฿ۙ‫!ୁۉ‬
! ሺᅮ!
! ሺᅮဃֶ!
! ሺᅮဃֶ೏ᅎ!
๼෇༬Ⴀ
๼෇‫ۉ‬ፆ
๼෇‫ۉ‬ඹ
๼෇ࠌఇ‫ۉ‬უ‫ྷݔ‬
ࠌఇᅞ዆Բ(CMRR)
๼‫؜‬༬Ⴀ!
! ๼‫ۉ؜‬უӦ‫!ޗ‬
! ๼‫!ୁۉ؜‬
! ඹႠ޶ሜൻ‫!ۯ‬
‫ۉ‬ᇸ
! ߾ፕ‫ྷݔ‬
! ৢༀ‫ୁۉ‬
! ৢༀ‫্—ୁۉ‬ᆩ
! ‫ۉ‬ᇸᅞ዆Բ(PSRR)
+PSRR
−PSRR
্ᆩDŽਸ࠲ࠀీDž
DIS๼෇‫ۉ‬უ
DIS๼෇‫ୁۉ‬
ཉॲ!
ፌၭኵ! ‫ۆ‬႙ኵ!
VO = 0.1 V‫ރރ‬ኵ
VO = 2.0 V‫ރރ‬ኵ
+࣬ް/−࣬ް
VO = 2 Vօ৊
VO = 2 V‫ރރ‬ኵօ৊
21
4.6
fC = 40 kHz, VO = 2 V‫ރރ‬ኵ, HD2/HD3
fC = 100 kHz, VO = 2 V‫ރރ‬ኵ, HD2/HD3
fC = 1 MHz, VO = 2 V‫ރރ‬ኵ, HD2/HD3
f = 100 kHz
f = 100 kHz
‫ٷݣ‬ഗA1ई‫ٷݣ‬ഗA2
INࢅREF
INࢅREF
(+OUT − −OUT)/(IN − REF)
1.98
−1
30
6.5
320/650
22
300
MHz
MHz
ns
V/μs
ns
−116/−112
−101/−98
−75/−71
10.2
1.6
dBc
dBc
dBc
nV/√Hz
pA/√Hz
0.2
1.0
0.1
0.3
3
0.1
2.00
1
INࢅREF
INࢅREF
ፌ‫ٷ‬ኵ! ‫ڇ‬࿋
0.8
0.4
4.5
2.01
+1
5
24
1.4
CMRR = VOS, dm/VCM, VREF = VIN, VCM= 0.2 V዁1.9 V, G = 4
0.2
81
߳‫܋ڇ‬๼‫؜‬LjG = 4
±2.90
20%ࡗ؋LjVO, dm = 200 mV‫ރރ‬ኵ
105
MΩ
pF
V
dB
±2.95
25
20
V
mA
pF
1.9
2.7
2.2
10
PSRR = VOS, dm/ΔV S, G = 4
্ᆩLjDIS = ߛ
๑ీLjDIS = ‫گ‬
্ᆩLjDIS = ߛ
๑ీLjDIS = ‫گ‬
ਸഔ้क़
࠲Կ้क़
Rev. B | Page 3 of 24
86
86
mV
μV/°C
mV
μV/°C
μA
μA
V/V
%
ppm
12
2.4
16
V
mA
μA
100
110
dB
dB
≥1.5
≤1.0
5.5
4
0.7
30
V
V
μA
μA
μs
μs
8
6
ADA4941-1
‫ݥأ‬ଷᆶຫ௽LjTA = 25°CLjVS = 5 VLjOUT+থFB (G = 2)LjRL, dm = 1 kΩLjREF = 2.5 Vă
Table 2.
֖ຕ
‫ۯ‬ༀႠీ
-3 dB‫੻ټ‬
! ࡗൻ࣬ް้क़
! უӦ୲
0.005%ॺ૬้क़
ሯำ/฿ኈႠీ
! ၿհ฿ኈ
RTO‫ۉ‬უሯำ
! ๼෇‫ୁۉ‬ሯำ
኱ୁႠీ
! ֶ‫ݴ‬๼‫؜‬฿ۙ‫ۉ‬უ
! ֶ‫ݴ‬๼෇฿ۙ‫ۉ‬უ೏ᅎ
! ‫܋ڇ‬๼෇฿ۙ‫ۉ‬უ
! ‫܋ڇ‬๼෇฿ۙ‫ۉ‬უ೏ᅎ
! ๼෇ೋዃ‫ୁۉ‬
! ๼෇฿ۙ‫ୁۉ‬
! ሺᅮ
! ሺᅮဃֶ
! ሺᅮဃֶ೏ᅎ
๼෇༬Ⴀ
! ๼෇‫ۉ‬ፆ
! ๼෇‫ۉ‬ඹ
! ๼෇ࠌఇ‫ۉ‬უ‫ྷݔ‬
! ࠌఇᅞ዆Բ(CMRR)
๼‫؜‬༬Ⴀ
! ๼‫ۉ؜‬უӦ‫ޗ‬
! ๼‫ୁۉ؜‬
! ඹႠ޶ሜൻ‫ۯ‬
‫ۉ‬ᇸ
߾ፕ‫ྷݔ‬
ৢༀ‫ୁۉ‬
ৢༀ‫্—ୁۉ‬ᆩ
‫ۉ‬ᇸᅞ዆Բ(PSRR)
+PSRR
-PSRR
্ᆩDŽਸ࠲ࠀీDž
DIS๼෇‫ۉ‬უ
DIS๼෇‫ୁۉ‬
ཉॲ!
ፌၭኵ! ‫ۆ‬႙ኵ!
VO = 0.1 V‫ރރ‬ኵ
VO = 2.0 V‫ރރ‬ኵ
+࣬ް/-࣬ް
VO = 2 Vօ৊
VO = 6 V‫ރރ‬ኵօ৊
22
4.9
fC = 40 MHz, VO = 2 V‫ރރ‬ኵ, HD2/HD3
fC = 100 MHz, VO = 2 V‫ރރ‬ኵ, HD2/HD3
fC = 1 MHz, VO = 2 V‫ރރ‬ኵ, HD2/HD3
f = 100 kHz
f = 100 kHz
‫ٷݣ‬ഗA1ई‫ٷݣ‬ഗA2
INࢅREF
INࢅREF
(+OUT - -OUT)/(IN - REF)
1.98
−1
31
7
200/600
24.5
610
MHz
MHz
ns
V/μs
ns
−118/−119
−110/−112
−83/−73
10.2
1.6
dBc
dBc
dBc
nV/√Hz
pA/√Hz
0.2
1.0
0.1
0.3
3
0.1
2
1
INࢅREF
INࢅREF
ፌ‫ٷ‬ኵ! ‫ڇ‬࿋
0.8
0.4
4.5
2.01
+1
5
24
1.4
CMRR = VOS, dm/VCM, VREF = VIN,VCM = 0.2 V዁3.9 V, G = 4
0.2
84
߳‫܋ڇ‬๼‫؜‬LjG = 4
±4.85
20%ࡗ؋LjVO, dm = 200 mV‫ރރ‬ኵ
106
MΩ
pF
V
dB
±4.93
25
20
V
mA
pF
3.9
2.7
2.3
12
PSRR = VOS, dm/ΔV S, G = 4
্ᆩLjDIS = ߛ
๑ీLjDIS = ‫گ‬
্ᆩLjDIS = ߛ
๑ీLjDIS = ‫گ‬
ਸഔ้क़
࠲Կ้क़
Rev. B | Page 4 of 24
87
87
mV
μV/°C
mV
μV/°C
μA
μA
V/V
%
ppm
12
2.6
20
V
mA
μA
100
110
dB
dB
≥1.5
≤1.0
5.5
4
0.7
30
V
V
μA
μA
μs
μs
8
6
ADA4941-1
‫ݥأ‬ଷᆶຫ௽LjTA = 25°CLjVS = ±5 VLjOUT+থFB (G = 2)LjRL, dm = 1 kΩLjREF = 0 Vă
՗3
֖ຕ
‫ۯ‬ༀႠీ
-3 dB‫੻ټ‬
! ࡗൻ࣬ް้क़
! უӦ୲
0.005%ॺ૬้क़
ሯำ/฿ኈႠీ
! ၿհ฿ኈ
RTO‫ۉ‬უሯำ
! ๼෇‫ୁۉ‬ሯำ
኱ୁႠీ!
! ֶ‫ݴ‬๼‫؜‬฿ۙ‫ۉ‬უ!
! ֶ‫ݴ‬๼෇฿ۙ‫ۉ‬უ೏ᅎ!
! ‫܋ڇ‬๼෇฿ۙ‫ۉ‬უ!
! ‫܋ڇ‬๼෇฿ۙ‫ۉ‬უ೏ᅎ!
! ๼෇ೋዃ‫!ୁۉ‬
! ๼෇฿ۙ‫!ୁۉ‬
! ሺᅮ!
! ሺᅮဃֶ!
! ሺᅮဃֶ೏ᅎ!
๼෇༬Ⴀ
! ๼෇‫ۉ‬ፆ
! ๼෇‫ۉ‬ඹ
! ๼෇ࠌఇ‫ۉ‬უ‫ྷݔ‬
! ࠌఇᅞ዆Բ(CMRR)
๼‫؜‬༬Ⴀ!
! ๼‫ۉ؜‬უӦ‫!ޗ‬
! ๼‫!ୁۉ؜‬
! ඹႠ޶ሜൻ‫!ۯ‬
‫ۉ‬ᇸ
! ߾ፕ‫ྷݔ‬
! ৢༀ‫ୁۉ‬
! ৢༀ‫্—ୁۉ‬ᆩ
! ‫ۉ‬ᇸᅞ዆Բ(PSRR)
+PSRR
−PSRR
্ᆩDŽਸ࠲ࠀీDž
DIS๼෇‫ۉ‬უ
DIS๼෇‫ୁۉ‬
ཉॲ!
ፌၭኵ!
‫ۆ‬႙ኵ!
ፌ‫ٷ‬ኵ! ‫ڇ‬࿋
VO = 0.1 V‫ރރ‬ኵ
VO = 2.0 V‫ރރ‬ኵ
+࣬ް/−࣬ް
VO = 2 Vօ৊
VO = 12 V‫ރރ‬ኵօ৊
23
5.2
32
7.5
200/650
26
980
MHz
MHz
ns
V/μs
ns
−118/−119
−109/−112
−84/−75
10.2
1.6
dBc
dBc
dBc
nV/√Hz
pA/√Hz
fC = 40 kHz, VO = 2 V‫ރރ‬ኵ, HD2/HD3
fC = 100 kHz, VO = 2 V‫ރރ‬ኵ, HD2/HD3
fC = 1 MHz, VO = 2 V‫ރރ‬ኵ, HD2/HD3
f = 100 kHz
f = 100 kHz
‫ٷݣ‬ഗA1ई‫ٷݣ‬ഗA2
INࢅREF
INࢅREF
(+OUT − −OUT)/(IN − REF)
1.98
−1
0.2
1.0
0.1
0.3
3
0.1
2
1
INࢅREF
INࢅREF
0.8
0.4
4.5
2.01
+1
5
24
1.4
CMRR = VOS, dm/VCM, VREF = VIN,
VCM= -4.8 V዁+3.9 V, G = 4
߳‫܋ڇ‬๼‫؜‬LjG = 4
−4.8
85
VS − 0.25
20%ࡗ؋LjVO, dm = 200 mV‫ރރ‬ኵ
105
MΩ
pF
V
dB
VS ± 0.14
25
20
V
mA
pF
+3.9
2.7
2.5
15
PSRR = VOS, dm/ΔV S, G = 4
্ᆩLjDIS = ߛ
๑ీLjDIS = ‫گ‬
্ᆩLjDIS = ߛ
๑ీLjDIS = ‫گ‬
ਸഔ้क़
࠲Կ้क़
Rev. B | Page 5 of 24
87
87
mV
μV/°C
mV
μV/°C
μA
μA
V/V
%
ppm
12
2.7
26
V
mA
μA
100
110
dB
dB
≥ −3
≤ −4
7
4
0.7
30
V
V
μA
μA
μs
μs
10
6
ADA4941-1
ਨ‫ܔ‬ፌ‫ۨܮٷ‬ኵ
՗4
֖ຕ
‫ۨܮ‬ኵ
‫ۉ‬ᇸ‫ۉ‬უ
ࠀࡼ
٪‫ئ‬࿒‫ྷݔ܈‬
߾ፕ࿒‫ྷݔ܈‬
ᆅগ࿒‫ࡰ(܈‬থ10௱)
঳࿒
12 V
९཮3
−65°C዁+125°C
−40°C዁+85°C
300°C
150°C
ጀᅪLj‫؜ג‬ฉຎਨ‫ܔ‬ፌ‫ۨܮٷ‬ኵ੗ీࣷ‫ڞ‬ዂഗॲᆦ৳Ⴀ໦
࣋ăኄኻ๟‫ۨܮ‬ፌኵLjփภतഗॲሞኄၵईඪࢆഄ໲ཉॲ
ူ‫؜ג‬Ԩरຍࡀ߭ኸՔ‫ీࠀڦ‬Ⴀ֡ፕă‫׊‬೺ሞਨ‫ܔ‬ፌ‫ܮٷ‬
ۨኵཉॲူ߾ፕࣷᆖၚഗॲ‫ڦ‬੗੍Ⴀă
ඤፆ
θJAኍ‫ܔ‬ፌֶཉॲLjनଭഘୁ้ഗॲࡰথሞ‫ۉ‬ୟӱฉ)नഄ
ࡰಎࡰথ‫ڟ‬PCB՗௬ฉ‫ࡰڦ‬ಎ)ැ๢ᆩ*LjഄዐPCBথ੨ᇑཟ
֫ඤ၎૶ă
‫ހ‬ጎ‫(ࡼࠀڦ‬PD)ྺৢༀࠀࡼᇑ‫ހ‬ጎዐ໯ᆶ๼‫޶ڦ؜‬ሜൻ‫ۯ‬
໯‫ڞ‬ዂ‫ࡼࠀڦ‬ኮࢅLjܸৢༀࠀࡼሶྺ‫ۉ‬ᇸᆅগኮक़‫ۉڦ‬უ
(VS)‫ױ‬ᅜৢༀ‫(ୁۉ‬IS)ă޶ሜൻ‫ۯ‬໯‫ڞ‬ዂ‫ࡼࠀڦ‬ൽਦᇀਏ༹
ᆌᆩă‫ܔ‬ᇀ߳๼‫؜‬Lj޶ሜൻ‫ۯ‬໯‫ڞ‬ዂ‫ڪࡼࠀڦ‬ᇀ޶ሜ‫ୁۉ‬
‫ױ‬ᅜഗॲా‫ڦ‬၎࠲უইă໯ᆶ޶ሜ‫ڪࡼࠀڦ‬ᇀ߳޶ሜࠀࡼ
‫ڦ‬ጺࢅăฉຎऺ໙ዐՂႷ๑ᆩRMS‫ۉ‬უࢅ‫ୁۉ‬ă
ഘୁ੗ሺഽොඤLjܸٗᆶၳই‫گ‬θJAăُྔLj߸‫ূܠ‬ຌ኱থ
ᇑূຌጽ၍‫ހڦ‬ጎᆅগĂཚ੥Ă‫ۉࢅں‬ᇸ֫থ‫ة‬Ljኄཞᄣ
੗ই‫گ‬θJAă‫ހ‬ጎ‫ڹ‬և஋୞‫ࡰڦ‬ಎՂႷࡰথ‫ڟ‬ᇑཟ֫ඤ၎૶
‫ڦ‬PCBথ੨ฉ‫ࡰڦ‬ಎLjܸٗํ၄ኸۨ‫ڦ‬θJAă
཮3၂๖ሞJEDECՔጚ4֫ӱฉLj8ᆅগSOIC(126°C/W)ࢅ8
ᆅগLFCSP(83°C/W)ଇዖ‫ހ‬ጎ‫ڦ‬ፌ‫ٷ‬Ҿඇࠀࡼᇑ࣍ৣ࿒‫܈‬
‫࠲ڦ‬ဣăLFCSP‫ڹڦ‬ևࡰಎՂႷࡰথ‫ڟ‬ᇑPCB֫ඤ၎૶‫ڦ‬
ࡰಎăθJAኵ਩ྺৎຼኵă
2.5
θJA
126
83
θJC
28
19
‫ڇ‬࿋
qC/W
qC/W
ፌ‫!ࡼࠀٷ‬
ADA4941-1‫ހ‬ጎా‫ڦ‬ፌ‫ٷ‬Ҿඇࠀࡼ๴၌ᇀ၎ᆌ‫ڦ‬ႊೌ঳࿒
)TJ*‫ߛืڦ‬൧઄ă‫ڟٳ‬ի૱ࣅገՎ࿒‫܈‬150°Cፑᆸ้Lj໒ଙ
‫ڦ‬༬Ⴀࣷ݀ิ߀Վăन๑ኻ๟ሡ้‫ࡗג‬ኄᅃ࿒‫܈‬၌ኵᄺᆶ
੗ీ߀Վ‫ހ‬ጎ‫ܔ‬ႊೌፕᆩ‫ڦ‬ᆌ૰Ljܸٗᆦ৳Ⴀ‫ں‬ገՎ
ADA4941-1‫֖ڦ‬ຕႠీă‫้׊‬क़‫ࡗג‬150°C‫ڦ‬঳࿒ࣷ‫ڞ‬ዂႊ
ೌഗॲ‫؜‬၄ՎࣅLjᅺܸ੗ీሰ‫ࠤׯ‬ቱă
2.0
LFCSP
1.5
1.0
SOIC
0.5
0
–40
–20
0
20
40
60
80
AMBIENT TEMPERATURE (°C)
཮3. 4֫ӱፌ‫ࡼࠀٷ‬ᇑ࿒‫࠲ڦ܈‬ဣ
ESDয়ߢ!
ESD(ৢ‫ߌ௺)ۉݣۉ‬ഗॲăৢ‫࢔ࢁۉۉ‬ඹᅟሞට༹ࢅ֪๬ยԢฉેओLj੗ߛ‫ٳ‬4000 VLjժ੗ీሞுᆶִ
ਥ‫ڦ‬൧઄ူ‫ۉݣ‬ă৑࠶Ԩׂ೗ਏᆶጆᆩESDԍࢺ‫ۉ‬ୟLj‫ڍ‬ሞᇜ‫ీߛڟ‬ଉৢ‫้ۉݣۉ‬Lj੗ీࣷ݀ิᆦ৳
Ⴀഗॲ໦࣋ăᅺُLjॺᅱ֑ൽ๢‫ڦړ‬ESD‫ٯݔݞ‬แLjᅜՆ௨ഗॲႠీူইईࠀీෟ฿ă
Rev. B | Page 6 of 24
100
120
05704-002
‫ހ‬ጎૌ႙!
8-Lead SOIC on 4-Layer Board
8-Lead LFCSP with EP on 4-Layer Board
MAXIMUM POWER DISSIPATION (W)
՗5. ඤፆ
ADA4941-1
FB
1
8
IN
REF
2
7
DIS
V+
3
6
V–
OUT+
4
5
OUT–
05704-101
ᆅগದዃࢅࠀీ௮ຎ!
NOTES
1. THE EXPOSED PAD IS NOT ELECTRICALLY CONNECTED TO THE DEVICE.
IT IS TYPICALLY SOLDERED TO GROUND OR A POWER PLANE ON THE PCB
THAT IS THERMALLY CONDUCTIVE.
཮4.ᆅগದዃ
՗6. ᆅগࠀీ௮ຎ
ᆅগՊࡽ!
1
2
3
4
5
6
7
8
ᆅগఁ‫!׬‬
FB
REF
V+
OUT+
OUT−
V−
DIS
IN
௮ຎ!
‫ݒ‬ઍ๼෇
एጚ‫ۉ‬უ๼෇
ኟ‫ۉ‬ᇸ!
ཞ၎๼‫؜‬
‫ݒ‬၎๼‫؜‬
޶‫ۉ‬ᇸ
্ᆩ
๼෇!
Rev. B | Page 7 of 24
ADA4941-1
‫ۆ‬႙߾ፕ༬Ⴀ!
VS = +5V
VS = ±5V
10
1000
100
FREQUENCY (MHz)
NORMALIZED CLOSED-LOOP GAIN (dB)
+25°C
–40°C
1000
100
FREQUENCY (MHz)
05704-005
NORMALIZED CLOSED-LOOP GAIN (dB)
+85°C
10
2
1
0
–1
–2
–3
–4
–5
–6
–7
–8
–9
–10
–11
–12
–13
–14
–15
–16
0.1
NORMALIZED CLOSED-LOOP GAIN (dB)
RL, dm = 5kΩ
10
100
FREQUENCY (MHz)
1000
05704-006
NORMALIZED CLOSED-LOOP GAIN (dB)
RL, dm = 1kΩ
1
VO, dm = 6V p-p
+85°C
–40°C
+25°C
1
100
10
཮9. փཞ࿒‫ٷڦူ܈‬႑ࡽೕ୲ၚᆌ
VO, dm = 0.1V p-p
RL, dm = 500Ω
100
10
FREQUENCY (MHz)
཮6. փཞ࿒‫ڦူ܈‬ၭ႑ࡽೕ୲ၚᆌ
2
1
0
–1
–2
–3
–4
–5
–6
–7
–8
–9
–10
–11
–12
–13
–14
–15
1
཮8. փཞ‫ۉ‬ᇸူ‫ٷڦ‬႑ࡽೕ୲ၚᆌ
VO, dm = 0.1V p-p
1
VS = +5V
VO, dm = 6V p-p
FREQUENCY (MHz)
཮5. փཞ‫ۉ‬ᇸူ‫ڦ‬ၭ႑ࡽೕ୲ၚᆌ
2
1
0
–1
–2
–3
–4
–5
–6
–7
–8
–9
–10
–11
–12
–13
–14
–15
–16
VS = ±5V
VO, dm = 12V p-p
05704-008
1
VS = +3V
VO, dm = 2V p-p
2
1
0
–1
–2
–3
–4
–5
–6
–7
–8
–9
–10
–11
–12
–13
–14
–15
–16
0.1
VO, dm = 6V p-p
RL, dm = 1kΩ
RL, dm = 500Ω
RL, dm = 5kΩ
1
FREQUENCY (MHz)
཮10. փཞፆႠ޶ሜူ‫ٷڦ‬႑ࡽೕ୲ၚᆌ
཮7. փཞፆႠ޶ሜူ‫ڦ‬ၭ႑ࡽೕ୲ၚᆌ
Rev. B | Page 8 of 24
10
05704-009
VS = +3V
2
1
0
–1
–2
–3
–4
–5
–6
–7
–8
–9
–10
–11
–12
–13
–14
–15
–16
0.1
05704-007
VO, dm = 0.1V p-p
NORMALIZED CLOSED-LOOP GAIN (dB)
2
1
0
–1
–2
–3
–4
–5
–6
–7
–8
–9
–10
–11
–12
–13
–14
–15
–16
05704-004
NORMALIZED CLOSED-LOOP GAIN (dB)
‫ݥأ‬ଷᆶຫ௽LjVS = 5 VLjRL, dm = 1 kΩLjREF = 2.5 VLjDIS = LOWLjOUT+኱থ૶থ‫ڟ‬FB (G = 2)LjTA = 25°Că
ADA4941-1
G = +2
G = +10
1
G = –2
100
10
FREQUENCY (MHz)
G = +4
G = +2
G = –2
G = +10
1
NORMALIZED GAIN (dB)
CL = 0pF
100
1000
FREQUENCY (MHz)
05704-011
2
1
0
–1
–2
–3
–4
–5
–6
–7
–8
–9
–10
–11
–12
–13
–14
–15
–16
0.1
VO, dm = 2V p-p
VO, dm = 6V p-p
1
1000
100
཮15. փཞ๼‫ڦူ܈ޗ؜‬ೕ୲ၚᆌ
–70
VREF = 0.05V p-p
VO, dm = 2V p-p
VREF = MIDSUPPLY
–80
DISTORTION (dBc)
VS = ±5V
–90
–100
HD3
–110
–120
VS = +3V
RL = 2kΩ
–130
VS = +5V
1
10
FREQUENCY (MHz)
RL = 1kΩ
HD2
1000
05704-012
NORMALIZED CLOSED-LOOP GAIN (dB)
10
FREQUENCY (MHz)
཮12. փཞඹႠ޶ሜူ‫ڦ‬ၭ႑ࡽೕ୲ၚᆌ
2
1
0
–1
–2
–3
–4
–5
–6
–7
–8
–9
–10
–11
–12
–13
–14
–15
–16
VO, dm = 0.1V p-p
཮13. փཞ‫ۉ‬ᇸူ‫ڦ‬REF๼෇ၭ႑ࡽೕ୲ၚᆌ
–140
0.1
RL = 500Ω
HD2
1
10
100
FREQUENCY (kHz)
཮16. փཞ޶ሜူ฿ኈᇑೕ୲‫࠲ڦ‬ဣ
Rev. B | Page 9 of 24
1000
05704-015
NORMALIZED CLOSED-LOOP GAIN (dB)
཮14. փཞሺᅮူ‫ٷڦ‬႑ࡽೕ୲ၚᆌ
CL = 20pF
10
1000
FREQUENCY (MHz)
VO, dm = 0.1V p-p
1
100
10
཮11. փཞሺᅮူ‫ڦ‬ၭ႑ࡽೕ୲ၚᆌ
2
1
0
–1
–2
–3
–4
–5
–6
–7
–8
–9
–10
–11
–12
–13
–14
–15
–16
VO, dm = 2V p-p
05704-014
G = +4
2
1
0
–1
–2
–3
–4
–5
–6
–7
–8
–9
–10
–11
–12
–13
–14
–15
–16
05704-013
VO, dm = 0.1V p-p
NORMALIZED CLOSED-LOOP GAIN (dB)
2
1
0
–1
–2
–3
–4
–5
–6
–7
–8
–9
–10
–11
–12
–13
–14
–15
–16
05704-010
NORMALIZED CLOSED-LOOP GAIN (dB)
ADA4941-1
–65
–65
f = 10kHz
VS = ±5V
–85
DISTORTION (dBc)
VS = +5V
–95
HD3
–115
HD3
HD2
2
4
6
8
10
12
14
16
18
20
–145
0
4
6
8
10
12
14
16
20
18
཮20. փཞ‫ۉ‬ᇸူ฿ኈᇑ๼‫࠲ڦ܈ޗ؜‬ဣ(G = -2)
–70
VO, dm = 2V p-p
VREF = MIDSUPPLY
VO, dm = 2V p-p
VREF = MIDSUPPLY
–80
DISTORTION (dBc)
–85
–90
–90
–100
–105
–110
HD2
–115
–120
HD3
–125
–130
HD2
–110
HD2
–120
HD2
HD3
VS = +3V
HD3
–135
–140
0.1
1
VS = ±5V
10
1000
100
FREQUENCY (kHz)
G = +2
–140
0.1
0.12
1
10
1000
100
CL = 0pF
VOUT = 200mV p-p
0.08
OUTPUT VOLTAGE (V)
VO = 6V p-p
–80
–85
–90
–95
–100
–105
–110
CL = 20pF
0.04
0
–0.04
VO = 2V p-p
HD2
HD3
–125
–130
HD3
HD2
1
10
100
FREQUENCY (kHz)
1000
཮19. փཞ๼‫ူ܈ޗ؜‬฿ኈᇑೕ୲‫࠲ڦ‬ဣ
–0.12
50ns/DIV
཮22. փཞඹႠ޶ሜူ‫ڦ‬ၭ႑ࡽຨༀၚᆌ
Rev. B | Page 10 of 24
05704-022
–0.08
05704-045
–135
–140
0.1
G = +4
HD3
཮21. փཞሺᅮူ฿ኈᇑೕ୲‫࠲ڦ‬ဣ
–60
–115
–120
HD3
FREQUENCY (kHz)
཮18. փཞ‫ۉ‬ᇸူ฿ኈᇑೕ୲‫࠲ڦ‬ဣ
–65
–70
–75
G = –2
–130
VS = +5V
05704-020
–95
–100
05704-017
DISTORTION (dBc)
2
OUTPUT AMPLITUDE (V p-p)
–75
–80
DISTORTION (dBc)
HD3
HD2
཮17. փཞ‫ۉ‬ᇸူ฿ኈᇑ๼‫࠲ڦ܈ޗ؜‬ဣ(G = +2)
–60
VS = ±5V
HD3
HD3
–115
–135
OUTPUT AMPLITUDE (V p-p)
–65
–70
VS = +5V
HD2
HD3
0
VS = +3V
–105
–125
HD2
–125
–95
05704-019
–105
05704-016
DISTORTION (dBc)
VS = +3V
–85
–135
DIFFERENTIAL G = –2
f = 10kHz
–75
–75
ADA4941-1
0.12
VS = +3V
8
VOUT = 200mV p-p
0.08
VS = +5V OR VS = ±5V
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
VS = ±5V
VO, dm = 12V p-p
6
0.04
0
–0.04
VS = ±2.5V
VO, dm = 6V p-p
4
2
VS = ±1.5V
VO, dm = 2V p-p
0
–2
–4
–0.08
཮23. փཞ‫ۉ‬ᇸူ‫ڦ‬ၭ႑ࡽຨༀၚᆌ
8
1.2
0.6
0
0
–2
–0.6
2 × VIN
–1.2
–6
7
ERROR = 2 × VIN – VO, dm
6
0
VO, dm
4
10
–0.9
–1.2
1
཮27. ॺ૬้क़(0.005%)LjVS = +5 V
8
INPUT × 2
6
8
OUTPUT
OUTPUT VOLTAGE (V)
6
–0.6
1μs/DIV
཮24. ॺ૬้क़(0.005%)LjVS = ±5 V
12
–0.3
2 × VIN
2
–2.4
0.6
0.3
5
3
–1.8
1μs/DIV
–8
0.9
VS = +5V
VO, dm = 6V p-p
4
2
0
–2
–4
INPUT × 2
4
2
OUTPUT
0
–2
–4
–6
–8
1μs/DIV
–12
05704-024
–6
–10
1μs/DIV
–8
཮25. ๼෇ࡗൻ࣬ްLjVS = ±5 V
཮28. ๼෇ࡗൻ࣬ްLjVS = +5 V
Rev. B | Page 11 of 24
05704-027
–4
OUTPUT VOLTAGE (V)
AMPLITUDE (V)
ERROR = 2 × VIN – VO, dm
2
1.8
1.2
ERROR (mV) 1 DIV = 0.005%
VS = ±5V
VO, dm = 12V p-p
9
AMPLITUDE (V)
6
2.4
ERROR (mV) 1 DIV = 0.005%
VO, dm
4
05704-021
཮26. փཞ‫ۉ‬ᇸူ‫ٷڦ‬႑ࡽຨༀၚᆌ
05704-023
8
200ns/DIV
–8
05704-026
–0.12
05704-018
–6
50ns/DIV
ADA4941-1
0
0.18
±5V SUPPLIES, POSITIVE RAIL
OUTPUT SATURATION VOLTAGE
WITH RESPECT TO RAIL (V)
–10
–20
–30
PSRR (dB)
–40
+PSRR
–50
–60
–PSRR
–70
–80
–90
0.16
0.14
±5V SUPPLIES, NEGATIVE RAIL
0.12
+5V SUPPLIES, POSITIVE RAIL
0.10
+5V SUPPLIES, NEGATIVE RAIL
0.08
+3V SUPPLIES, POSITIVE RAIL
0.06
–100
0.1
1
10
100
1000
FREQUENCY (MHz)
0.04
–40
+3V SUPPLIES, NEGATIVE RAIL
–20
0
20
40
཮29. ‫ۉ‬ᇸᅞ዆Բᇑೕ୲‫࠲ڦ‬ဣ
100
120
2.5
ICC @ VS = ±5V
VPD = VS–
2.0
SUPPLY CURRENT (mA)
3.0
VS = +5V
2.5
VS = ±5V
2.0
VS = +3V
1.5
ICC @ VS = +3V
ICC @ VS = +5V
1.5
1.0
0.5
1.0
–40
–20
0
20
40
60
80
100
120
TEMPERATURE (°C)
–0.5
0.6
཮30. ‫ۉ‬ᇸ‫ୁۉ‬ᇑ࿒‫࠲ڦ܈‬ဣ
1.0
1.2
1.4
1.6
1.8
2.0
཮33. ‫ۉ‬ᇸ‫ୁۉ‬ᇑਸ࠲‫ۉ‬უ‫࠲ڦ‬ဣ
140
150
120
125
VOS_A2 = 10V
100
0.8
DISABLE INPUT VOLTAGE WITH RESPECT TO VS– (V)
05704-032
0
05704-029
100
FREQUENCY
VOS_A2 = 5V
75
VOS_A2 = 3V
80
VOS1
MEAN = –8μV
STD. DEV = 47μV
VOS2
MEAN = 11μV
STD. DEV = 20μV
NO. OF UNITS = 611
60
50
40
VOS_A1 10V
VOS_A1 = 5V
40
60
80
TEMPERATURE (°C)
100
120
0
OFFSET VOLTAGE (μV)
཮31. ֶ‫ݴ‬๼‫؜‬฿ۙ‫ۉ‬უᇑ࿒‫࠲ڦ܈‬ဣ
཮34. ֶ‫ݴ‬๼‫؜‬฿ۙ‫ݴ‬ք཮
Rev. B | Page 12 of 24
05704-033
20
80
100
120
140
160
180
200
0
60
–20
20
40
0
–40
20
05704-030
VOS_A1 = 3V
–20
0
25
–200
–180
–160
–140
–120
–100
–80
–60
–40
POWER SUPPLY CURRENT (mA)
80
཮32. ๼‫؜‬ԏࢅ‫ۉ‬უᇑ࿒‫࠲ڦ܈‬ဣ
3.5
DIFFERENTIAL OUTPUT OFFSET (μV)
60
TEMPERATURE (°C)
05704-031
0.01
05704-028
–110
0.001
ADA4941-1
DIFFERENTIAL OUTPUT VOLTAGE NOISE (nV/√Hz)
100
28
INPUT CURRENT NOISE (pA/√Hz)
26
10
24
22
20
18
16
14
12
10
8
6
4
10
100
1k
10k
100k
1M
10M
100M
FREQUENCY (Hz)
0
05704-034
1
10
1
10k
100k
1M
཮38. ๼෇‫ୁۉ‬ሯำᇑೕ୲‫࠲ڦ‬ဣ
3.5
2.65
VS = ±5V
INPUT BIAS CURRENT (μA)
INPUT BIAS CURRENT (μA)
1k
FREQUENCY (Hz)
཮35. ֶ‫ݴ‬๼‫ۉ؜‬უሯำᇑೕ୲‫࠲ڦ‬ဣ
2.60
100
05704-037
2
1
VS = +5V
2.55
VS = +3V
2.50
2.45
3.0
2.5
VS = +3V
VS = ±5V
VS = +5V
2.0
–25
–10
5
20
35
50
65
80
95
125
110
TEMPERATURE (°C)
1.5
–0.5
05704-035
0
0.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
9.5
10.0
INPUT VOLTAGE WITH RESPECT TO VS– (V)
4.0
REFERENCE INPUT BIAS CURRENT (μA)
3.3
3.2
REFERENCE I BIAS = 10V
3.1
3.0
REFERENCE I BIAS = 5V
2.9
REFERENCE I BIAS = 3V
2.8
–20
0
20
40
60
80
100
TEMPERATURE (°C)
120
VREF = VIN
3.5
3.0
VS = +3V
VS = ±5V
VS = +5V
2.5
2.0
05704-036
REFERENCE BIAS CURRENT (μA)
1.5
཮39. ๼෇ೋዃ‫ୁۉ‬ᇑ๼෇‫ۉ‬უ‫࠲ڦ‬ဣ
཮36. փཞ‫ۉ‬ᇸူ๼෇ೋዃ‫ୁۉ‬ᇑ࿒‫࠲ڦ܈‬ဣ
2.7
–40
1.0
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
10.0
9.5
REFERENCE INPUT VOLTAGE WITH RESPECT TO VS– (V)
཮40. REF๼෇ೋዃ‫ୁۉ‬ᇑREF๼෇‫ۉ‬უ‫࠲ڦ‬ဣ
཮37. REF๼෇ೋዃ‫ୁۉ‬ᇑ࿒‫࠲ڦ܈‬ဣ
Rev. B | Page 13 of 24
05704-039
2.35
–40
05704-038
2.40
ADA4941-1
14
VS = ±5V
G=4
RF = 1kΩ
RL = ∞
DIS = HIGH
8
12
DISABLE INPUT CURRENT (μA)
DISABLED SUPPLY CURRENT (μA)
10
VS = ±5V
6
VS = +5V
4
VS = +3V
2
10
8
6
4
–20
0
20
40
60
80
100
120
TEMPERATURE (°C)
0
05704-040
0
–40
0
1
2
3
4
5
6
7
8
9
10
DISABLE INPUT VOLTAGE WITH RESPECT TO VS– (V)
཮41. ሏ‫࠲ݣ‬Կ้փཞ‫ۉ‬ᇸူ‫ۉ‬ᇸ‫ୁۉ‬ᇑ࿒‫࠲ڦ܈‬ဣ
05704-043
2
཮44.ਸ࠲๼෇‫ୁۉ‬ᇑਸ࠲๼෇‫ۉ‬უ‫࠲ڦ‬
VO, dm
500mV/DIV
500mV/DIV
VO, dm
VPD
40μs/DIV
05704-044
05704-041
VPD
40μs/DIV
཮42. ࠲Կዃ࿋้क़
཮45. ࠲Կް࿋้क़
–40
100
VIN = 50mV p-p
–50
10
VON
IMPEDANCE (Ω)
–70
–80
1
0.1
0.01
VOP
–90
–110
0.1
1
10
100
1000
FREQUENCY (MHz)
཮43. ሏ‫࠲ݣ‬Կ้๼෇዁๼‫߰؜‬૗ᇑೕ୲‫࠲ڦ‬ဣ
0.0001
0.001
0.01
0.1
1
10
FREQUENCY (MHz)
཮46. ‫܋ڇ‬๼‫؜‬ፆੇᇑೕ୲‫࠲ڦ‬ဣ
Rev. B | Page 14 of 24
100
05704-025
0.001
–100
05704-042
ISOLATION (dB)
–60
ADA4941-1
߾ፕᇱ૙
ADA4941-1๟ᅃ੼‫ࡼࠀگ‬Ă‫܋ڇ‬๼෇Ăֶ‫ݴ‬๼‫ٷݣ؜‬ഗLj
ժ ኍ ‫ ܔ‬ൻ ‫ ݴ ߛ ۯ‬Ր ୲ ADC৊ ႜ କ ᆫ ࣅ ă ཮ 47ቛ ๖ କ
ADA4941-1‫ۆڦ‬႙૶থ‫ݛ‬๕ă޿‫ٷݣ‬ഗᆯᅃ߲‫ݥ‬ጆᆩ‫ٷݣ‬
ഗA1ൻ‫ۯ‬ᅃ߲৛௢ొՎഗA2ăA1‫޶ڦ‬ट๼෇ԥᆅ‫ڟ؜‬ᆅ
গ1(FB)LjܸٗሎႹᆩࢽ‫ܔ‬ሺᅮ৊ႜՊ‫ײ‬ă‫ݒ‬၎ሏ໙‫ٷݣ‬ഗ
A2৛ඓ‫ݒ‬ገA1‫ڦ‬๼‫؜‬႑ࡽVOPLj৊ׂܸิ๼‫؜‬႑ࡽVONă
‫ړ‬RF = 0ܸRGԥ‫أ‬ඁ้Lj‫ײݛ‬3੗०ࣅྺူ๕ǖ
཮48. ມ‫ۉ‬ᇸĂG = 2.4Ă‫܋ڇ‬ገֶ‫ٷݣݴ‬ഗ
཮48๟ມ‫ۉ‬ᇸ૶থ‫ڦ‬๖૩ăԨ૩ዐLjVGࢅVREF਩ยྺ
0 VLj൐ྔևRFࢅRGྪஏ๑A1༵ࠃ1.2‫ڦ‬ཞ၎ሺᅮăԨ૩؊
‫ݴ‬૧ᆩࡆ‫ࡆڟ‬๼‫؜‬पăሺᅮࠅ๕ྺǖ
཮47. एԨ૶থ(࿄၂๖‫ۉ‬ᇸ)
แे‫ڟ‬REFᆅগ‫ۉڦ‬უ৽๟๼‫ࠌ؜‬ఇ‫ۉ‬უă൩ጀᅪLjแे
‫ڟ‬REFᆅগ‫ۉڦ‬უժփࣷᆖၚOUT+ᆅগ‫ۉڦت‬უăᅺ
ُLj๼‫؜‬ኮक़੗ᅜ٪ሞֶ‫ݴ‬฿ۙLjܸཞ้ీࠕइ‫ڥ‬໯Ⴔ‫ڦ‬
๼‫ࠌ؜‬ఇ‫ۉ‬უă૩සLjVOP = 3.5 V൐VON = 1.5 V้Lj๼‫؜‬
ࠌఇ‫ۉ‬უ‫ڪ‬ᇀ2.5 VLj৽ࢅଇ߲๼‫؜‬਩ྺ2.5 V้ᅃᄣăሞമ
ᅃዖ൧઄ူLjֶ‫ۉݴ‬უ(ई฿ۙ)ྺ2.0 VLjܸሞࢫᅃዖ൧઄
ူLjֶ‫ۉݴ‬უྺ0 Văऺ໙๼‫ۉ؜‬უ้LjՂႷཞ้੊୯ֶ
‫ۉݴ‬უࢅࠌఇ‫ۉ‬უLjᅜՆ௨փႴᄲ‫ݴֶڦ‬฿ۙă
‫ڦ૴ز‬825 Ω‫ۉ‬ፆᇑᆅগ8੗ց‫׋‬A1๼෇฿ۙ‫ۉڦิׂୁۉ‬
უဃֶăA1ࢅA2‫ڦ‬၍Ⴀ๼‫ྷݔ؜‬੗ᅜકቛ዁߳ࠃ‫ࡆۉ‬
200 mVᅜాLjܸٗሎႹሞ֑ᆩ±5 V‫ۉ‬ᇸࠃ‫ํ้ۉ‬၄19.2 V
‫ރރڦ‬ኵֶ‫ݴ‬๼‫ۉ؜‬უă
एԨ߾ፕᇱ૙!
཮47ዐLjRGࢅRFࠓ‫ྔׯ‬ևሺᅮยዃྪஏăVGࢅVREF਩ྺ
ྔևแे‫ۉڦ‬უăVO, cmۨᅭྺ๼‫ࠌ؜‬ఇ‫ۉ‬უLjܸVO, dm
ۨᅭྺ๼‫ֶ؜‬ఇ‫ۉ‬უăٗ཮47੗ᅜ‫؜ڥ‬ᅜူ‫ײݛ‬ǖ
཮49. +5V‫ۉڇ‬ᇸĂG=2‫܋ڇ‬ገֶ‫ٷݣݴ‬ഗ
཮49၂๖‫ڦ‬๟ᆩ5 V‫ۉڇ‬ᇸ૶থ‫ڇڦ‬࿋ሺᅮ߶ໜഗA1ăREF
ᆅগ‫ڦت‬2.5 V‫ۉ‬უॽ๼‫ࠌ؜‬ఇ‫ۉ‬უยዃྺ2.5 Vă‫ࡧڿد‬ຕ
ྺǖ
Rev. B | Page 15 of 24
ADA4941-1
ഄዐLj၍Ⴀ๼‫ۉ؜‬უ๴၌ᇀA1ă‫้܋گ‬LjໜጣVOPደॷথ
ৎ200 mVLjA1‫ڦ‬๼‫؜‬ਸ๔ԏࢅժ൐၍Ⴀ‫؜܈‬၄ူইăߛ‫܋‬
้Ljᅃ‫ڋ‬VIN‫ࡗג‬4 V(VCC‫ڦ‬1 V‫)ాྷݔ‬LjA1๼෇नՎ‫ׯ‬ԏ
ࢅժ൐၍Ⴀ‫؜܈‬၄ူইăኄࣷॽ཮49໯๖‫ۉ‬ୟ‫ڦ‬၍Ⴀֶ‫ݴ‬
๼‫ۉ؜‬უ၌዆ሞ‫ٷ‬ሀ7.6 V‫ރރ‬ኵă
֑ᆩࡀ߭༬Ⴀ՗ዐ‫ڦ‬ຕ਍ሞऺ໙ဃֶ้Lj๑ᆩ๼෇฿ۙ‫ۉ‬
ୁઠ‫߳༺پ‬๼෇ೋዃ‫ୁۉ‬ཚ‫׉‬ၳࡕࣷ߸ࡻă๼෇฿ۙ‫ୁۉ‬
ۨᅭྺଇ߲๼෇ೋዃ‫ୁۉ‬ኮक़‫ֶڦ‬ኵă૧ᆩُۨᅭLj߳๼
෇ೋዃ‫ୁۉ‬਩੗֑ᆩଇ߲๼෇ೋዃ‫ڦୁۉ‬ೝ਩ኵ(IB)ࢅ๼
෇฿ۙ‫(ୁۉ‬IOS)‫ڦ‬ႚ๕՗๖LjनIBP, N = IB ± IOS/2ă‫ړ‬RS = RF
|| RG้Lj኱ୁဃֶፌၭăُ้Lj‫ײݛ‬9੗ᅜ०ࣅྺǖ
‫ײݛ‬10՗๖‫ڦ‬๟VON๼‫ڦت؜‬኱ୁ‫ۉ‬უဃֶă
ೌాण‫ׯ‬500 Ω‫ాڦ‬և‫ۉ‬ፆLj੗ॽᅺA2ዐ๼෇฿ۙ‫ܸୁۉ‬ሰ
‫ڦׯ‬኱ୁဃֶই‫ڟ‬ፌ‫گ‬ă‫ړ‬RS_REF = 0 Ω้Ljဃֶፌၭăُ
้Lj‫ײݛ‬10੗ᅜ०ࣅྺǖ
཮50. 5 V‫ۉ‬ᇸࠃ‫ۉ‬ĂG = 5Ă‫܋ڇ‬ገֶ‫ٷݣݴ‬ഗ
཮50၂๖‫ڦ‬๟G = 5้‫ڦ‬5 V‫ۉڇ‬ᇸ૶থăRFࢅRGྪஏॽA1
‫ڦ‬ሺᅮยዃྺ2.5LjܸREF๼෇‫ڦت‬2.5 V‫ۉ‬უ੗༵ࠃᅜ2.5 V
ྺዐ႐‫ڦ‬๼‫ࠌ؜‬ఇ‫ۉ‬უă‫ࡧڿد‬ຕྺǖ
VOP − VON = 5(VIN) − 5 V
(8)
A1ࢅA2‫ڦ‬๼‫ྷݔ؜‬၌዆ࣷॽ཮50໯๖‫ۉ‬ୟ‫ݴֶڦ‬๼‫ۉ؜‬უ
၌዆ሞ‫ٷ‬ሀ8.4 V‫ރރ‬ኵă
ֶ‫ݴ‬๼‫ۉ؜‬უဃֶ(VO_error,dm)๟VOP_errorࢅVON_error
ኮक़‫ֶڦ‬ኵǖ
ُྔLjADA4941-1ฉ߳‫ٷݣ‬ഗ‫ڦ‬๼‫؜‬฿ۙ‫ۉ‬უ࣏ਏᆶᆶ၌
ࠌఇᅞ዆Բ(CMRR)Ă‫ۉ‬ᇸᅞ዆Բ(PSRR)ࢅ኱ୁਸ࣍ሺᅮ
(AVOL)‫ڪ‬ၳᆌă
኱ୁဃֶऺ໙!
ഄዐǖ
VOS_nom๟փԈઔCMRRĂPSRRࢅAVOLၳᆌ‫ڦ‬Ք‫׬‬๼‫؜‬฿ۙ
‫ۉ‬უă
Δ՗๖Ք‫׬‬ཉॲՎࣅă
཮51. ኱ୁဃֶᇸ
཮51၂๖‫ڦ‬๟኱ୁ๼‫ۉ؜‬უဃֶ‫ڦ‬ዷᄲઠᇸă‫ܔ‬ᇀ߳๼
‫؜‬Ljጺ‫ۉ‬უဃֶ੗๑ᆩຄဒ‫ڦ‬ሏ໙‫ٷݣ‬ഗ߁౒৊ႜऺ໙ă
‫ײݛ‬9՗๖‫ڦ‬๟VOP๼‫ڦت؜‬኱ୁ‫ۉ‬უဃֶă
V CM ྺ๼෇ࠌఇ‫ۉ‬უ)‫ܔ‬ᇀ A1LjྺIN‫ۉڦت‬უLjܸ‫ܔ‬ᇀ
A2LjሶྺREF‫ۉڦت‬უ*ă
VSྺ‫ۉ‬ᇸ‫ۉ‬უă
VOUTྺඪᅃሏ໙‫ٷݣ‬ഗ๼‫؜‬ă
Rev. B | Page 16 of 24
ADA4941-1
՗7Ă՗8ࢅ՗9၂๖‫ڦ‬๟཮48Ă཮49ࢅ཮50໯๖‫ۉ‬ୟ‫ۆڦ‬႙
ဃֶᇨ໙ă
RF = 1.0 kΩ, RG = 4.99 kΩ, RS_IN = 825 Ω, RS_REF = 0 Ω
཮52၂๖‫ڦ‬๟ADA4941-1ֶ‫ݴ‬๼‫ۉ؜‬უሯำ‫ڦ‬ዷᄲઠᇸă
ֶ‫ݴ‬๼‫؜‬ሯำ਩‫ۉݛ‬უ‫ڪ‬ᇀཞ၎ཚ‫(ڢ‬A1)ሯำ਩‫ۉݛ‬უ‫ڦ‬
ଇԠेฉᇑ‫ݒ‬၎ཚ‫(ڢ‬A2)၎࠲‫ڦ‬ሯำ਩‫ۉݛ‬უၜă
՗7. ཮48໯๖G = 2.4‫ٷݣ‬ഗ‫ڦ‬๼‫ۉ؜‬უဃֶᇨ໙
ဃֶᇸ
VOS_A1
IBP_A1
IBN_A1
VOS_A2
‫ۆ‬႙ኵ
0.1 mV
3 μA
3 μA
0.1 mV
VOP_error
+0.12 mV
+2.48 mV
−2.48 mV
0 mV
VON_error
−0.12 mV
−2.48 mV
+2.48 mV
+0.2 mV
VO_dm_error
+0.24 mV
−4.96 mV
+4.96 mV
+0.2 mV
ጺ V O_error, dm = 0.44 mV
RF = 0 Ω, RG = ∞, RS_IN = 0 Ω, RS_REF = 0 Ω
՗8. ཮49໯๖‫ٷݣ‬ഗ‫ڦ‬๼‫ۉ؜‬უဃֶᇨ໙
ဃֶᇸ
‫ۆ‬႙ኵ
VOS_A1
IBP_A1
IBN_A1
VOS_A2
0.1 mV
3 μA
3 μA
0.1 mV
ഄዐVON_n2‫ऺڦ‬໙ࠅ๕සူǖ!
VOP_error
+0.1 mV
+2.48 mV
−2.48 mV
0 mV
VON_error
−0.1 mV
−2.48 mV
+2.48 mV
+0.2 mV
VO_dm_error
+0.2 mV
−4.96 mV
+4.96 mV
+0.2 mV
ഄዐǖ
ጺ VO_error, dm = 0.4 mV
vn_A1ࢅ vn_A2‫ݴ‬՚๟A1ࢅA2‫ڦ‬๼෇‫ۉ‬უሯำLjժ਩‫ڪ‬ᇀ
2.1 nV/√Hză
RF = 1.02 kΩ, RG = 665 Ω, RS_IN = 402 Ω, RS_REF = 0 Ω
in_A1 Ă in_A2 Ă ip_A1 ࢅ ip_A2 ๟‫ٷݣ‬ഗ‫ڦ‬๼෇‫ୁۉ‬ሯำ
ၜLjժ਩‫ڪ‬ᇀ1 pA/√Hză
՗9. ཮50໯๖G = 5‫ٷݣ‬ഗ‫ڦ‬๼‫ۉ؜‬უဃֶᇨ໙
ဃֶᇸ
‫ۆ‬႙ኵ
VOS_A1
IBP_A1
IBN_A1
VOS_A2
0.1 mV
3 μA
3 μA
0.1 mV
VOP_error
+0.25 mV
+1.21 mV
−1.21 mV
0 mV
VON_error
−0.25 mV
−1.21 mV
+1.21 mV
+0.2 mV
VO_dm_error
+0.5 mV
−2.4 mV
+2.4 mV
+0.2 mV
RS、RFࢅRG‫ݴ‬՚๟ྔևᇸĂ‫ݒ‬ઍࢅሺᅮ‫ۉ‬ፆă
kT๟ਨ‫ܔ‬࿒‫ױ܈‬ᅜհܻጦத‫׉‬ຕLj๪࿒ူ‫ڪ‬ᇀ4.2 x
10-21W-să
ጺ V O_error, dm = 0.7 mV
RS_REF๟REFᆅগ‫ڦت‬ᇸፆੇă
๼‫ۉ؜‬უሯำ
ॽA1ᆩፕ‫ڇ‬࿋ሺᅮ߶ໜഗ้Lj๼‫ۉ؜‬უሯำೕ೷௢‫܈‬ፌ
ၭLjྺ10 nV/√Hză‫ۉ‬უሺᅮሁߛLj๼‫ۉ؜‬უሯำሁ‫ٷ‬ă
՗10Ă՗11ࢅ՗12၂๖‫ڦ‬๟཮48Ă཮49ࢅ཮50໯๖‫ۉ‬ୟ‫ڦ‬
ሯำࠋ၅ࢅ๼‫ۉ؜‬უሯำă
཮52. ሯำᇸ
Rev. B | Page 17 of 24
ADA4941-1
՗10. ཮48໯๖G = 2.4ֶ‫ٷݣݴ‬ഗ‫ڦ‬๼‫ۉ؜‬უሯำ
ሯำᇸ
vn_A1
ip_A1
in_A1
√4 kTRF
√4 kTRG
√4 kTRS
vn_inverter
√RS_REF
ip_A2 × RS_REF
‫ۆ‬႙ኵ
2.1 nV/√Hz
1 pA/√Hz
1 pA/√Hz
4 nV/√Hz
9 nV/√Hz
3.6 nV/√Hz
9.2 nV/√Hz
0
0
VOPࠋ၅ኵ(nV√Hz)
2.5
1
1
4
1.8
4.4
0
0
0
VONࠋ၅ኵ(nV√Hz)
2.5
1
1
4
1.8
4.4
9.2
0
0
VO, dmࠋ၅ኵ(nV√Hz)
5
2
2
8
3.6
8.8
9.2
0
0
ጺऺ
6.8
11.4
16.5
RF = 1.0 kΩLjRG = 4.99 kΩLjRS = 825 ΩLjRS_REF = 0 Ωă
vn_inverter= A2तഄ၎࠲ాև1 kΩ‫ݒ‬ઍ‫ۉ‬ፆࢅ500 Ω฿ۙ‫ୁۉ‬ೝ࢚‫ۉ‬ፆ‫ڦ‬ሯำࠋ၅ă
՗11. ཮49໯๖G = 2ֶ‫ٷݣݴ‬ഗ‫ڦ‬๼‫ۉ؜‬უሯำ
ሯำᇸ
vn_A1
ip_A1
in_A1
√4 kTRF
√4 kTRG
√4 kTRS
vn_inverter
√RS_REF
ip_A2 × RS_REF
‫ۆ‬႙ኵ
2.1 nV/√Hz
0
0
0
0
0
9.2 nV/√Hz
0
0
VOPࠋ၅ኵ(nV√Hz)
2.1
0
0
0
0
0
0
0
0
VONࠋ၅ኵ(nV√Hz)
2.1
0
0
0
0
0
9.2
0
0
VO, dmࠋ၅ኵ(nV√Hz)
4.2
0
0
0
0
0
9.2
0
0
ጺऺ
2.1
9.4
10
RF = 0 Ω, RG = ∞, RS = 0 Ω, RS_REF = 0 Ω.
՗12. ཮50໯๖G = 5ֶ‫ٷݣݴ‬ഗ‫ڦ‬๼‫ۉ؜‬უሯำ
ሯำᇸ
vn_A1
ip_A1
in_A1
√4 kTRF
√4 kTRG
√4 kTRS
vn_inverter
√RS_REF
ip_A2 × RS_REF
‫ۆ‬႙ኵ
2.1 nV/√Hz
1 pA/√Hz
1 pA/√Hz
4 nV/√Hz
3.26 nV/√Hz
2.54 nV/√Hz
9.2 nV/√Hz
0
0
VOPࠋ၅ኵ(nV√Hz)
5.25
1
1
4
4.9
6.54
0
0
0
VONࠋ၅ኵ(nV√Hz)
5.25
1
1
4
4.9
6.54
9.2
0
0
VO, dmࠋ၅ኵ(nV√Hz)
10.5
2
2
8
9.8
13.1
9.2
0
0
ጺऺ
10.7
14.1
23.1
RF = 1.02 kΩ, RG = 665 Ω, RS = 402 Ω, RS_REF = 0 Ω.
Rev. B | Page 18 of 24
ADA4941-1
ೕ୲ၚᆌᇑԿ࣍ሺᅮ
ADA4941-1ዐ๑ᆩ‫ڦ‬๟‫ۉ‬უሏ໙‫ٷݣ‬ഗă ໲‫ڦ‬ਸ࣍ೕ୲ၚ
ᆌ߶ओ‫ݴ‬ഗၚᆌૌຼă ੂ཮53ă
‫ݒ‬၎‫ٷݣ‬ഗA2ਏᆶᅃ߲ࠦۨ‫ݒڦ‬ઍྪஏă‫ࡧڿد‬ຕ‫ٷ‬ዂ
ྺǖ
A1‫ڦ‬ೕ୲ၚᆌൽਦᇀ‫ײݛ‬15໯՗๖‫ྔڦ‬և‫ݒ‬ઍྪஏăᅺ
ُLjጺֶ‫ݴ‬๼‫ۉ؜‬უྺǖ
཮53. ADA4941-1ሏ໙‫ٷݣ‬ഗਸ࣍ሺᅮᇑೕ୲‫࠲ڦ‬ဣ
‫ܔ‬ᇀ௅߲‫ٷݣ‬ഗLjೕ୲ၚᆌ੗ཚࡗူ๕৊ႜৎຼऺ໙ǖ
ॽ߳ၜ၎‫ױ‬ժูඁ੗ࢮ୼փऺ‫ڦ‬ၜन੗‫ڟڥ‬ᅜူৎຼኵǖ
!!!!!!!!)ཞ၎ၚᆌ*
!!!!!!!!(‫ݒ‬၎ၚᆌ)
fCRྺ‫ٷݣ‬ഗ‫ڦ‬ሺᅮ‫੻ټ‬ೕ୲(ഄዐ཮53໯๖‫ڦ‬ਸ࣍ሺᅮ‫ڪ‬ᇀ
1)ăଇ߲‫ٷݣ‬ഗ‫ڦ‬fCR਩ሀྺ50 MHză
ُ‫ࡧڿد‬ຕᆶଇ߲ट‫ۅ‬Ljܸড‫گ‬ೕ୲‫ڦ‬ट‫ࣷۅ‬၌዆ֶ‫ݣݴ‬
‫ ٷ‬ഗ ‫ ੻ ټ ڦ‬ă ස ࡕVOP‫ ܌‬ୟ ዁ IN−) A1ྺ ‫ ڇ‬࿋ ሺ ᅮ ߶ ໜ
ഗ*Lj‫ݒ‬၎ཚ‫ڦڢ‬25 MHzԿ࣍‫ࣷ੻ټ‬၌዆ኝ༹‫੻ټ‬ă‫ړ‬A1
֑ᆩডߛሯำሺᅮ้Lj‫ࣷ੻ټ‬๴၌ᇀA1‫ڦ‬Կ࣍‫੻ټ‬Ljܸࢫ
ኁᇑሯำሺᅮ(1 + RF/RG)‫ݒׯ‬Բă૩සLjසࡕྔև‫ݒ‬ઍྪ
ஏ‫ڦ‬ሯำሺᅮྺ10Ljሶ‫ࣷ੻ټ‬ই዁5 MHză
Rev. B | Page 19 of 24
ADA4941-1
ᆌᆩ
߁ຎ
ADA4941-1๟ᅃ੼੗ۙሺᅮĂ‫܋ڇ‬ገֶ‫ۉݴ‬უ‫ٷݣ‬ഗLjժ
ኍ‫ܔ‬ൻ‫ݴߛۯ‬Ր୲ADC৊ႜକᆫࣅă‫܋ڇ‬ገֶ‫ݴ‬ሺᅮᆯᅃ
߲‫ݒ‬ઍྪஏ੦዆Lj޿ྪஏᆯᅜူଇ߲ྔև‫ۉ‬ፆࠓ‫ׯ‬ǖRFࢅ
R Gă
๑ᆩREFᆅগ
REFᆅগॽ๼‫؜‬ए၍ยዃሞ‫ݒ‬၎ୟ০ዐLjժᆩፕ๼෇႑ࡽ
‫ڦ‬एጚăሞ‫ٷ‬և‫ݴ‬ᆌᆩዐLjREFᆅগยዃྺ๼෇႑ࡽዐक़
Ӧ‫ۉޗ‬ೝLj࢔‫ࢪ้ܠ‬ᄺ‫ྺ׬‬ዐक़‫ۉ‬ᇸ‫ۉ‬უă‫ܔ‬ᇀມटႠ႑
ࡽࢅມ‫ۉ‬ᇸࠃ‫ۉ‬LjREFཚ‫׉‬ยዃྺ‫ۉں‬უăሞ‫ۉڇ‬ᇸᆌᆩ
ዐLjॽREFยዃྺ๼෇႑ࡽዐक़Ӧ‫ۉޗ‬ೝ੗༵ࠃਏᆶፌၭ
ֶ‫ݴ‬฿ۙ‫ڦ‬ፌᆫ๼‫ۯ؜‬ༀ‫ྷݔ‬Ⴀీă൩ጀᅪLjREF๼෇ኻ
ࣷᆖၚ‫ݒ‬၎႑ࡽୟ০ईVONă
‫ܠٷ‬ຕᆌᆩᄲ൱ሞ߳๼‫ࠃ༵܋؜‬ਏᆶ၎ཞ኱ୁࠌఇ‫ۉ‬ೝ‫ڦ‬
ֶ‫ݴ‬๼‫؜‬႑ࡽăሞVOPࢅVONฉ֪ଉ‫ڦڟ‬႑ࡽ੗ీਏᆶ໯
Ⴔ‫ۉ‬ೝ‫ࠌڦ‬ఇ‫ۉ‬უLj‫ڍ‬௅‫ڦ܋‬๼‫ۉ؜‬უ੗ీփᅃᄣăཚ‫׉‬
ࣷՆ௨ُૌ႑ࡽLjᅺྺ໲࿮݆ᆶၳ‫ں‬૧ᆩ‫ٷݣ‬ഗ‫ڦ‬๼‫ۯ؜‬
ༀ‫ྷݔ‬ă
ැॽVINۨᅭྺแे‫ڟ‬๼෇ᆅগ‫ۉڦ‬უLjሶਦۨଇ߲႑ࡽ
ୟ০‫ݴײݛڦ‬՚ྺ‫ײݛ‬21ࢅ‫ײݛ‬22ă
VOP = VIN
(21)
VON = −VIN + 2 (REF)
(22)
‫ړ‬REF‫ۉ‬უยዃྺ๼෇႑ࡽ‫ڦ‬ዐक़Ӧ‫ۉޗ‬ೝLjሶଇ߲๼‫؜‬
႑ࡽࣷዘ۠Ljܸ൐฿ۙࣷ३ณ‫ڟ‬ፌၭăܸॽREF‫ۉ‬უยዃ
‫ڟ‬ඪࢆഄ໲‫ݛں‬Ljሶࣷ‫ڞ‬ዂଇ߲๼‫؜‬ኮक़‫؜‬၄฿ۙă
ྺକ৊ᅃօຫ௽REFᆅগ‫ڦ‬ፌॅᆩ݆Ljူ௬ઠੂੂ‫ۉ‬ᇸ‫ۉ‬
უྺ10 V൐๼෇႑ࡽ࿋ᇀ2 Vࢅ7 Vኮक़‫ۉڇڦ‬ᇸӄ૩ăԨ
૩ዐ๼෇႑ࡽ‫ڦ‬ዐक़Ӧ‫ۉޗ‬ೝժփ๟ዐक़‫ۉ‬ᇸ‫ۉ‬უLjܸ๟
4.5 VăཚࡗॽREF๼෇ยዃྺ4.5 Vժࢮ୼฿ۙLjሶ੗๑ᆩ
‫ײݛ‬21ࢅ‫ײݛ‬22ઠऺ໙঳ࡕă‫ړ‬๼෇႑ࡽ࿋ᇀዐक़‫ۅ‬4.5 V
้LjOUT+ྺ4.5 VLj‫ٷ‬ၭᇑVONᅃᄣăኄ੗๫ፕᅃዖए၍
ጒༀLjֶُ้‫ݴ‬๼‫ۉ؜‬უྺ0ă‫ړ‬๼෇ሺे‫ڟ‬7 V้LjVOP
߶ጷ๼෇ሺे‫ڟ‬7 VLjܸVONࣷই዁2 Văኄ੗๫ፕᅃ߲ኟ
‫ރ‬ኵ႑ࡽLjֶُ้‫ݴ‬๼‫ۉ؜‬უ‫ڪ‬ᇀ5 Vă‫ړ‬๼෇႑ࡽই዁2
V้LjVOPምْ߶ጷ዁2 VLjܸVONࣷሺे‫ڟ‬7 Văኄ੗๫
ፕᅃ߲޶‫ރ‬ኵ႑ࡽLjֶُ้‫ݴ‬๼‫ۉ؜‬უ‫ڪ‬ᇀ−5 VăᅺُLj
໯‫ݴֶڥ‬๼‫ۉ؜‬უྺ10 V‫ރރ‬ኵă
ٗኮമ‫ڦ‬༪ஃ੗ᅜੂ‫ٷ؜‬ၭྺ2‫܋ڇڦ‬ገֶ‫ݴ‬ሺᅮ๟සࢆ
ํ၄‫ڦ‬ă
ాև‫ݒ‬ઍྪஏࠀࡼ
‫د‬ཥሏ໙‫ٷݣ‬ഗժփԈࡤೌా‫ݒ‬ઍᇮॲLjܸADA4941-1ದ
ᆶଇ߲ೌా1 kΩ‫ۉ‬ፆLjኄଇ߲‫ۉ‬ፆࠓ‫ׯ‬କᅃ߲ాև‫ݒ‬ઍ࣍
ୟăሞऺ໙޿ഗॲ‫ڦ‬ጺࠀࡼ้LjՂႷ੊୯ኄၵ‫ۉ‬ፆ‫ࠀڦ‬
ࡼăగၵ൧઄ူLjኄၵ‫ۉ‬ፆ‫ࡼࠀڦ‬੗ీᇑ޿ഗॲ‫ৢڦ‬ༀࠀ
ࡼփ၎ฉူă૩සLj‫ۉ‬ᇸ‫ۉ‬უྺ±5 VĂREFᆅগথ‫ں‬Lj൐
OUT−ྺ+4 VDC้Lj௅߲1 kΩ‫ۉ‬ፆฉ‫ྺୁۉڦ‬4 mALjᅺُ
௅߲‫ۉ‬ፆ‫ྺࡼࠀڦ‬16 mWLjଇ߲‫ۉ‬ፆ‫ڦ‬ጺࠀࡼྺ32 mWă
ኄᇑৢༀࠀࡼփ၎ฉူLjᅺُऺ໙ഗॲጺࠀࡼ้ՂႷ੊୯
ሞాă‫ܔ‬ᇀ኱ୁ႑ࡽLjሶႴᄲ৊ႜ਩‫ݴߵݛ‬ဆă
্ᆩ༬Ⴀ
ADA4941-1ਏᆶਸ࠲ࠀీLj੗ሞ༬้ۨक़ॽ࿮ᆩഗॲ‫ࠀڦ‬
ࡼই዁ፌ‫گ‬ăዃ࿋้Ljਸ࠲ࠀీփࣷॽഗॲ๼‫؜‬ዃᇀߛፆ
ੇईෙༀཉॲူăਸ࠲༬Ⴀྺߛ‫ۉ‬ೝᆶၳăᆶ࠲ߛ‫ۉگ‬ೝ
‫ۉ‬უ༬ႠLj൩֖९ࡀ߭༬Ⴀ՗ă
Rev. B | Page 20 of 24
ADA4941-1
ཁे3ट‫ۅ‬Sallen-Key୳հഗ
཮54ቛ๖‫ڦ‬๟3ट‫ۅ‬Sallen-Key‫گ‬ཚ୳հഗLj ໲‫ڦ‬প዁ೕ୲
๟100 kHză໯Ԉࡤ‫ڦ‬1.69 kΩ‫ۉ‬ፆᆩᇀॽᅺA1ዐ๼෇฿ۙ
‫ୁۉ‬ሰ‫ڦׯ‬኱ୁဃֶই዁ፌၭă໯ൻ‫ڦۯ‬ADCገ࣑ഗཚ‫׉‬
Ⴔᄲֶ‫ݴ‬ሏ‫ݣ‬ሞ๼‫܋؜‬ದዃ࿮ᇸRC୳հഗă޿୳հഗ‫ڦ‬ೕ
୲ၚᆌ൸၍ස཮55໯๖ă
ADA4941-1ዐ‫ڦ‬ཞ၎‫ٷݣ‬ഗ੗ᆩፕSallen-Key୳հഗ‫࣐ڦ‬؋
‫ٷݣ‬ഗăܸ3ट‫گۅ‬ཚ୳հഗ੗ยऺᆩᇀሞADCኮമ၌዆
႑ࡽ‫੻ټ‬ă๼෇႑ࡽ๯ံୁࡗཞ၎पժሞ޿‫ت‬৊ႜࡗ୳ă
থጣLj୳հࢫ‫ڦ‬႑ࡽୁࡗ‫ݒ‬၎पLjᅜइ‫ࢻڥ‬ց๼‫؜‬ă
OUT+
3
10nF
562Ω
562Ω
1.69kΩ 1
562Ω
8
FB
VS+
6
560pF
3.9nF
OUT–
A2
REF
+
VO, dm
–
0.1μF
1kΩ
VS–
2
33Ω
2.7nF
1kΩ
+5V
A1
IN
4
5
33Ω
2.7nF
500Ω
–5V
0.1μF
05704-058
VIN
཮54. Sallen-Key‫گ‬ཚ୳հഗᇑ100 kHzপኹೕ୲
0
VO, dm = 3V p-p
–10
–20
VO, dm/VIN (dB)
–30
–40
–50
–60
–70
–80
–100
10
100
1k
10k
100k
1M
FREQUENCY (Hz)
཮55. ཮54໯๖‫ۉ‬ୟ‫ڦ‬ೕ୲ၚᆌ
Rev. B | Page 21 of 24
10M
100M
05704-059
–90
ADA4941-1
ൻ‫ۯ‬AD7687 ADC
−2ሺᅮದዃ
ADA4941-1๟ᅃ੼๢ࢇAD7687‫ݴߛڪ‬Ր୲ADC‫؜ڦ‬෥ൻ‫ۯ‬
ഗLjස཮56໯๖ăԨ૩Ԉࡤ཮54໯๖‫ڦ‬Sallen-Key‫گ‬ཚ୳հ
ഗLj‫ํڍ‬ाฉ੗ᆶ੗࿮ă཮56໯๖‫ۉڦ‬ୟথ๴Ӧ‫ޗ‬ሞ0 Vࢅ
3 Vኮक़‫܋ڇڦ‬๼෇႑ࡽă
ADA4941-1੗ᅜሞሺᅮྺ−2‫ڦ‬ದዃူ߾ፕă၂඗Lj−2‫ڦ‬ሺ
ᅮ੗ཚࡗ०‫࣑ࢻںڇ‬+2ሺᅮ‫ۉ‬ୟ‫ڦ‬๼‫؜‬ઠํ၄Lj‫ڍ‬๟ُ‫ت‬
঻ถ‫ڦ‬ದዃᆶ໯փཞă޿ದዃ֑ᆩ޶ሺᅮઠഽۙ๼෇‫ٷݣ‬
ഗ(A1)๟ፕྺ‫ݒ‬၎‫ٷݣ‬ഗ๑ᆩLjܸփ๟ሞഄ‫׉‬९ཞ၎ఇ๕
ူ߾ፕăኟසഄఁ‫׬‬໯๖LjٗVIN‫ڟ‬VO, dm‫ۉڦ‬უሺᅮྺ−
2 V/Văᆶ࠲‫ۉ‬ᇸ‫ۉ‬უྺ±5 V้−2ሺᅮದዃ‫ڦ‬൧઄Lj൩֖
९཮57ă
ADR443༵ࠃ࿘ۨĂ‫گ‬ሯำ‫ڦ‬3 Vएጚ‫ۉ‬უᇸLj඗ࢫ޿एጚ
‫ۉ‬უᇸᆯഄዐᅃ߲AD8032‫ٷݣ‬ഗ࣐؋ժแे‫ڟ‬AD7687
REF๼෇‫܋‬Ljܸ༵ٗࠃ6 V‫ݴֶڦ‬๼෇஢ଉ‫ۉײ‬ೝăཞ้Lj
एጚ‫ۉ‬უ࣏ࣷ৊ႜܾ‫ݴ‬ೕࢅ࣐؋‫ت‬૙LjܸٗၠADA4941-1
༵ࠃ1.5 V‫ڦ‬ዐक़‫ۉ‬ᇸ‫ۉ‬უREF‫ۉ‬ೝă
−2ሺᅮದዃሞਏᆶ੻๼෇Ӧ‫ڦޗ‬ᆌᆩዐፌྺᆶᆩLjᅺྺ๼
෇ࠌఇ‫ۉ‬უࣷԍ‫ۉ࢛ۨ׼‬ೝăᅺُLj႑ࡽ‫ٷ‬ၭ๴၌ᇀ๼‫؜‬
Ӧ‫ޗ‬၌዆ă−2ሺᅮਏᆶ‫گ‬๼෇ፆੇLj‫ٷ‬ၭ‫ڪ‬ᇀRGă
+5V
0.1μF
OUT+
1kΩ
3
10nF
562Ω
VS+
IN
8
VS– ADA4941-1
2 REF 500Ω
6
VIN
0V TO 3V
560pF
3.9nF
2
0.1μF
VIN
VOUT
GND
33Ω
4
IN– GND
REF
5
1
0.1μF
+5V
+5V
10μF
5
2.7nF
–5V
ADR443
OUT–
A2
IN+ VDD
AD7687
0.1μF
1kΩ
A1
2
3
10μF
0.1μF
6
3
8
1
0.1μF
2
4
1/2
4 AD8032
10μF
1kΩ
5
7
1kΩ
6
1/2
AD8032
཮56. ADA4941-1ൻ‫ۯ‬AD7687 ADC
RF
1kΩ
OUT+
3
RG
1kΩ
1
8
VIN
FB
1kΩ
+5V
VS+
VS–
2
500Ω
6
+
VO, dm
–
1kΩ
A1
IN
4
A2
REF
500Ω
–5V
཮57. −2ሺᅮದዃ
Rev. B | Page 22 of 24
OUT–
5
05704-060
562Ω
FB
33Ω
2.7nF
05704-061
562Ω
1.69kΩ 1
4
ADA4941-1
ྔႚ؅٫
5.00 (0.1968)
4.80 (0.1890)
8
4.00 (0.1574)
3.80 (0.1497)
1
5
4
6.20 (0.2441)
5.80 (0.2284)
1.27 (0.0500)
BSC
1.75 (0.0688)
1.35 (0.0532)
0.25 (0.0098)
0.10 (0.0040)
0.51 (0.0201)
0.31 (0.0122)
COPLANARITY
0.10
SEATING
PLANE
0.50 (0.0196)
0.25 (0.0099)
45°
8°
0°
0.25 (0.0098)
0.17 (0.0067)
1.27 (0.0500)
0.40 (0.0157)
012407-A
COMPLIANT TO JEDEC STANDARDS MS-012-AA
CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN.
཮58. 8ᆅগՔጚၭ႙‫ހ‬ጎ[SOIC_N]
቏༹(R-8)
཮๖؅٫‫ڇ‬࿋ǖmmࢅ(inches)
0.60 MAX
5
PIN 1
INDICATOR
2.95
2.75 SQ
2.55
TOP
VIEW
8
12° MAX
SEATING
PLANE
0.50
0.40
0.30
0.70 MAX
0.65 TYP
0.05 MAX
0.01 NOM
0.30
0.23
0.18
0.20 REF
1.60
1.45
1.30
EXPOSED
PAD
(BOTTOM VIEW)
4
0.90 MAX
0.85 NOM
0.50
BSC
0.60 MAX
1
1.89
1.74
1.59
PIN 1
INDICATOR
FOR PROPER CONNECTION OF
THE EXPOSED PAD, REFER TO
THE PIN CONFIGURATION AND
FUNCTION DESCRIPTIONS
SECTION OF THIS DATA SHEET.
090308-B
3.25
3.00 SQ
2.75
཮59. 8ᆅগᆅগॐࠓႊೌप‫ހ‬ጎ[LFCSP_VD]
3 mm x 3 mmLj‫ג‬ԋ༹Ljມଚᆅগ(CP-8-2)
཮๖؅٫‫ڇ‬࿋ǖmm
۩ࠔኸళ
႙ࡽ!
ADA4941-1YRZ
ADA4941-1YRZ-RL
ADA4941-1YRZ-R7
ADA4941-1YCPZ-R2
ADA4941-1YCPZ-RL
ADA4941-1YCPZ-R7
1
࿒‫!ྷݔ܈‬
−40°C ዁ +125°C
−40°C ዁ +125°C
−40°C ዁ +125°C
−40°C ዁ +125°C
−40°C ዁ +125°C
−40°C ዁ +125°C
‫ހ‬ጎ௮ຎ!
8ᆅগSOIC_N
8ᆅগSOIC_N
8ᆅগSOIC_N
8ᆅগLFCSP_VD
8ᆅগLFCSP_VD
8ᆅগLFCSP_VD
Z = ‫ࢇޙ‬RoHSՔጚ‫ڦ‬ग़ඹഗॲă
Rev. B | Page 23 of 24
‫ހ‬ጎ჋ၜ!
R-8
R-8
R-8
CP-8-2
CP-8-2
CP-8-2
۩ࠔຕଉ!
98
2,500
1,000
250
5,000
1,500
Ք๎
H0C
H0C
H0C
ADA4941-1
ጀ๥
©2009–2010 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D05704-0-3/09(A)
Rev. B | Page 24 of 24