Industrial_Signal_Chain.pdf

VOL 2
Industrial Signal Chain
High Performance Analog ICs
Industrial systems demand semiconductors that are precise, flexible
and reliable. Linear Technology offers a broad line of high performance
analog ICs that simplify system design with rugged devices featuring
parameters fully guaranteed over the -40°C to 85°C temperature range.
We back this up with knowledgeable applications support, long product
life cycles and superior on-time delivery.
This brochure spotlights recently released signal path ICs from
Linear Technology that are ideally suited for demanding industrial
applications, including:
•
•
•
•
•
•
•
•
ADCs
DACs
Amplifiers
Comparators
Filters
Voltage References
RMS-to-DC Converters
Silicon Oscillators
For the latest datasheets, application notes, software design tools and
interactive selection tables, visit www.linear.com.
I/H Grade Parts by Product Type
Linear Technology offers over 450
OSCILLATOR, 9
analog and mixed-signal base parts
REFERENCE, 12
FILTER, 13
specified from -40°C to 85°C or
beyond for the most demanding
MUX, 5
COMPARATOR, 29
industrial signal chain applications.
ADC, 162
AMPLIFIER, 170
DAC, 55
Industrial Signal Chain
AMPLIFIERS
Precision Amplifiers–pg 02
Low Bias Current Amplifiers–pg 03
Low Power Amplifiers–pg 04
Speed + Precision Amplifiers–pg 05
Instrumentation Amplifiers–pg 06
PGAs and Difference Amplifiers–pg 07
Current Sense Amplifiers–pg 08
ADCs
No Latency Delta-Sigma™ ADCs–pg 10
Easy Drive Delta-Sigma ADCs–pg 11
General Purpose SAR ADCs–pg 12
High Speed ADCs–pg 16
Signal Chain Modules–pg 17
FILTERS
ADC Drivers and Filters–pg 09
DACs
Micropower Voltage Output–pg 18
RMS-DC CONVERSION–pg 19
PRECISION REFERENCES–pg 20
SILICON OSCILLATORS–pg 21
02
IND U STR IA L SIG N A L CHA I N
PREC IS ION OPERAT ION AL AMPLIF IERS
Precision Operational Amplifiers
Linear Technology's precision amplifiers combine DC accuracy with other critical features such as low noise, low power, small packages
and rail-to-rail inputs and outputs, making them useful in a wide range of applications.
LT®1637
. Over-The-Top®: Operates with Inputs Above V +
. Rail-to-Rail Input and Output
. Micropower: 250µA Supply Current Max
. Gain-Bandwidth Product: 1.1MHz
. Slew Rate: 0.4V/µs
. Low Input Offset Voltage: 350µV Max
. Reverse Battery Protection to 25V
. High CMRR: 110dB
. Available in 8-Lead MSOP, PDIP and SO Packages;
Switchable Precision Current Source
4V TO 44V
+
4.7µF
LT1004-1.2
R
2k
R*
+
TP0610
LT1637
–
IOUT
SHDN
IOUT = 1.2
R
e.g., 10mA = 1201
*OPTIONAL FOR LOW OUTPUT CURRENTS,
R* = R
plus a Tiny (3mm × 3mm × 0.8mm) DFN Package
Precision Op Amps
Part No
Amplifiers
per
Package
VOS
Max 25°C
(µV)
VOS TC
Max
(µV/°C)
IB
Max 25°C
(nA)
AVOL (dB)
en
(nV/ Hz )
Typ
GBW
(MHz)
Rail-toRail
IS/Amp
Max
(mA)
LTC ® 2054/5
1/2
3
0.03
0.15
VSUPPLY (V)
140
–
0.5
Out
0.15
LTC2050/1/2
1/2/4
3
0.03
2.7–7
0.075
140
–
3
Out
1.2
LTC2050/1/2HV
1/2/4
3
2.7–7
0.03
0.15
140
–
3
Out
1.5
2.7–12
LTC2054/5HV
1/2
LTC1150/1
1/2
5
0.03
0.15
140
–
0.5
Out
0.18
2.7–12
5
0.05
0.1
–
–
2.5
–
1.5
4.75–32
LT1007
LTC6078/9
1
25
0.6
35
146
2.5
8
–
4
4–44
2/4
25
0.7
0.001
130
18
0.75
In/Out
0.072
2.7–5.5
LT6010
1
35
0.8
0.11
126
14
0.33
Out
0.15
2.7–40
LT1028
1
40
0.8
90
150
0.85
75
9.5
8–44
LT1881/2
2/4
50
0.8
0.2
124
14
1
Out
0.9
2.4–40
LT1884/5
2/4
50
0.8
0.4
124
9.5
2
Out
0.9
2.4–40
LT1991
1
50
1
5
–
46
0.56
In/Out
0.11
2.4–40
LT6011/2
2/4
60
0.8
0.3
126
14
0.33
Out
0.15
2.4–40
LT1677
1
60
1.5
20
146
3.2
7.2
In/Out
3.5
2.5–44
LTC6081/2
2/4
70
0.8
0.001
120
13
3.6
In/Out
0.425
2.7–5.5
LT1468/9
1/2
75
2
40
139
5
90
5
6–36
LT1678/9
2/4
100
3
20
130
3.9
20
In/Out
3.5
2.7–36
LTC6244HV
2
100
2.5
0.075
128
8
50
Out
7.4
2.8–10.5
LTC6241/2
2/4
125
2.5
0.075
124
7
18
Out
2.2
2.8–6
LTC6241/2HV
2/4
175
2.5
0.075
124
7
18
Out
2.2
2.8–11
LT1013/4
2/4
150
2
20
138
22
0.5
4–44
LTC6240
1
175
2.5
0.001
124
7
18
Out
2.4
2.8–6
LTC6240HV
1
250
2.5
0.001
129
7
18
Out
3.3
2.8–11
LT1637
1
350
3
50
118
27
1
In/Out
0.25
1.8–44
LT1800/1/2
1/2/4
350
5
250
99
8.5
80
In/Out
2
2.3–12.6
LT1494/5/6
1/2/4
375
2
1
114
185
0.003
In/Out
0.0015
2.1–36
LT1490/1A
2/4
500
4
8
124
50
0.18
In/Out
0.055
2–44
LT6003/4/5
1/2/4
500
5
0.09
114
325
0.002
In/Out
0.001
1.6–16
LT6202/3/4
1/2/4
500
24
7000
106
1.9
100
In/Out
3.5
2.5–12.6
LT1638/9
2/4
600
6
50
124
20
1.2
In/Out
0.23
2.2–44
LT6000/1/2
1/2/4
750
5
5
96
75
0.05
In/Out
0.016
1.8–18
LTC6087/8
2/4
750
5
1 typ
136
12
14
In/Out
1.3
2.7–6
LTC6084/5
2/4
750
5
1 typ
126
27
1.5
In/Out
0.13
2.5–6
IND U STR IA L SIG N A L CHA I N
03
L OW BIAS C U RREN T OPERAT ION AL AMPLIF IERS
Low Bias Current Operational Amplifiers
LTC6078
. Maximum Offset Voltage of 25µV (25°C)
. Maximum Offset Drift of 0.7µV/°C
. Maximum Input Bias:
Input Bias vs Temperature
180
VS = 5V
160 VCM = 2.5V
INPUT BIAS CURRENT (pA)
CMOS operational amplifiers are known for their low bias current and low power
operation. Linear Technology’s family of CMOS op amps combine these advantages with
high precision usually associated with bipolar amplifiers. The LTC6241 features peak-topeak input referred noise of 550nV from 0.1Hz to 10Hz, allowing it to extract even the
tiniest of signals from high impedance sensors. The LTC6078 delivers extraordinary DC
precision at the lowest possible supply current, making it ideal for portable and looppowered instrumentation applications.
140
120
100
80
60
40
20
0
0
1pA (25°C)
50pA ()85°C)
. Micropower: 54µA per Amp
. 95dB CMRR (Min)
. 100dB PSRR (Min)
. Input Noise Voltage: 16nV/ Hz
. Rail-to-Rail Inputs and Outputs
. 2.7V to 5.5V Operation Voltage
25
50
75
100
TEMPERATURE ('C)
125
Thermocouple Signal Conditioner
5V
SMT
1/4W
150k
NORMALLY
FLOATING
+
1/2
LTC6078
0.1µF
OMEGA
5TC-TT-K-30-36
THERMOCOUPLE
SMT
1/4W
150k
–
5V
2.49M
K
LT1025
OUT = 10mV/∞C
0∞C TO 500∞C ±0.5∞C
1k
40.6µV/∞C
100pF
10k
5.6pF
AMPLIFIER PROTECTED TO ±190V, ACCIDENTAL CONTACT
Low Bias Current Op Amps
Products
Amplifiers
per
Package
VOS
Max
25°C
(µV)
TCVOS
Max
(µV/°C)
IB
Max
25°C
(pA)
en
Typ
(nV/ Hz )
GBW
Typ
(MHz)
SR
Typ
(V/µs)
I S / Amp
Max
25°C
(mA)
VSUPPLY (V)
Packages
LTC6078/9
2/4
25
0.7
1
18
0.75
0.05
0.072
2.7 to 6
MS-8, DFN/DFN, SSOP
LTC6081/2
2/4
70
0.8
1
13
3.6
1
0.425
2.7 to 5.5
MS-8, DFN/DFN, SSOP
LTC6240
1
175
2.5
1
7
18
10
2.4
2.8 to 6
SOT-23, SO-8
LTC6240HV
1
250
2.5
1
7
18
10
3.3
2.8 to 11
SOT-23, SO-8
LT1462/3
2/4
800
20
2
76
0.175
0.13
0.045
10 to 40
SO-8, DIP, SO-14
LT1057/8
2/4
450
10
50
13
5
14
2.5
8 to 40
SO-8, DIP, SO-16
LTC2050/1/2
1/2/4
3
0.03
75
–
3
2
1.2
2.7 to 12
SOT-23, DFN, MSOP, SO-8
LTC6244
2
100
2.5
75
8
50
35
7.4
2.8 to 6
MS-8, DFN
LTC6244HV
2
100
2.5
75
8
50
35
7.4
2.8 to 10.5 MS-8, DFN
LTC6241/2
2/4
125
2.5
75
7
18
10
2.2
2.8 to 6
DFN, SO-8/SSOP, DFN
LTC6241/2HV
2/4
175
2.5
75
7
18
10
2.2
2.8 to 11
DFN, SO-8/SSOP, DFN
LT6003/4/5
1/2/4
500
5
90
325
0.002
0.0008
1
1.6 to 16
SOT23-5, DFN/MS-8, TSSOP
LTC2054/5
2/4
3
0.03
150
–
0.5
0.5
150
2.7 to 6
SOT23-5, DFN-8, SO-8
LTC6084/5
2/4
750
5
1 typ
27
1.5
0.5
0.13
2.5 to 6
DFN-8, MS-8, DFN-16, SSOP-16
LTC6087/8
2/4
750
5
1 typ
12
14
7.2
1.3
2.7 to 5.5
MS-8, DFN/SSOP,DFN
IND U STR IA L SIG N A L CHA I N
L OW POWER OPERAT ION AL AMPLIF IERS
Low Power Operational Amplifiers
Linear Technology’s family of low power precision operational amplifiers
are designed to maximize battery life and performance through a
combination of low operating current and wide supply range. These
products also maintain excellent precision required for the most
advanced handheld instruments.
Micropower Oxygen Sensor
10M
1%
100k
1%
LT6003
100k
1%
OXYGEN SENSOR
CITY TECHNOLOGY
4OX(2)
. Wide Supply Range: 1.6V to 16V
. Low Supply Current: 1µA/Amplifier Max
. Low Input Bias Current: 90pA Max
. Low Input Offset Voltage: 500µV Max
. Low Input Offset Voltage Drift: 2µV/°C
. AVOL Driving 20k Load: 100,000 Min
. Capacitive Load Handling: 500pF
. Specified from –40°C to 125°C
. Tiny 2mm x 2mm DFN or SOT-23 Package
1.6V
LT6003
VOUT = 1V IN AIR
ISUPPLY = 0.95µA
100Ω
1%
www.citytech.com
VOS Distribution
35
PERCENT OF UNITS (%)
04
VS = 5V, 0V
VCM = 2.5V
30 MS8 PACKAGE
1377 AMPLIFIERS
25
20
15
10
5
0
–600 –400 –200
0
200 400
INPUT OFFSET VOLTAGE (µV)
600
Low Power Op Amps
Part No
Amplifiers
per
Package
I S / Amp
(mA)
Max
IB (nA)
en
(nV/ Hz )
Typ
GBW
(MHz)
Typ
VOS (mV)
VSUPPLY (V)
Rail-toRail
LT6003/4/5
1/2/4
0.001
0.5
0.09
325
0.002
1.6 to 16
In/Out
SOT23-5, DFN-4, DFN-8,
MS-8, DFN-16, TSSOP-16
LT1494/5/6
1/2/4
0.0015
0.375
1
185
0.0027
2.1 to 36
In/Out
DIP-8, MS-8, SO-8, DIP-14,
SO-14
LT1672/3/4
1/2/4
0.002
0.375
1
185
0.012
2.1 to 36
In/Out
MS-8, SO-8, DIP-14, SO-14,
SSOP-16
Packages
LT6000/1/2
1/2/4
0.016
0.6
5
75
0.05
1.8 to 18
In/Out
DFN, MSOP, SSOP-16
LT1178/9
2/4
0.017
0.07
5
49
0.085
2 to 44
–
SO-8, DIP, SO-16
LT2178/9
2/4
18
0.07
5
49
0.0175
2.2 to 44
–
SO-8, SO-14
LT1462/3
2/4
0.045
0.8
0.002
76
0.175
10 to 40
–
SO-8, SO-14, PDIP
LT2078/9
2/4
0.05
0.07
8
28
0.2
2.3 to 44
–
SO-8, SO-14
LT1078/9
2/4
0.05
0.07
8
28
0.2
2.2 to 44
–
SO-8, SO-16, PDIP
LTC2055HV
2
0.15
0.003
0.15
–
0.5
2.7 to 12
Out
DFN-8, MS-8
LTC2054HV
1
0.175
0.003
0.15
–
0.5
2.7 to 12
Out
SOT23-5
LT1635
1
0.2
1.3
4.5
50
0.175
1.1 to 14
Out
DIP-8, SO-8
IND U STR IA L SIG N A L CHA I N
05
S PEED + PREC IS ION OPERAT ION AL AMPLIF IERS
Speed + Precision Operational Amplifiers
Linear Technology Speed + Precision Amplifiers offer an excellent
combination of high gain bandwidth product and fast slew rate, low noise
and high precision, making them an excellent choice in data acquisition
and high speed sensor conditioning applications.
Very Low Noise Large Area Photodiode
0.25pF
5V
PHILIPS
BF862
JFET
1M
5V
LTC6244
4.99k
. Input Bias Current: 1pA (Typ at 25°C)
. Low Offset Voltage: 100µV Max
. Low Offset Drift: 2.5µV/°C Max
. 0.1Hz to 10Hz Noise: 1.5µVP-P
. Slew Rate: 40V/µs
. Gain Bandwidth Product: 50MHz
. Output Swings Rail-to-Rail
. Supply Operation:
1/2
LTC6244HV
IPD
4.7µF*
VOUT = 1M • IPD
BW = 350kHz
NOISE = 291nV AT 10kHz
–
–5V
VOUT
+
4.99k
–5V
VBB
HAMAMATSU LARGE AREA
PHOTODIODE
S1227-1010BQ
CPD = 3000pF
* CAN BE MICROPHONIC, FILM, X7R, IF NEEDED.
VOS Distribution
120
2.8V to 6V LTC6244
110
. Low Input Capacitance: 2.1pF
NUMBER OF UNITS
100
90
LTC6244MS8
VS = 5V, 0V
VCM = 2.5V
TA = 25∞C
80
70
60
50
40
30
20
10
0
–60
Speed + Precision Operational Amplifiers
20
40
–40 –20
0
INPUT OFFSET VOLTAGE (µV)
60
Part No
Amplifiers
per
Package
GBW
Typ
(MHz)
SR
Typ
(V/µs)
VOS
Max
(µV)
VOS TC
Max
(µV/°C)
IB Max
(nA)
en
Rail-to- (nV/ Hz )
Rail
Typ
IS/Amp
Max
(mA)
VSUPPLY (V)
Packages
LT1806/7
1/2
325
125
550
5
4000
In/Out
3.5
13
2.5–12.6
SOT23-6, SO-8, MSOP-8
LT6230/1/2
1/2/4
215
70
500
3
10000
Out
1.1
3.75
3–12.6
SOT23-6, DFN-8, SO-8,
SSOP-16
LT6202/3/4
1/2/4
100
25
500
24
7000
In/Out
1.9
3.5
2.5–12.6
SOT23-6, DFN-8, SO-8,
MSOP-8, SO-14, SSOP-16
LT1468 /9
1/2
90
22
75
2
40
–
5
5
6–36
S0-8, PDIP
LT1800/1/2
1/2/4
80
25
350
5
250
In/Out
8.5
2
2.3–12.6
SOT23-5, DFN-8, SO-8,
MSOP-8, SO-14
LT1028
1
75
15
40
0.8
90
–
0.85
9.5
8–44
SO-8, PDIP
LT1037
1
60
15
25
0.6
35
–
2.5
4.3
8–44
SO-8, PDIP
LT6220/1/2
1/2/4
60
20
350
5
150
In/Out
10
1
2.2–12.6
SOT23-5, DFN-8, SO-8,
SSOP-16
LT6233/4/5
1/2/4
60
17
500
3
3000
Out
1.9
1.25
3–12.6
SOT23-6, DFN-8, SO-8,
SSOP-16
LTC6244HV
2
50
35
100
2.5
0.075
Out
8
7.4
2.8–10.5
DFN-8, MSOP-8
LT1630/1
2/4
30
9.2
525
5.5
1000
In/Out
6
4.4
2.6–36
SO-8, PDIP, SO-14
1215/6
2/4
23
30
300
2.5
500
–
12
6.6
2.5–36
SO-8, PDIP, SO-14
LT1678/9
2/4
20
6
100
3
20
In/Out
3.9
3.4
3–36
SO-8, SO-14
LTC6241/2HV
2/4
18
10
125
2.5
0.075
Out
7
2.2
2.8–11
DFN-8, SO-16, DFN-16,
SSOP-16
LTC6240HV
1
18
10
175
2.5
0.001
Out
7
2.4
2.8–11
SOT23-5, SO-8
LTC6087/8
2/4
14
7.2
750
5
0.001 typ
In/Out
12
1.3
2.7–5.5
DFN-10, MSOP-8,
DFN-16, SSOP-16
LT1124/5
2/4
12.5
4.5
70
1
20
–
2.7
2.75
8–44
SO-8, PDIP, SO-16
06
IND U STR IA L SIG N A L CHA I N
IN S T RU MEN TAT ION AMPLIF IERS
Instrumentation Amplifiers
Zero Drift, Precision Instrumentation Amplifier with Digitally
Programmable Gain
2.7V to ± 5V
+
Zero Drift
+–
x1
–
With very low DC offset along with high input impedance and high
excellent common mode rejection, Linear Technology’s in-amps are
designed to cover all ranges of applications where extreme precision
and stability of the circuit are required. Many of these, such as the
LTC2053 implement a zero-drift architecture, improving total system
precision and eliminating the need for post assembly trim. This family
of parts includes different gain-setting methods, including a single
gain setting resistor, two resistors (similar to an op amp) and digitally
programmable gain. From fixed gain to programmable gain, Linear
Technology offers a variety of instrumentation amplifiers, suited for
all your circuit needs.
OUT
SENSE
SERIAL/
PARALLEL
REF
SERIAL/PARALLEL
INTERFACE
µP
LTC6915
RESISTOR
ARRAY
LTC6915
. 14 Levels of Programmable Gain
0, 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024,
2048 or 4096
. Parallel or Serial (SPI) Interface for Gain Setting
. 125dB CMRR Independent of Gain
. Gain Accuracy: 0.075%
. Maximum Offset Voltage: 10µV
. Maximum Offset Drift: 50nV/°C
. Rail-to-Rail Input/Output
. 2.7V to ±5.5V Supply Range
. 3mm x 4mm DFN, SSOP-16 Packages
LTC6915 Demo Board
Device
Gain
Range
VOS
Max
25°C
(µV)
Supply
Current
Max 25°C
(mA)
CMRR
Min
25°C
(dB)
GBW
(MHz)
Supply
Voltage
(V)
Package
Gain Set
Comments
LTC1100
10 or 100
10
2.8
104
1.8
4.75–18
SOW-16, PDIP
Fixed Gain
Zero Drift
LT1101
10 or 100
160
0.13
100
0.37
1.8–44
SOW-16, PDIP
Fixed Gain
Micropower Single Supply
LT1167
1–10k
40
1.3
126
1
4.6–40
SO-8, PDIP
One R Set Gain
Precision, Low Ib
LT1168
1–10k
40
0.53
126
0.4
4.6–40
SO-8, PDIP
One R Set Gain
Low Ib, Low Power
LT1789-1
1–1k
100
0.095
100
0.06
2.2–36
SO-8
One R Set Gain
Precision, Micropower
LT1789-10
10–1k
160
0.095
98
0.025
2.2–36
SO-8
One R Set Gain
Precision, Micropower
LT1920
1–10k
125
1.3
110
0.8
4.6–40
SO-8, PDIP
One R Set Gain
Precision
LTC2053
Any
10
1.3
105
0.2
2.7–11
MSOP-8, DFN-8
Two Rs Set Gain
Zero Drift, RRIO
LTC2053SYNC
Any
10
1.3
105
0.2
2.7–11
MSOP-8, DFN-8
Two Rs Set Gain
Zero Drift, Rail-to-Rail,
Sync to External Clock
LTC6800
Any
100
1.2
90
0.2
2.7–5.5
MSOP-8, DFN-8
Two Rs Set Gain
Low Cost, Zero Drift,
RRIO
LTC6915
1–4096
10
1.6
105
0.2
2.7–11
DFN-12, SSOP-16 Digital Gain
Zero Drift, Serial/Parallel
Programmable
IND U STR IA L SIG N A L CHA I N
P R O GR AMMABL E G AIN AMPLIF IERS AN D G AIN -S ELEC TABLE D IF F EREN C E AM PLIFIERS
PGAs and Gain-Selectable Difference Amplifiers
With hundreds of different gain configurations available,
Linear Technology’s selectable gain amplifiers give designers
precise gain just by strapping the pins. Free Configurator
software shows the pin connections for your specific
design. These amplifiers accurately amplify small differential
voltages and reject large common mode signals. Linear
Technology’s single and dual programmable gain amplifiers
allow designers to change the gain on-the-fly, providing
even more circuit flexibility.
Rail-to-Rail Gain = 1 Difference Amplifier
5V
50k
450k
VOUT = VREF + ΔVIN
SWING 40mV TO
EITHER RAIL
ROUT <0.1Ω
150k
VM(IN)
ΔVIN
VP(IN)
–
450k
+
450k
–
LT1991
+
LT1991
450k
150k
INPUT RANGE
–0.5V TO 5.1V
RIN = 900kΩ
4pF
50k
. Difference Amplifier Gain Range: 1 to 13
. Noninverting Amplifier Gain Range: 0.07 to 14
. Inverting Amplifier Gain Range: -0.08 to -13
. Gain Error: <0.04%
. Gain Drift: <3ppm/°C
. Wide Supply Range: Single 2.7V to Split ±18V
. Micropower: 100µA Supply Current
. Precision: 50µV Maximum Input Offset Voltage
. 560kHz Gain Bandwidth Product
. Rail-to-Rail Output
4pF
VREF = 2.5V
LT1990 Demo Board
PGAs and Diff Amps
IS /Amp
(mA)
Max
GBW
(MHz)
Gain Range
Packages
Comments
Device
Channels
VSUPPLY
(V)
LTC6910-1
S
2.7–10.5
3
11
0, 1, 2, 5, 10, 20, 50, 100
SO-8
Digitally Controlled Programmable Gain
LTC6910-2
S
2.7–10.5
3
13
0, 1, 2, 4, 8, 16, 32, 64
SO-8
Digitally Controlled Programmable Gain
LTC6910-3
S
2.7–10.5
3
11
0, 1, 2, 3, 4, 5, 6, 7
SO-8
Digitally Controlled Programmable Gain
LTC6911-1
D
2.7–10.5
3
11
0, 1, 2, 5, 10, 20, 50, 100
MS-10
Matched Amplifiers with Digitally
Programmable Gain
LTC6911-2
D
2.7–10.5
3
11
0, 1, 2, 4, 8, 16, 32, 64
MS-10
Matched Amplifiers with Digitally
Programmable Gain
LTC6912-1
D
2.7–10.5
2.75
30
0, 1, 2, 5, 10, 20, 50, 100
DFN-12, GN-16
Programmable Gain Amplifiers with Serial
Digital Interface
LTC6912-2
D
2.7–10.5
2.75
30
0, 1, 2, 4, 8, 16, 32, 64
DFN-12, GN-16
Programmable Gain Amplifiers with Serial
Digital Interface
LT1990
S
2.7–36
0.12
0.1
1 or 10
SO-8
±250V Input Range G = 1, 10, µpower,
Difference Amplifier
LT1991
S
2.7–36
0.11
0.56
-13–14
MS-10, DFN-10
Precision, 100µA Gain Selectable Amplifier
LT1995
S
5–36
8.5
30
-7– 8
MS-10, DFN-10
30MHz, 1000V/µs Gain Selectable Amplifier
LT1996
S
2.7–36
0.11
0.56
-117–118
MS-10, DFN-10
Precision, 100µA Gain Selectable Amplifier
LTC6915
S
2.7–11
1.6
0.2
0, 1, 2, 4, 8, 16, 32, 64, 128,
DFN-12, GN-16
256, 512, 1024, 2048, or 4096
Zero Drift, Precision Instrumentation
Amplifier with Digitally Programmable Gain
07
08
IND U STR IA L SIG N A L CHA I N
C U RREN T S EN S E AMPL IF IERS
High Side Current Sense Amplifiers
High Side Current Sense Amplifiers
Linear Technology offers the largest
portfolio of high precision current sense
amplifiers on the market. Higher precision
means smaller value sense resistors,
lower voltage drop and lower power/heat
dissipation.
LTC6102/HV
. Supply Range:
4V to 60V, 70V Abs Max (LTC6102)
5V to 100V, 105V Abs Max (LTC6102HV)
. ±10µV Input Offset Max
. ±50nV/°C Input Offset Drift Max
. Fast Response: 1µs Step Response
. Gain Configurable with Two Resistors
. Low Input Bias Current:
Part No
VOS
Max
25°C
(mV)
VOS
TC
Max
(µV/°C)
IS
Max
25°C
(mA)
VSENSE
Max
Bi(mV)
directional
Packages
Comments
LTC6102HV
10
0.05
0.45
105
no
DFN-8, MS-8
Precision Zero Drift
LTC6102
10
0.05
0.45
70
no
DFN-8, MS-8
Precision Zero Drift
LT1787HV
75
0.5
0.12
60
yes
SO-8, MS-8
Precision, 60V VIN
LT1787
75
0.5
0.12
36
yes
SO-8, MS-8
Precision, High-Side
LTC4151
4000
0.3
80
no
DFN-10, MS-10
Integrated 12-Bit
I2C ADC
LT6106
250
1 typ
0.095
44
no
SOT23-5
Low Cost 36V
High-Side
LT6107
250
1 typ
0.095
44
no
SOT23-5
Wide Temperature
range: -55C to 150C
LT6105
300
0.5 typ
0.3
44
no
DFN-6, MS-8
Wide Input Range
-0.3V to 44V
(Independent of V+)
LTC6101HV
300
1
0.45
105
no
SOT23-5, MS-8
High Voltage,
High-Side
LTC6101
300
1
0.45
70
no
SOT23-5, MS-8
High Voltage,
High-Side
LT6100
300
1.5 typ
0.13
48
no
DFN-8, MS-8
Precision, Gain
Selectable
LTC6103
450
1.5
0.5
70
no
MS-8
Dual High Voltage,
High-Side
LTC6104
450
1.5
0.52
70
yes
MS-8
High Voltage, HighSide, Bidirectional
3nA Max
. Operating Temperature
Range: –40°C to 125°C
. PSRR: 130dB Min
. Available in 8-Lead
MSOP and 3mm × 3mm
DFN Packages
LTC6102
Demo Board
High Voltage Current Sensing with
16-Bit Resolution
ILOAD
–
VSENSE
Gain of 50 Current Sense Amplifier
RIN
100Ω
SOURCE
– 0.3V TO 44V
RIN2
VS+
100Ω
5V TO 105V
–IN
+ –
V–
5V TO 44V
R1
200Ω
+
+IN
L
O
A
D
Over-The-Top Current Sense
V+
0.02Ω
RIN1
100Ω
LT6105
+IN
+
–IN
VOUT
–
V+
VOUT = 49.9 • VSENSE
–
VOUT =
LOAD
VOUT = (VS+ – VS–) •
VOUT
(0V TO 4.3V)
ILOAD
V–
2.85V TO 36V
TO LOAD
5V
LT1636
LTC6101HV
ROUT
4.99k
+
ROUT
4.99k
VS–
OUT
RS
0.2Ω
VOUT = 1V/A
ILOAD =
ROUT
RIN
VOUT
(RS)(R2/R1)
R2
2k
ROUT
• VSENSE
RIN
Selected Op Amps for Current Sense Applications
Part No
VOS
Max
25°C
(µV)
VOS Drift
Max
25°C
(µV/°C)
ISUPPLY
Max
25°C
(mA)
SR Typ
(V/µs)
Sense
Voltage
Max (V)
LTC2050/1/2
3
0.03
1.5
2
12
LT1991
50
1
0.11
0.12
LTC4150
100
LT1636
225
5
0.055
LT1637/8/9
350
3
0.25
Packages
Comments
SOT-23, DFN-8, MSOP, SO-8,
SSOP-16
Zero Drift Amplifiers
60
DFN-10, MS-10
Precision, 100µA, Gain Selectable Difference Amplifier
9
MS-8
Coulomb Counter
0.045
44
DFN-8, DIP-8, MS-8, SO-8
Over-The-Top Micropower Op Amp
0.35
44
DFN-8, DIP-8, MS-8, SO-8,
DIP-14, SO-14
Single/Dual/Quad, High Voltage Over-The-Top Input
0.14
LT1494/5/6
375
2
0.0015
.001
36V
DIP-8, MS-8, SO-8, DIP-14, SO-14
Single/Dual/Quad, Rail-to-Rail I/O Over-The-Top
LT1490/1A
500
4
0.055
0.06
44
DFN-8, DIP-8, MS-8, SO-8,
DIP-14, SO-14
Dual/Quad, Rail-to-Rail I/O Over-The-Top
LT1990
5200
22
0.18
0.55
250
SO-8
Diff Amp, Built-In Resistors, ±250V Input
LT1995
5000
26
8.5
1000
15.5
MS-8
30Mhz Diff Amp, Built-In Resistors
* See additional applications in Linear Technology's Online Current Sense Circuit Collection: http://www.linear.com/currentsense
IND U STR IA L SIG N A L CHA I N
09
AD C D RIV ERS /F ILT ERS
High Speed Differential ADC Drivers/Filters
As new data converters are developed with higher throughput and resolution, the demands
on the circuits that drive these converters increase significantly. Several products from Linear
Technology address this challenge. Linear Technology offers high speed ADC drivers with
features such as integrated gain-setting resistors, integrated filters, low noise and distortion,
rail-to-rail operation and matched dual channels.
LTC6420-20
. Matched Gain ±0.1dB
. Matched Phase ±0.1° at 100MHz
. Channel Separation 80dB at 100MHz
. 1.8GHz –3dB Bandwidth; Fixed Gain of 10V/V (20dB)
. IMD3 = –84dBc at 100MHz, 2VP-P
. Equivalent OIP3 = 46dBm at 100MHz
. 1nV/3Hz Internal Op Amp Noise
. 6.2dB Noise Figure
. Differential Inputs and Outputs
. Rail-to-Rail Output Swing
. 80mA Supply Current (240mW) per Amplifier
. 1.1V to 1.6V Output Common Mode Voltage, Adjustable
. DC- or AC-Coupled Operation
. 20-Lead 3mm × 4mm × 0.75mm QFN Package
LTC6420 Demo Board
Matched Dual Amplifier with Output Common Mode Biasing
3V
0.1µF
1000pF
VOCM A
V+ A
ZIN = 200Ω
–IN A
100Ω
+IN A
100Ω
–
12.5Ω
+
12.5Ω
+OUT A
VOCM A
0.1µF
–OUT A
1000Ω
V–
LTC6420-20
0.1µF
VIN B
ENABLEA
1000Ω
0.1µF
VIN A
VOCM A
+IN B
100Ω
–IN B
100Ω
VOCM A
V–
±0.1dB GAIN MATCHING
±0.1° PHASE MATCHING AT 100MHz
1000Ω
12.5Ω
+
–OUT B
VOCM B
0.1µF
12.5Ω
–
+OUT B
VOCM B
1000Ω
ZIN = 200Ω
VOCM B
V+ B
0.1µF
1000pF
ENABLEB
VOCM B
3V
Differential ADC Drivers and Filters
Part No
Input
Frequency
Range
Gain
Distortion
Noise
Supply
Voltage
Supply
Current
Features
LT1994
DC-3MHz
R-Set
-94dBc @ 1MHz
3nV/ Hz
2.375V to 12.6V
14mA
Wide VS Range
LTC6403
DC-15MHz
R-Set
-89dBc @ 5MHz
2.8nV/ Hz
2.7V to 5.5V
11mA
Low Power
LT6600
DC-20MHz
R-Set
-88dBc @ 1MHz
14nV/ Hz
3V to 11V
35mA
Integrated 4th
Order Filter
LT6402
DC-30MHz
6, 12, 20dB
-84dBc @ 10MHz
1.85nV/ Hz
4V to 5.25V
30mA
Fixed Gain
LT6411
DC-30MHz
0, 6dB
-77dBc @ 30MHz
8nV/ Hz
4.5V to 12.5V
16mA
Selectable Gain
LTC6404
DC-30MHz
R-Set
-92dBc @ 10MHz
1.5nV/ Hz
2.7V to 5.5V
27mA
Low Noise
LTC6405
DC-60MHz
R-Set
-90dBc @ 20MHz
1.6nV/ Hz
2.7V to 5.25V
18mA
RR In
LTC6406
DC-60MHz
R-Set
-72dBc @ 50MHz
1.6nV/ Hz
2.7V to 3.5V
18mA
RR In
LT1993
DC-70MHz
6, 12, 20dB
-80dBc @ 50MHz
2.15nV/ Hz
4V to 5.25V
100mA
Fixed Gain
LTC6401
DC-140MHz
8, 14, 20, 26dB
-88dBc @ 70MHz
2.1nV/ Hz
2.85V to 3.5V
45mA
Fixed Gain
LTC6421
DC-140MHz
8, 14, 20, 26dB
-74dBc @ 100MHz
2.2nV/ Hz
2.85V to 3.5V
40mA
Matched Dual
LTC6400
DC-300MHz
8, 14, 20, 26dB
-81dBc @ 140MHz
2.1nV/ Hz
2.85V to 3.5V
85mA
Fixed Gain
LTC6420
DC-300MHz
8, 14, 20, 26dB
-80dBc @ 100MHz
2.2nV/ Hz
2.85V to 3.5V
80mA
Matched Dual
LTC6410-6
DC-300MHz
6dB
-62dBc @ 140MHz
11dB
2.8V to 5.25V
125mA
RF Gain Block
10
IND U STR IA L SIG N A L CHA I N
D ATA C ON V ERS ION F OR L OW F REQU EN C Y S IG N ALS
Data Conversion for Low Frequency Signals
Linear Technology’s family of No Latency Delta-Sigma analog-to-digital converters (ADCs) is unrivaled in performance, ease of use and tiny
package sizes. With ADC resolutions from 16 bits up to 24 bits, up to 16 input channels and either I2C or SPI serial interfaces, we offer a
data converter for nearly any precision measurement application. The entire delta-sigma ADC portfolio is supported with evaluation boards
and a free Quick Eval software tool (www.linear.com/company/software.jsp), complete with the DC590B USB data acquisition board.
LTC2449
. Up to Eight Differential or 16 Single-Ended Input Channels
. Up to 8kHz Output Rate, 4kHz Multiplexing Rate
. Selectable Speed/Resolution with Variable Oversampling Ratio
2µVRMS Noise at 1.76kHz Output Rate
200nVRMS Noise at 13.8Hz Output Rate with Simultaneous
50/60Hz Rejection
. No Latency Mode, Each Conversion is Accurate Even
After a New Channel is Selected
. 0.0005% INL, No Missing Codes
. Internal Oscillator—No External Components
. Tiny 5mm x 7mm QFN Package
. Differential Input and Differential Reference with GND to V
LTC2449 Demo Board
CC
Common Mode Range
Quick Eval User Interface
DC590B USB Serial Controller
No Latency Delta-Sigma ADCs (<8kHz Output Rate)
Part No
Bits
Input Channels
Sample
Rate
(sps)
LTC2440
24
1 Differential
4000
200nV
2.5µV
10ppm
LTC2442
24
2 Differential/
4 Single-Ended
8000
220nV
2.5µV
10ppm
LTC2444
24
4 Differential/
8 Single-Ended
8000
280nV
2.5µV
10ppm
LTC2445
24
4 Differential/
8 Single-Ended
8000
200nV
2.5µV
10ppm
MUXOUT/ADCIN Pins Allow
External Buffer in Front of ADC
QFN-38 (5 x 7)
LTC2446
24
4 Differential/
8 Single-Ended
8000
280nV
2.5µV
10ppm
Multiple Reference Inputs
QFN-38 (5 x 7)
LTC2447
24
4 Differential/
8 Single-Ended
8000
200nV
2.5µV
10ppm
Multiple Reference Inputs,
MUXOUT/ADCIN Pins Allow
External Buffer in Front of ADC
QFN-38 (5 x 7)
LTC2448
24
8 Differential/
16 Single-Ended
8000
280nV
2.5µV
10ppm
LTC2449
24
8 Differential/
16 Single-Ended
8000
200nV
2.5µV
10ppm
RMS
Noise
Offset
Error
Full-Scale
Error
Comments
Packages
(mm × mm)
SSOP-16
Internal Amplifiers
SSOP-36
QFN-38 (5 x 7)
QFN-38 (5 x 7)
MUXOUT/ADCIN Pins Allow
External Buffer in Front of ADC
QFN-38 (5 x 7)
IND U STR IA L SIG N A L CHA I N
D ATA C ON V ERS ION F OR L OW F REQU EN C Y S IG N ALS
Easy Drive™ and Ultra-Tiny Delta-Sigma ADCs
Voted one of Electronic Design’s ADCs of the Year in 2007, the LTC2450 family of ultra-tiny ADCs are ideal for measuring automotive
signals such as temperature, pressure and viscosity. For higher precision applications, Linear offers a complete family of single channel,
dual channel, and eight channel pin- and software-compatible 24-bit and 16-bit Easy Drive ADCs.
Ultra-Tiny Delta Sigma ADCs
Part No
Bits
Input Channels
(Differential/SingleEnded)
LTC2450
16
1
1.4µV
SPI
60Hz
0.05%
DFN-6 (2 x 2)
LTC2451
16
1
1.4µV
I2C
60Hz
0.05%
DFN-8 (3 x 2), TSOT23-8
LTC2452
16
1
1.4µV
SPI
60Hz
0.05%
DFN-8 (3 x 2), TSOT23-8
LTC2453
16
1
1.4µV
I2C
60Hz
0.05%
DFN-8 (3 x 2), TSOT23-8
LTC2480
16
1
0.6µV
SPI
15Hz
0.004%
•
•
DFN-10 (3 x 3)
15Hz
0.004%
•
•
DFN-10 (3 x 3)
RMS
Noise
I/O
Sample
Rate
Total
Unadjusted
Error (Max)
2
PGA
Temp
Sensor
Packages (mm x mm)
LTC2481
16
1
0.6µV
IC
LTC2482
16
1
0.6µV
SPI
7.5Hz
0.004%
DFN-10 (3 x 3)
LTC2483
16
1
0.6µV
I2C
7.5Hz
0.004%
DFN-10 (3 x 3)
LTC2484
24
1
0.6µV
SPI
15Hz
0.004%
•
DFN-10 (3 x 3)
•
DFN-10 (3 x 3)
2
LTC2485
24
1
0.6µV
IC
15Hz
0.004%
LTC2486
16
2/4
0.6µV
SPI
15Hz
0.004%
•
•
DFN-14 (4 x 3)
LTC2487
16
2/4
0.6µV
I2C
15Hz
0.004%
•
•
DFN-14 (4 x 3)
LTC2488
16
2/4
0.6µV
SPI
7.5Hz
0.004%
DFN-14 (4 x 3)
DFN-14 (4 x 3)
2
LTC2489
16
2/4
0.6µV
IC
7.5Hz
0.004%
LTC2492
24
2/4
0.6µV
SPI
15Hz
0.004%
•
DFN-14 (4 x 3)
LTC2493
24
2/4
0.6µV
I2C
15Hz
0.004%
•
DFN-14 (4 x 3)
LTC2494
16
8/16
0.6µV
SPI
15Hz
0.004%
•
•
DFN-38 (5 x 7)
15Hz
0.004%
•
•
DFN-38 (5 x 7)
2
LTC2495
16
8/16
0.6µV
IC
LTC2496
16
8/16
0.6µV
SPI
7.5Hz
0.004%
DFN-38 (5 x 7)
LTC2497
16
8/16
0.6µV
I2C
7.5Hz
0.004%
DFN-38 (5 x 7)
LTC2498
24
8/16
0.6µV
SPI
15Hz
0.004%
•
DFN-38 (5 x 7)
15Hz
0.004%
•
DFN-38 (5 x 7)
LTC2499
24
8/16
2
0.6µV
IC
LTC2492 Allows Easy Measurement of Multiple Thermistors or High Impedance Sensors
5V
5V
R1
51.1k
C4
0.1µF
12
10µF
IIN+ = 0
R3
10k TO 100k
0.1µF
C3
0.1µF
R4
51.1k
IIN– = 0
REF +
14
REF–
9
11
+
0.1µF
10k TO 100k
10
5V
102k
7
1k
LT1494
–
1
FO
= EXTERNAL OSCILLATOR
= INTERNAL OSCILLATOR
LTC2492
13
8
5V
VCC
CH0
2
SDI
3
SCK
SDO
3-WIRE
SPI INTERFACE
5
CH1
CH2
4
CS
CH3
COM
GND
6
0.1µF
1k
0.1µF
Ultra-Tiny ADC Demo Board
11
12
IND U STR IA L SIG N A L CHA I N
S IMU LTAN EOU S S AMPL IN G AD C s
General Purpose SAR ADCs
Linear offers a wide range of general purpose ADCs from 8 bits, 12 bits, up to 16 bits. These SAR ADCs feature excellent AC and DC
performance with low power. From single input channel to multiplexed/simultaneous sampling applications, Linear has the right general
purpose/SAR ADC for you.
LTC2351
. 1.5Msps ADC with Six Simultaneously
Simultaneous Sampling ADCs
Sampled Differential Inputs
. 250ksps Throughput per Channel
. 75dB SINAD
. 3V Single Supply Operation
(16.5mW @ 1.5Msps)
. 2.5V Internal Reference, Can be
Overdriven with External Reference
. 3-Wire SPI-Compatible Serial Interface
. 0V to 2.5V Unipolar, or ±1.25V Bipolar
Differential Input Range
Part No
Bits
Input
Channels
Input Range
Sample
Rate
Packages
(mm x mm)
LTC2351-14
14
6 Differential
0V–2.5V or ±1.25V
1.5Msps
QFN-32 (5 x 5)
LTC1408
14
6 Differential
0V–2.5V or ±1.25V
600ksps
QFN-32 (5 x 5)
LTC1407A
14
2 Differential
0V–2.5V
3Msps
MSOP-10
LTC1407A-1
14
2 Differential
±1.25V
3Msps
MSOP-10
LTC2351-12
12
6 Differential
0V–2.5V or ±1.25V
1.5Msps
QFN-32 (5 x 5)
LTC1408-12
12
6 Differential
0V–2.5V or ±1.25V
600ksps
QFN-32 (5 x 5)
LTC1407
12
2 Differential
0V–2.5V
3Msps
MSOP-10
LTC1407-1
12
2 Differential
±1.25V
3Msps
MSOP-10
. Small 32-Pin (5mm × 5mm) QFN Package
LTC2351-14 Block Diagram
10µF
CH5–
21
CH4–
18
CH3–
15
12
13
CH2–
CH2+
11
–
10
S AND H
S AND H
9
CH1–
CH1+
8
–
7
CH0–
6
CH0+
5
–
S AND H
VDD
VCC
24
4
+
–
CH3+
14
+
S AND H
16
+
–
CH4+
17
+
S AND H
19
+
+
–
CH5+
20
3V
S AND H
1.5Msps
12-BIT ADC
25
12-BIT LATCH 0
12-BIT LATCH 1
12-BIT LATCH 2
12-BIT LATCH 3
12-BIT LATCH 4
12-BIT LATCH 5
THREESTATE
SERIAL
OUTPUT
PORT
3
1
2
OVDD
3V
SD0
OGND
MUX
TIMING
LOGIC
2.5V
REFERENCE
30
32
31
33
22
GND
10µF
23
29
VREF
BIP
26
27
SEL2 SEL1
28
SEL0
CONV
SCK
DGND
0.1µF
IND U STR IA L SIG N A L CHA I N
13
FAS T, T IN Y S IN G LE C H AN N EL AD C s
Fast, Tiny Single Channel ADCs
LTC2366
LTC2366: 3Msps 12-Bit ADC
. 12-Bit Resolution
. Pin- and Software-Compatible 3Msps/1Msps/
3V
LTC2366
10µF
500ksps/250ksps/100ksps Family
. Low Noise: 73dB SNR
. Low Power Dissipation: 6mW @ 1Msps
. Single Supply 2.35V to 3.6V Operation
. No Data Latency
. Sleep Mode with 0.1µA Typical Supply Current
. Dedicated External Reference and OVDD Digital
ANALOG INPUT
0V TO 3V
VDD
CS
VREF
SDO
GND
SCK
AIN
OVDD
SERIAL DATA LINK TO
ASIC, PLD, MPU, DSP
OR SHIFT REGISTERS
4.7µF
DIGITAL OUTPUT SUPPLY
1V TO 3.6V
Output Supply
. SPI/MICROWIRE-Compatible Serial I/O
. Guaranteed Operation from –40°C to 125°C
. Tiny 6- and 8-Lead TSOT-23 Plastic Packages
Fast, Tiny Single Channel ADCs
I/O
Power @
Max Sample
Rate
Maximum Ambient
Temperature
Packages
Part No
Bits
Sample
Rate
LTC2355-14
14
3.5Msps
3.1V–3.6V
0V–2.5V
Serial
18mW
85°C
MSOP-10
LTC2356-14
14
3.5Msps
3.1V–3.6V
±1.25V
Serial
18mW
85°C
MSOP-10
LTC1403A
14
2.8Msps
2.7V–3.6V
0V–2.5V
Serial
12mW
125°C
MSOP-10
LTC1403A-1
14
2.8Msps
2.7V–3.6V
±1.25V
Serial
12mW
85°C
MSOP-10
LTC1414
14
2.2Msps
±5V
±2.5V
Parallel
175mW
85°C
SSOP-28
LTC2355-12
12
3.5Msps
3.1V–3.6V
0V–2.5V
Serial
18mW
85°C
MSOP-10
LTC2356-12
12
3.5Msps
3.1V–3.6V
±1.25V
Serial
18mW
85°C
MSOP-10
LTC2366
12
3Msps
2.35V–3.6V
0V–3.6V
Serial
7.8mW
125°C
TSOT23-6/8
LTC1412
12
3Msps
±5V
±2.5V
Parallel
150mW
85°C
SSOP-28
LTC1403
12
2.8Msps
2.7V–3.6V
0V–2.5V
Serial
12mW
125°C
MSOP-10
LTC1403-1
12
2.8Msps
2.7V–3.6V
±1.25V
Serial
12mW
85°C
MSOP-10
LTC2365
12
1Msps
2.35V–3.6V
0V–3.6V
Serial
6mW
125°C
TSOT23-6/8
LTC2362
12
500ksps
2.35V–3.6V
0V–3.6V
Serial
3.3mW
125°C
TSOT23-6/8
LTC2361
12
250ksps
2.35V–3.6V
0V–3.6V
Serial
2.2mW
125°C
TSOT23-6/8
LTC2360
12
100ksps
2.35V–3.6V
0V–3.6V
Serial
1.5mW
125°C
TSOT23-6/8
VCC
Input Range
IND U STR IA L SIG N A L CHA I N
G EN ERAL PU RPOS E AN ALOG -T O-D IG ITAL C ON V ERT ERS
General Purpose ADCs
LTC1867
16-Bit, 8-Channel, 200ksps ADC
. 8 Single-Ended Inputs, 4 Differential Inputs, or
5V
Combinations of Both
. 16-Bit No Missing Codes and ±2LSB INL (Max)
. Sample Rate: 200ksps
. Unipolar or Bipolar Conversion Modes
. Internal or External Reference
. Low Power: 1.3mA at 200ksps, 0.76mA at 100ksps
CH0
LTC1867
CH1
16-BIT
– 200ksps
ADC
CH3
CH4
CH5
SDI
+
CH2
ANALOG
INPUT
MUX
SDO
SERIAL
PORT
SCK
CS/CONV
CH6
Supply Current vs
Sampling Frequency
VREF
2.2µF
2.5V
REF
CH7/COM
REFCOMP
2.0
S U P P LY C U R R E N T (mA)
14
10µF
1.5
1.0
0.5
0.01
1
10
100
1000
f S A MP LE (k s p s )
LTC1867 Demo Board
Low Power Serial ADCs
Input Span
VCC
Power (mW)
I/O
Packages
(mm x mm)
200 (175)
0V – 4.096V or ±2.048 (0V
– 2.5V or ±1.25V)
5V (3V)
6.5 (2.25)
SPI
SSOP-16
2 Single-Ended
250 (150)
0V– 5V (0V to 3V)
5V (3V)
4.25 (2.25)
SPI
SO-8, MSOP-10
16
1 Differential
250 (150)
0V– 5V (0V to 3V)
5V (3V)
4.25 (1.22)
SPI
SO-8, MSOP-8
LTC2308
12
8 Single-Ended/
4 Differential
500
0V– 4.096V or ±2.048
5V
17.5
SPI
QFN-24 (4 x 4)
LTC1863 (L)
12
8 Single-Ended/
4 Differential
200 (175)
0V– 4.096V or ±2.048 (0V
– 2.5V or ±1.25V)
5V (3V)
6.5 (2.25)
SPI
SSOP-16
LTC2309
12
8 Single-Ended/
4 Differential
14
0V– 4.096V or ±2.048
5V
11.5
I2C
QFN-24 (4 x 4)
LTC2306
12
2 Single-Ended
500
0V– 5V
5V
14
SPI
DFN-10 (3 x 3)
LTC1861 (L)
12
2 Single-Ended
250 (150)
0V– 5V (0V to 3V)
5V (3V)
4.25 (2.25)
SPI
SO-8, MSOP-10
LTC2302
12
1 Differential
500
0V– 5V
5V
14
SPI
DFN-10 (3 x 3)
LTC1860 (L)
12
1 Differential
250 (150)
0V– 5V (0V– 3V)
5V (3V)
4.25 (1.22)
SPI
SO-8, MSOP-8
Part No
Bits
Input Channels
LTC1867(L)
16
8 Single-Ended/
4 Differential
LTC1865 (L)
16
LTC1864 (L)
(L) Signifies VCC = 3V
Sample
Rate (ksps)
IND U STR IA L SIG N A L CHA I N
15
S OF T S PAN AD C s F OR WID E IN PU T RAN G E APPLIC AT ION S
SoftSpan™ ADCs for Wide Input Range Applications
LTC1859
16-Bit, 8-Channel ADC with Software Programmable Input Ranges
. Sample Rate: 100ksps
. 8-Channel Multiplexer with ±25V Protection
. Single 5V Supply
. Software-Programmable Input Ranges:
+15V
–
COM
LT1639
10k
+
-15V
12V TO 25V
. Fixed ±10V Input Range
SETRA 206
(LTC1856/LTC1855/LTC1854)
. 8 Single-Ended or 4 Differential Inputs
. 28-Pin SSOP Package
PRESSURE INPUT
UP TO 10,000psi
RD
SCK
µP
CH2
SDI
CONTROL
CH3
DGND
CH4
SDO
CH5
BUSY
CH1
0V to 5V, 0V to 10V, ±5V or ±10V
(LTC1859/LTC1858/LTC1857)
CONVST
CH0
LTC1859
CH6
OVDD
3V TO 5V
CH7
DVDD
5V
MUXOUT+
MUXOUT–
AVDD
ADC+
ADC–
5V
AGND3
10µF
10µF
10µF
AGND2
REFCOMP
VREF
AGND1
SOFTWARE-PROGRAMMABLE
SINGLE-ENDED OR
DIFFERENTIAL INPUTS
(0V TO 5V, 0V TO 10V, ±5V OR ±10V)
LINES
1µF
10µF
±10V ADCs (Software-Programmable or Resistor-Selectable)
Sample
Rate
(ksps)
Max
DNL
(LSB)
Max
INL
(LSB)
Part No
Bits
Input
Channels
Input Span
VCC
Power
(mW)
I/O
Packages
LTC1859
16
8
100
Software-Programmable
0V–5V, 0V–10V, ±5V, or ±10V
5V
40
2
3
Serial
SSOP-28
LTC1856
16
8
100
±10V
5V
40
2
3
Serial
SSOP-28
LTC1605
16
1
100
±10V, ±4V, 0V–4V
5V
55
1
2
Parallel
PDIP-28, SSOP-28, SW-28
LTC1606
16
1
250
±10V
5V
75
1
2
Parallel
PDIP-28, SSOP-28, SW-28
LTC1609
16
1
200
0V– 5V, 0V–10V, 0V– 4V, ±10V,
±5V, ±3.3V
5V
65
1
2
Serial
SSOP-28, SW-28
LTC1858
14
8
100
Software-Programmable
0V–5V, 0V–10V, ±5V, or ±10V
5V
40
1
1.5
Serial
SSOP-28
LTC1855
14
8
100
±10V
5V
40
1
1.5
Serial
SSOP-28
LTC1857
12
8
100
Software-Programmable
0V–5V, 0V–10V, ±5V, or ±10V
5V
40
1
1
Serial
SSOP-28
LTC1854
12
8
100
±10V
5V
40
1
1
Serial
SSOP-28
16
IND U STR IA L SIG N A L CHA I N
H IG H S PEED D ATA AC QU IS IT ION
High Speed ADCs
Linear’s high speed ADCs offer the lowest power consumption and highest AC performance in the industry. They incorporate many
unique features to ease system design and space constraints, including integrated bypass capacitance and integrated series resistance
for 501 digital outputs. The entire high speed ADC portfolio is supported with evaluation boards and a free Quick Eval-II PScope
software tool (www.linear.com/company/software.jsp).
LTC2209
. Sample Rate: 160Msps
. 77.3dBFS Noise Floor
. 100dB SFDR
. PGA Front End (2.25VP-P or
1.5VP-P Input Range)
. 700MHz Full Power Bandwidth S/H
. Optional Internal Dither
. Optional Data Output Randomizer
. LVDS or CMOS Outputs
. Single 3.3V Supply
. Power Dissipation: 1.45W
. 64-Pin (9mm x 9mm QFN Package)
LTC2209 Demo Board
DC890B USB Interface Board
High Speed ADC Snapshot
Part No
Bits
Sample Rate
ADCs
SNR
SFDR
Full Power
Bandwidth
Power
Dissipation
LTC2209
16
160Msps
1
77.4dB
100dB
700MHz
1450mW
LTC2208
16
130Msps
1
77.7dB
100dB
700MHz
1250mW
LTC2207
16
105Msps
1
77.9dB
100dB
700MHz
900mW
LTC2206
16
80Msps
1
77.9dB
100dB
700MHz
725mW
LTC2205
16
65Msps
1
79.0dB
100dB
700MHz
610mW
LTC2204
16
40Msps
1
79.1dB
100dB
700MHz
480mW
LTC2203
16
25Msps
1
81.6dB
100dB
380MHz
220mW
LTC2202
16
10Msps
1
81.6dB
100dB
380MHz
140mW
LTC2285
14
125Msps
2
72.4dB
88dB
640MHz
790mW
LTC2255
14
125Msps
1
72.4dB
88dB
640MHz
395mW
LTC2242-12
12
250Msps
1
65.4dB
78dB
1.2GHz
740mW
IND U STR IA L SIG N A L CHA I N
17
H IG H S PEED D ATA AC QU IS IT ION
Signal Chain Module
The LTM® 9001 signal chain module integrates a high speed ADC,
a fixed-gain ADC driver amplifier, the bypass capacitance and the
anti-alias filter components. This System in Package (SiP) module
is 11.25mm x 11.25mm, which is about half of the board space for
the equivalent circuit if done discretely. Demo boards are available
today. Contact your local LTC sales engineer.
LTM9001-AA Demo Board
The LTM9001 Signal Chain Module Incorporates an ADC, Amplifier and Filtering
VCC = 3.3V
VDD = 3.3V
SENSE
LTM9001
0VDD = 0.5V TO 3.6V
D15
IN
RF
–
ANTI-ALIAS
FILTER
SAW
16-BIT
130Msps ADC
IN+
LO
•
•
•
D0
CLKOUT
OF
DIFFERENTIAL
FIXED GAIN
AMPLIFIER
OGND
GND
ENC+ ENC–
ADC CONTROL PINS
CMOS
OR
LVDS
18
IND U STR IA L SIG N A L CHA I N
U LT RA-T IN Y 1 2 -/1 0 -/8 -BIT D AC S / C OMPAC T MIC ROPOWER D AC S
Ultra-Tiny 12-/10-/8-Bit DACs with Internal Reference
Linear Technology’s DACs work well in a wide variety of open-loop or closed-loop systems, adjusting gain, offset and many
other signals. From 8-bit singles to 16-bit octals, serial or parallel I/O, Linear has a DAC to suit your application.
LTC2630/LTC2631/LTC2640
. Integrated Precision Reference:
2.5V Full Scale 10ppm/°C (LTC2630-L)
4.096V Full Scale 10ppm/°C (LTC2630-H)
. Maximum 12-Bit INL Error: 1LSB
. Guaranteed Monotonic Over Temperature
. Selectable Internal Reference or Supply as
. Low Power Operation: 180µA at 3V, 1.8µA (Max) Shutdown Mode
. Guaranteed Operation to 125°C
. Power-On Reset to Zero or Midscale Options
. Tiny 6-Lead SC70 Package (LTC2630)
. Tiny 8-Lead TSOT-23 Packages (LTC2631, LTC2640)
Single DACs
w/ Internal
Reference
Reference (LTC2630)
. Bidirectional Reference: External Input or
10ppm/°C Output (LTC2631/LTC2640)
. SPI Serial Interface (LTC2630/LTC2640)
. I2C Serial Interface (LTC2631)
. 2.7V to 5.5V Supply Range (LTC2630-L)
Single DACs w/ Reference
Input/Output
Resolution
SPI
I2C
SPI
Maximum
Ambient
Temperature
12-Bit
LTC2630-12
LTC2631-12
LTC2640-12
125°C
10-Bit
LTC2630-10
LTC2631-10
LTC2640-10
125°C
8-Bit
LTC2630-8
LTC2631-8
LTC2640-8
125°C
Compact, Micropower DACs for Control Loop Applications
. Smallest Pin-Compatible DAC Family:
Compact, Micropower DACs for Control Loop Applications
Single, Dual, Quad and Octal
LTC2600: 16 Bits
LTC2610: 14 Bits
LTC2620: 12 Bits
. Guaranteed 16-Bit Monotonic Over
Temperature
. Wide 2.5V to 5.5V Supply Range
. Low Power Operation
. Individual Channel Power-Down to 1µA, Max
. Ultralow Crosstalk Between DACs (<10µV)
. High Rail-to-Rail Output Drive (±15mA, Min)
. Double-Buffered Digital Inputs
LTC2601 Demo Board, Single
16-Bit DAC in 3mm x 3mm
Package. Demo Board works
with QuickEval System.
Part No
Bits
DAC
Outputs
I/O
Packages
Power
(mW)
VCC
LTC2600/
LTC2610/
LTC2620
16/14/12
8
SPI
SSOP-16
20
2.5V–5.5V
LTC2604/
LTC2614/
LTC2624
16/14/12
4
SPI
SSOP-16
10
2.5V–5.5V
LTC2602/
LTC2612/
LTC2622
16/14/12
2
SPI
MSOP-8
6.5
2.5V–5.5V
LTC2601/
LTC2611/
LTC2621
16/14/12
1
SPI
DFN-10
1.875
2.5V–5.5V
LTC2605/
LTC2615/
LTC2625
16/14/12
8
I2C
SSOP-16
20
2.7V–5.5V
LTC2609/
LTC2619/
LTC2929
16
4
I2C
SSOP-16
10
2.7V–5.5V
LTC2607/
LTC2617/
LTC2627
16
2
I2C
MSOP-8
6.5
2.7V–5.5V
LTC2606/
LTC2616/
LTC2626
16
1
I2C
DFN-10
1.875
2.7V–5.5V
LTC1660/
LTC1665
10/8
8
SPI
SSOP-16
1
2.7V–5.5V
LTC1664
10
4
SPI
SSOP-16
1
2.7V–5.5V
LTC1662
10
2
SPI
MSOP-8
0.017
2.7V–5.5V
TSOT23-5,
MSOP-8
0.375
2.7V–5.5V
LTC1669
10
1
2
IC
IND U STR IA L SIG N A L CHA I N
19
RMS -T O-D C C ON V ERT ERS
RMS-to-DC Converters
Linear Technology’s simple, true RMS-to-DC converters use an innovative delta-sigma computational technique that features high
linearity and accuracy suitable for a wide variety of AC measurement applications.
LTC1968
. High Linearity: 0.02% Linearity Allows Simple System Calibration
. Wide Input Bandwidth: Bandwidth to 0.1% Additional Gain
RMS Noise Measurement
VOLTAGE
NOISE IN
2.5V
2.5V
Error: 40kHz
+
. No-Hassle Simplicity: True RMS-to-DC Conversion with Only One
100Ω
External Capacitor
. Low Supply Current: 330µA
. Flexible Inputs: Differential or Single Ended
. Flexible Output: Rail-to-Rail Output
. Small Size: Space-Saving 8-Pin MSOP Package
1k
1/2
LT6203
–
–2.5V
100Ω
VOUT =
V+
IN1
VOUT
1mVDC
1µVRMS OF INPUT NOISE
CAVE
10µF
LTC1968
IN2 OUT RTN
EN
GND
100k
0.1µF
1.5µF
–2.5V
BW 1kHz TO 100kHz
INPUT SENSITIVITY = 1µVRMS TYP
L I N E A R I TY E R R OR
( V OUT m V DC – V IN m V A C RMS )
Linearity Performance
0.2
LTC1968, ΔΣ
0
-0.2
-0.4
-0.6
CONVENTIONAL
LOG/ANTILOG
-0.8
LTC1968 Demo Board
60Hz SINEWAVE
-1.0
0
100
200
300
400
500
V IN (mV AC RMS )
RMS-to-DC Converters
Part No
1% Error Bandwidth
(Typ) kHz
3dB Error Bandwidth
(Typ) kHz
Max Linearity
Error (%)
Max Conversion
Gain Error (%)
VS Max
(V)
ISUPPLY
Max 25°C
(mA)
Package
LTC1966
6
800
0.15
0.3
12
0.17
MSOP-8
LTC1967
200
4000
0.15
0.3
6
0.39
MSOP-8
LTC1968
500
15000
0.15
0.3
6
2.3
MSOP-8
20
IND U STR IA L SIG N A L CHA I N
PREC IS ION REF EREN C ES
Precision References
Linear Technology offers a broad line of series and shunt precision voltage references, where some are designed to operate in either
shunt or series mode. Linear’s references offer excellent initial accuracy and low drift over time and temperature.
LT6650
The LT6650 combines a 400mV
reference and a buffer to provide a
programmable output voltage.
Full-Bridge Load Current Monitor
VAUTOMOTIVE
5V
R5
900k
LT1990
. Low Quiescent Current: 5.6µA (Typ)
. Wide Supply Range: 1.4V to 18V
. 400mV Reference ±1% Maximum Accuracy
R1
1M
Over Temperature at 5V
–+
. Rail-to-Rail Buffer Amplifier
. 0.5% 400mV Maximum Initial
RS
R6
100k
–
VOUT
+
IL
R2
1M
VREF = 1.5V
Accuracy at 5V
OUT
IN
. Shunt Configurable
. Sinks and Sources Current
. Wide Operational Range –40°C to 125°C
. Externally Adjustable Output Voltage
. Low Profile 1mm 5-Lead SOT-23
R7
100k
LT6650
_ VCM <
_ 73V
–12 <
VOUT = VREF ± (10 • IL • RS)
54.9k
R3
40k
1nF
FB
R10
100k
R4 R8
40k 900k
R9
100k
GND
30k
1µF
FOR RS = 1m:
VOUT = 0.5V for IL = 100A
VOUT = 1.5V for IL = 0A
VOUT = 2.5V for IL = –100A
(ThinSOT™) Package
Selected Precision References
Max
Accuracy Drift
(%)
(ppm/°C)
Package
ISUPPLY*
Min
Line
In/Out
RegMax
Voltage (V) (ppm/V)
1.25, 2.048, 2.5,
33.3, 4.049, 5
0.05
10
SOT-23-6
60µA
0.1
170
High Precision SOT-23
Reference
Series
2.5, 3, 4, 5
0.04
3
SO-8
50µA
0.3
6
Precision LDO with Shutdown
LT1460
Series
2.5, 3, 3.3, 5, 10
0.075
10
SO-8, MS-8, 130µA
DIP-8,
TO-12
0.9
25
Output Capacitor Optional
LT1236
Both
5, 10
0.05
5
SO-8, DIP
2.2
6
Tight Tolerance and Low TC
LT1634
Shunt
1.25, 2.5, 4.096, 5
0.05
10
MS-8, SO-8 7µA
N/A
N/A
Micropower, Precision Shunt
LT1019
Both
2.5, 4, 5, 10
0.05
5
DIP-8,
TO-5, SO-8
1mA
1.1
3
High Line Rejection
LT6650
Series
-18–18
0.5
30 typ
SOT-23
11µA
0.1
900
400mV Ref with Rail-to-Rail
Amplifier
LT6660
Series
2.5, 3, 3.3, 5, 10
0.2
20
DFN
180µA
0.9
800
Micropower Precision Series
LTC6652
Series
1.25, 2.048, 2.5, 3,
3.3, 4.096, 5
0.05
5
MS-8
560µA
0.3
50
Precision, Low Drift, Low
Noise
Part No
Series/
Shunt
Reference Values
(V)
LT1790
Series
LT1461
1.2mA
Comment
*Min Operating Current for Series Operation or Max Quiescent for Shunt Operation
IND U STR IA L SIG N A L CHA I N
21
S IL IC ON OS C ILLAT ORS
Silicon Oscillators
Linear Technology’s silicon oscillators generate precisely controlled square wave clock signals. These low power solid-state devices
are resistant to shock and vibration, have fast start-up characteristics and offer a wide range of output frequencies that are set
by a single resistor, by strapping pins, or through a digital serial interface. They are useful for general system timing as well as for
synchronizing switching regulators.
LTC6906
. Micropower: 65µA Max at 1MHz
. Resistor Programmable: 10kHz to 1MHz
. 1% accuracy @ 25°C
Micropower Clock Generator
NO DECOUPLING
CAPACITOR
NEEDED
LTC6906
Demo Board
(1.5% over 0°C to 70°C)
. Supply Voltage and Current:
LTC6906
2.25V TO 3.6V
.10
.3
.1
2V to 5.5V, IS = 25µA at 100kHz
. No Decoupling Capacitor Needed
. Start-Up Time Under 100µ at 1MHz
V+
OUT
GND
GRD
DIV
SET
10kHz TO 1MHz
RSET
100k TO 1M
First Cycle After Power-Up is Accurate
. CMOS Output Driver
. Low Profile (1mm) SOT-23 Package
Silicon Oscillators
Part No
Program
Method
Frequency
Range
Frequency
Accuracy
Max 25°C
Frequency
Drift
IS Max
VS = VMIN (µA)
Package
Comments
LTC1799
Resistor
1kHz–30MHz
1.50%
40ppm/°C
1.1@3MHz
SOT-23
General Purpose
LTC6900
Resistor
1kHz–20MHz
1.50%
40ppm/°C
0.86@10MHz
SOT-23
Low Power
LTC6902
Resistor
5kHz–20MHz
1.50%
40ppm/°C
1.8@10MHz
MS-10
4 Outputs, Spread Spectrum
LTC6903
Serial–SPI
1kHz–68MHz
1.10%
10ppm/°C
3.1@5MHz
MS-8
SPI Interface
2
LTC6904
Serial–I C
1kHz–68MHz
1.10%
10ppm/°C
3.1@5MHz
MS-8
I²C Interface
LTC6905
Resistor
17MHz–170MHz
1.40%
20ppm/°C
5@21MHz
SOT-23
High Frequency
LTC6905-xxx
Fixed
20MHz–133MHz
1.00%
20ppm/°C
15@133MHz
SOT-23
No Freq Set Resistor Required
LTC6906
Resistor
10KHz – 1MHz
0.50%
50ppm/°C
.015@100kHz
SOT-23
Micropower
LTC6907
Resistor
40KHz–4MHz
0.50%
50ppm/°C
.036@400kHz
SOT-23
Micropower
LTC6908-x
Resistor
50kHz–10MHz
1.50%
40ppm/°C
1.6@5MHz
SOT-23, DFN-6
2 Outputs, Spread Spectrum
LTC6930-x
Pin-Set
32.678kHz–
8.192MHz
0.09%
1ppm/°C
0.43@5MHz
DFN-8, MS-8
8 Pin-Selectable Frequencies
per Device
, LTC, LT, LTM and Over-The-Top are registered trademarks and Easy Drive, No Latency, Delta-Sigma, SoftSpan and ThinSOT are trademarks of Linear Technology
Corporation. All other trademarks are the property of their respective owners.
© 2008 Linear Technology Corporation.
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