Datasheet Industrial Signal Chain Datasheet (LINEAR TECHNOLOGY)

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

analog and mixed-signal base parts

specified from -40°C to 85°C or

beyond for the most demanding

industrial signal chain applications.

COMPARATOR, 29

AMPLIFIER, 170

OSCILLATOR, 9

REFERENCE, 12

FILTER, 13

MUX, 5

ADC, 162

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

PRECISION REFERENCES–pg 20

DACs

Micropower Voltage Output–pg 18

SILICON OSCILLATORS–pg 21RMS-DC CONVERSION–pg 19

02

INDUSTRIAL SIGNAL CHAIN

PRECISION OPERATIONAL AMPLIFIERS

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.

®

1637

LT

.

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;

plus a Tiny (3mm × 3mm × 0.8mm) DFN Package

Precision Op Amps

Switchable Precision Current Source

+

R*

LT1004-1.24.7µF

2k

+

LT1637

–

SHDN

*OPTIONAL FOR LOW OUTPUT CURRENTS,

R* = R

I

OUT

R

TP0610

4V TO 44V

1.2

=

I

OUT

R

e.g., 10mA = 1201

Amplifiers
per

Part No

LTC®2054/5 1/2 3 0.03 0.15 140 – 0.5 Out 0.15 2.7–7

LTC2050/1/2 1/2/4 3 0.03 0.075 140 – 3 Out 1.2 2.7–7

LTC2050/1/2HV 1/2/4 3 0.03 0.15 140 – 3 Out 1.5 2.7–12

LTC2054/5HV 1/2 5 0.03 0.15 140 – 0.5 Out 0.18 2.7–12

LTC1150/1 1/2 5 0.05 0.1 – – 2.5 – 1.5 4.75–32

LT1007 1 25 0.6 35 146 2.5 8 – 4 4–44

LTC6078/9 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

Package

V

OS

Max 25°C
(µV)

VOS TC
Max
(µV/°C)

I

B

Max 25°C
(nA) A

VOL

(dB)

e

n

(nV/ Hz)
Ty p

GBW
(MHz)

Rail-to­Rail

IS/Amp
Max
(mA) V

SUPPLY

(V)

INDUSTRIAL SIGNAL CHAIN

Low Bias Current Operational Amplifiers

LOW BIAS CURRENT OPERATIONAL AMPLIFIERS

03

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.

LTC6078

.

Maximum Offset Voltage of 25µV (25°C)

.

Maximum Offset Drift of 0.7µV/°C

.

Maximum Input Bias:

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

Thermocouple Signal Conditioner

NORMALLY

FLOATING

OMEGA
5TC-TT-K-30-36
THERMOCOUPLE

SMT
1/4W
150k

SMT
1/4W
150k

LT1025

5V

K

0.1µF

40.6

µV/∞C

100pF

Input Bias vs Temperature

180

VS = 5V
V

= 2.5V

CM

160

140

120

100

80

60

40

INPUT BIAS CURRENT (pA)

20

0

0

TEMPERATURE ('C)

5V

+

1/2

LTC6078

–

1k

2.49M

10k

5.6pF

10025 50 75 125

OUT = 10mV/∞C
0∞C TO 500∞C ±0.5∞C

AMPLIFIER PROTECTED TO ±190V, ACCIDENTAL CONTACT

Low Bias Current Op Amps

V
Amplifiers
per

Products

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

Package

OS

Max

25°C

(µV)

TCV
Max
(µV/°C)

I

B

Max
25°C
(pA)

e

n

Ty p
(nV/ Hz)

OS

GBW
Ty p
(MHz)

SR
Ty p
(V/µs)

IS/Amp
Max
25°C
(mA) V

(V) Packages

SUPPLY

04

A

INDUSTRIAL SIGNAL CHAIN

Low Power Operational Amplifiers

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.

LT6003

.

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

.

A

Driving 20k Load: 100,000 Min

VOL

.

Capacitive Load Handling: 500pF

.

Specified from –40°C to 125°C

.

Tiny 2mm x 2mm DFN or SOT-23 Package

Micropower Oxygen Sensor

100k

OXYGEN SENSOR

TECHNOLOGY

CITY

4OX(2)

www.citytech.com

VOS Distribution

35

= 5V, 0V

V

S

= 2.5V

V

CM

30

MS8 PACKAGE
1377 AMPLIFIERS

25

20

15

10

PERCENT OF UNITS (%)

5

1%

100k

1%

100Ω
1%

10M

1%

LT6003

1.6V

V

OUT

I

SUPPLY

= 1V IN AIR

= 0.95µ

0

–400 –200 0 200 400 600–600

INPUT OFFSET VOLTAGE (µV)

Low Power Op Amps

Amplifiers
per

Part No

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,

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,

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,

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

Package

IS/Amp

(mA)

Max VOS (mV) IB (nA)

e

n

(nV/ Hz)
Ty p

GBW
(MHz)
Ty p V

SUPPLY

Rail-to-

(V)

Rail Packages

MS-8, DFN-16, TSSOP-16

SO-14

SSOP-16

INDUSTRIAL SIGNAL CHAIN

Speed + Precision Operational Amplifiers

SPEED + PRECISION OPERATIONAL AMPLIFIERS

05

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.

LTC6244

.

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: 1.5µV

.

Slew Rate: 40V/µs

.

Gain Bandwidth Product: 50MHz

.

Output Swings Rail-to-Rail

.

Supply Operation:

P-P

2.8V to 6V LTC6244

.

Low Input Capacitance: 2.1pF

Speed + Precision Operational Amplifiers

Very Low Noise Large Area Photodiode

0.25pF

5V

PHILIPS

BF862

JFET

4.99k

–5V

I

4.7µF*

4.99k

V

BB

HAMAMATSU LARGE

* CAN BE MICROPHONIC, FILM, X7R, IF NEEDED.

PD

PHOTODIODE

S1227-1010BQ

= 3000pF

C

PD

NUMBER OF UNITS

AREA

VOS Distribution

120

110

100

90

80

70

60

50

40

30

20

10

0

–60 –40

1M

5V

–

1/2

LTC6244HV

+

–5V

LTC6244MS8

= 5V, 0V

V

S

= 2.5V

V

CM

= 25∞C

T

A

INPUT OFFSET VOLTAGE (µV)

V

= 1M • I

OUT

BW = 350kHz
NOISE = 291nV AT 10kHz

V

OUT

–20

0

PD

20 40

60

Part No

Amplifiers
per
Package

GBW
Ty p
(MHz)

SR
Ty p
(V/µs)

V

OS

Max
(µV)

VOS TC
Max
(µV/°C)

IB Max
(nA)

Rail-to­Rail

e

n

(nV/ Hz)
Ty p

IS/Amp
Max
(mA) V

(V) Packages

SUPPLY

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

INDUSTRIAL SIGNAL CHAIN

Instrumentation Amplifiers

INSTRUMENTATION AMPLIFIERS

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.

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

Zero Drift, Precision Instrumentation Amplifier with Digitally
Programmable Gain

2.7V to ± 5V

Zero Drift

SERIAL/

PARALLEL

µP

+

–

LTC6915

x1

SERIAL/PARALLEL

RESISTOR

ARRAY

INTERFACE

+
–

OUT

SENSE

REF

LTC6915 Demo Board

V
Max

Gain

Device

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

LTC6800 Any 100 1.2 90 0.2 2.7–5.5 MSOP-8, DFN-8 Two Rs Set Gain Low Cost, Zero Drift,

LTC6915 1–4096 10 1.6 105 0.2 2.7–11 DFN-12, SSOP-16 Digital Gain Zero Drift, Serial/Parallel

Range

Any 10 1.3 105 0.2 2.7–11 MSOP-8, DFN-8 Two Rs Set Gain Zero Drift, Rail-to-Rail,

25°C
(µV)

Supply

OS

Current
Max 25°C
(mA)

CMRR
Min
25°C
(dB)

GBW
(MHz)

Supply
Voltage
(V) Package Gain Set Comments

Sync to External Clock

RRIO

Programmable

INDUSTRIAL SIGNAL CHAIN

PROGRAMMABLE GAIN AMPLIFIERS AND GAIN-SELECTABLE DIFFERENCE AMPLIFIERS

PGAs and Gain-Selectable Difference Amplifiers

07

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.

LT1991

.

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

Rail-to-Rail Gain = 1 Difference Amplifier

50k

150k

450k

450k

150k

50k

ΔV

IN

INPUT RANGE
–0.5V TO 5.1V

= 900kΩ

R

IN

–

V

M(IN)

+

V

P(IN)

V

= V

+ ΔV

OUT

REF

5V

450k

4pF

–

+

LT1991

450k

4pF

SWING 40mV TO
EITHER RAIL
R

OUT

V

REF

IN

<0.1Ω

= 2.5V

LT1990 Demo Board

PGAs and Diff Amps

IS/Amp

Device Channels

V

SUPPLY

(V)

(mA)
Max

GBW
(MHz) Gain Range Packages Comments

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,

256, 512, 1024, 2048, or 4096

DFN-12, GN-16 Zero Drift, Precision Instrumentation

Amplifier with Digitally Programmable Gain

08

V

INDUSTRIAL SIGNAL CHAIN

High Side Current Sense Amplifiers

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:

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 Side Current Sense Amplifiers

V

V

OS

Max

TC

25°C

Max

Part No

(mV)

(µV/°C)

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 V

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

LT6106 250 1 typ 0.095 44 no SOT23-5 Low Cost 36V

LT6107 250 1 typ 0.095 44 no SOT23-5 Wide Temperature

LT6105 300 0.5 typ 0.3 44 no DFN-6, MS-8 Wide Input Range

LTC6101HV 300 1 0.45 105 no SOT23-5, MS-8 High Voltage,

LTC6101 300 1 0.45 70 no SOT23-5, MS-8 High Voltage,

LT6100 300 1.5 typ 0.13 48 no DFN-8, MS-8 Precision, Gain

LTC6103 450 1.5 0.5 70 no MS-8 Dual High Voltage,

LTC6104 450 1.5 0.52 70 yes MS-8 High Voltage, High-

I

OS

S

Max
25°C
(mA)

V

SENSE

Max
(mV)

Bi­directional Packages Comments

2

C ADC

I

High-Side

range: -55C to 150C

-0.3V to 44V
(Independent of V+)

High-Side

High-Side

Selectable

High-Side

Side, Bidirectional

IN

High Voltage Current Sensing with
16-Bit Resolution

I

LOAD

+IN

L

V

O
A
D

–

LTC6101HV

V

= • V

OUT

V

SENSE

+

–

+

–

R

OUT

R

IN

SENSE

R

4.99k

R

IN

100Ω

–IN

+

V

V

OUT

OUT

OUT =

49.9 • V

5V TO 105

SENSE

Gain of 50 Current Sense Amplifier

SOURCE

–0 .3V TO 44V

V

S

0.02Ω

V

S

TO LOAD

R

IN2

+

100Ω

+IN

R

IN1

100Ω

–

–IN

+

–

+

V

2.85V TO 36V

V

OUT

= (V

LT6105

+

S

R

–

– V

) •

S

R

Over-The-Top Current Sense

5V TO 44V

R1

200Ω

R

S

LOAD

0.2Ω

I

LOAD

I

LOAD

V

OUT

–

V

OUT

IN

R

OUT

4.99k

= 1V/A

V

OUT

=

+

LT1636

–

(RS)(R2/R1)

5V

V

OUT

V

OUT

(0V TO 4.3V)
R2
2k

Selected Op Amps for Current Sense Applications

V

OS

Max
25°C

Part No

LTC2050/1/2 3 0.03 1.5 2 12 SOT-23, DFN-8, MSOP, SO-8,

LT1991 50 1 0.11 0.12 60 DFN-10, MS-10 Precision, 100µA, Gain Selectable Difference Amplifier

LTC4150 100 0.14 9 MS-8 Coulomb Counter

LT1636 225 5 0.055 0.045 44 DFN-8, DIP-8, MS-8, SO-8 Over-The-Top Micropower Op Amp

LT1637/8/9 350 3 0.25 0.35 44 DFN-8, DIP-8, MS-8, SO-8,

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,

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

(µV)

VOS Drift
Max
25°C
(µV/°C)

I

SUPPLY

Max
25°C
(mA)

SR Typ
(V/µs)

Sense
Voltage
Max (V) Packages Comments

Zero Drift Amplifiers

SSOP-16

Single/Dual/Quad, High Voltage Over-The-Top Input

DIP-14, SO-14

Dual/Quad, Rail-to-Rail I/O Over-The-Top

DIP-14, SO-14

* See additional applications in Linear Technology's Online Current Sense Circuit Collection: http://www.linear.com/currentsense

INDUSTRIAL SIGNAL CHAIN

V

ADC DRIVERS/FILTERS

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, 2V

.

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

P-P

Matched Dual Amplifier with Output Common Mode Biasing

LTC6420 Demo Board

0.1µF

= 200Ω

Z

IN

0.1µF
–IN A

VIN A

0.1µF

+IN A

V– V–

0.1µF

+IN B

B

0.1µF

IN

–IN B

ZIN = 200Ω

0.1µF

3V

1000pF

V+ A V

100Ω

100Ω

LTC6420-20

100Ω

100Ω

V+ B V

1000pF

V

OCM

OCM

1000Ω

–

+

1000Ω

1000Ω

+

–

1000Ω

OCM

V

OCM

09

A

ENABLEA

A

12.5Ω

12.5Ω

12.5Ω

12.5Ω

B

ENABLEB

B

+OUT A

–OUT A

±0.1dB GAIN MATCHING
±0.1° PHASE MATCHING AT 100MHz

–OUT B

+OUT B

V

A

OCM

V

A

OCM

V

B

OCM

B

V

OCM

3V

Differential ADC Drivers and Filters

Input

Part No

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

INDUSTRIAL SIGNAL CHAIN

Data Conversion for Low Frequency Signals

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

2

package sizes. With ADC resolutions from 16 bits up to 24 bits, up to 16 input channels and either I

C 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

Noise at 1.76kHz Output Rate

2µV

RMS

200nV

Noise at 13.8Hz Output Rate with Simultaneous

RMS

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

CC

LTC2449 Demo Board

Common Mode Range

DC590B USB Serial ControllerQuick Eval User Interface

No Latency Delta-Sigma ADCs (<8kHz Output Rate)

Sample
Rate

Part No Bits Input Channels

LTC2440 24 1 Differential 4000 200nV 2.5µV 10ppm SSOP-16

LTC2442 24 2 Differential/

4 Single-Ended

LTC2444 24 4 Differential/

8 Single-Ended

LTC2445 24 4 Differential/

8 Single-Ended

LTC2446 24 4 Differential/

8 Single-Ended

LTC2447 24 4 Differential/

8 Single-Ended

LTC2448 24 8 Differential/

16 Single-Ended

LTC2449 24 8 Differential/

16 Single-Ended

(sps)

8000 220nV 2.5µV 10ppm Internal Amplifiers SSOP-36

8000 280nV 2.5µV 10ppm QFN-38 (5 x 7)

8000 200nV 2.5µV 10ppm MUX

8000 280nV 2.5µV 10ppm Multiple Reference Inputs QFN-38 (5 x 7)

8000 200nV 2.5µV 10ppm Multiple Reference Inputs,

8000 280nV 2.5µV 10ppm QFN-38 (5 x 7)

8000 200nV 2.5µV 10ppm MUX

RMS
Noise

Offset
Error

Full-Scale
Error Comments

/ADCIN Pins Allow

OUT

External Buffer in Front of ADC

MUX

/ADCIN Pins Allow

OUT

External Buffer in Front of ADC

/ADCIN Pins Allow

OUT

External Buffer in Front of ADC

Packages
(mm × mm)

QFN-38 (5 x 7)

QFN-38 (5 x 7)

QFN-38 (5 x 7)

INDUSTRIAL SIGNAL CHAIN

DATA CONVERSION FOR LOW FREQUENCY SIGNALS

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

11

Part No Bits

Input Channels
(Differential/Single­Ended)

RMS
Noise I/O

Sample
Rate

Total
Unadjusted
Error (Max) PGA

Temp
Sensor Packages (mm x mm)

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)

LTC2481 16 1 0.6µV I2C 15Hz 0.004% • • DFN-10 (3 x 3)

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)

LTC2485 24 1 0.6µV I2C 15Hz 0.004% • DFN-10 (3 x 3)

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)

LTC2489 16 2/4 0.6µV I2C 7.5Hz 0.004% DFN-14 (4 x 3)

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)

LTC2495 16 8/16 0.6µV I2C 15Hz 0.004% • • DFN-38 (5 x 7)

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)

LTC2499 24 8/16 0.6µV I2C 15Hz 0.004% • DFN-38 (5 x 7)

LTC2492 Allows Easy Measurement of Multiple Thermistors or High Impedance Sensors

5V

102k

10k TO 100k

0.1µF

0.1µF

0.1µF

C4

C3

+

–

LT1494

5V

R1

51.1k

+

= 0

I

IN

R3
10k TO 100k

–

R4

51.1k

5V

0.1µF

= 0

I

IN

1k

1k

0.1µF

10µF

0.1µF

5V

12 1

V

F

CC

O

LTC2492

13

+

REF

REF

CH0

CH1

CH2

CH3

COM

SDI

–

SCK

SDO

CS

GND

14

8

9

10

11

7

2

3

5

4

6

= EXTERNAL OSCILLATOR
= INTERNAL OSCILLATOR

3-WIRE
SPI INTERFACE

Ultra-Tiny ADC Demo Board

12

INDUSTRIAL SIGNAL CHAIN

SIMULTANEOUS SAMPLING ADCs

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
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

.

Small 32-Pin (5mm × 5mm) QFN Package

Simultaneous Sampling ADCs

Part No Bits

Input
Channels Input Range

Sample
Rate

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

Packages
(mm x mm)

LTC2351-14 Block Diagram

+

CH5–CH5

2021

+

–

S AND H S AND H S AND H S AND H S AND H

CH4

18

–

–

+

CH4

1619 8

17

+

–

CH3–CH3

1415

+

+

11

13

–

MUX

CH2

S AND H

10µF 3V

–

–

+

CH2

10

+

–

CH1–CH1

7 6912

+

+

CH0

5

–

4

+

2.5V

REFERENCE

CH0

+

10µF

1.5Msps

12-BIT ADC

V

REF

24

BIP SEL2 SEL1 SEL0GND

V

CCVDD

25

2629232233 27 28

12-BIT LATCH 0

12-BIT LATCH 1

12-BIT LATCH 2

12-BIT LATCH 3

12-BIT LATCH 4

12-BIT LATCH 5

TIMING

LOGIC

THREE-

STATE

SERIAL

OUTPUT

PORT

OV

DD

3V

3

SD0

1

OGND

2

CONV

30

SCK

32

DGND

31

0.1µF

INDUSTRIAL SIGNAL CHAIN

Y

Fast, Tiny Single Channel ADCs

FAST, TINY SINGLE CHANNEL ADCs

13

LTC2366

.

12-Bit Resolution

.

Pin- and Software-Compatible 3Msps/1Msps/

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

LTC2366: 3Msps 12-Bit ADC

3V

V

V

GND

A

DD

REF

IN

LTC2366

10µF

ANALOG INPUT

0V TO 3V

OV

SDO

SCK

CS

DD

SERIAL DATA LINK TO
ASIC, PLD, MPU, DSP
OR SHIFT REGISTERS

DIGITAL OUTPUT SUPPL
1V TO 3.6V

4.7µF

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

Power @

Sample

Part No Bits

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

Rate V

CC

Input Range I/O

Max Sample
Rate

Maximum Ambient
Temperature Packages

14

INDUSTRIAL SIGNAL CHAIN

General Purpose ADCs

GENERAL PURPOSE ANALOG-TO-DIGITAL CONVERTERS

LTC1867

.

8 Single-Ended Inputs, 4 Differential Inputs, or

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

Supply Current vs
Sampling Frequency

2.0

1.5

1.0

0.5

SUPPLY CURRENT (mA)

0.01
1

f

SAMPLE

10010 1000

(ksps)

16-Bit, 8-Channel, 200ksps ADC

CH0

CH1

CH2

CH3

CH4

CH5

CH6

CH7/COM

ANALOG

INPUT

MUX

+

–

5V

LTC1867

16-BIT

200ksps

ADC

2.5V
REF

SERIAL

PORT

REFCOMP

SDI

SDO

SCK

CS/CONV

V

REF

2.2µF

10µF

LTC1867 Demo Board

Low Power Serial ADCs

Part No Bits Input Channels

LTC1867(L) 16 8 Single-Ended/

4 Differential

Sample
Rate (ksps) Input Span V

200 (175) 0V – 4.096V or ±2.048 (0V

–2.5V or ±1.25V)

CC

Power (mW) I/O

5V (3V) 6.5 (2.25) SPI SSOP-16

Packages
(mm x mm)

LTC1865 (L) 16 2 Single-Ended 250 (150) 0V– 5V (0V to 3V) 5V (3V) 4.25 (2.25) SPI SO-8, MSOP-10

LTC1864 (L) 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/

500 0V–4.096V or ±2.048 5V 17.5 SPI QFN-24 (4 x 4)

4 Differential

LTC1863 (L) 12 8 Single-Ended/

4 Differential

LTC2309 12 8 Single-Ended/

200 (175) 0V– 4.096V or ±2.048 (0V

5V (3V) 6.5 (2.25) SPI SSOP-16

–2.5V or ±1.25V)

14 0V– 4.096V or ±2.048 5V 11.5 I2C QFN-24 (4 x 4)

4 Differential

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

(L) Signifies VCC = 3V

INDUSTRIAL SIGNAL CHAIN

SoftSpan™ ADCs for Wide Input Range Applications

SOFTSPAN ADCs FOR WIDE INPUT RANGE APPLICATIONS

15

LTC1859

.

Sample Rate: 100ksps

.

8-Channel Multiplexer with ±25V Protection

.

Single 5V Supply

.

Software-Programmable Input Ranges:

0V to 5V, 0V to 10V, ±5V or ±10V
(LTC1859/LTC1858/LTC1857)

.

Fixed ±10V Input Range

(LTC1856/LTC1855/LTC1854)

.

8 Single-Ended or 4 Differential Inputs

.

28-Pin SSOP Package

16-Bit, 8-Channel ADC with Software Programmable Input Ranges

+15V

–

LT1639

10k

+

-15V

12V TO 25V

SETRA 206

PRESSURE INPUT
UP TO 10,000psi

SOFTWARE-PROGRAMMABLE
SINGLE-ENDED OR
DIFFERENTIAL INPUTS
(0V TO 5V, 0V TO 10V, ±5V OR ±10V)

COM

CH0

CH1

CH2

CH3

CH4

CH5

CH6

CH7

MUXOUT

MUXOUT

+

ADC

–

ADC

AGND1

LTC1859

+

–

CONVST

SCK

SDI

DGND

SDO

BUSY

OV

DV

AV

AGND3

AGND2

REFCOMP

V

RD

DD

DD

DD

REF

1µF 10µF

µP

CONTROL

LINES

3V TO 5V

5V

5V

10µF 10µF 10µF

±10V ADCs (Software-Programmable or Resistor-Selectable)

Sample

Part No Bits

Input
Channels

Rate
(ksps) Input Span V

LTC1859 16 8 100 Software-Programmable

Power
(mW)

CC

5V 40 2 3 Serial SSOP-28

Max

Max

DNL

INL

(LSB)

(LSB) I/O Packages

0V–5V, 0V–10V, ±5V, or ±10V

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 65 1 2 Serial SSOP-28, SW-28

±5V, ±3.3V

LTC1858 14 8 100 Software-Programmable

5V 40 1 1.5 Serial SSOP-28

0V–5V, 0V–10V, ±5V, or ±10V

LTC1855 14 8 100 ±10V 5V 40 1 1.5 Serial SSOP-28

LTC1857 12 8 100 Software-Programmable

5V 40 1 1 Serial SSOP-28

0V–5V, 0V–10V, ±5V, or ±10V

LTC1854 12 8 100 ±10V 5V 40 1 1 Serial SSOP-28

16

INDUSTRIAL SIGNAL CHAIN

HIGH SPEED DATA ACQUISITION

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 (2.25V

Input Range)

1.5V

P-P

.

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)

P-P

or

LTC2209 Demo Board

DC890B USB Interface Board

High Speed ADC Snapshot

Full Power

Part No Bits Sample Rate ADCs SNR SFDR

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

Bandwidth

Power
Dissipation

INDUSTRIAL SIGNAL CHAIN

V

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.

HIGH SPEED DATA ACQUISITION

LTM9001-AA Demo Board

17

The LTM9001 Signal Chain Module Incorporates an ADC, Amplifier and Filtering

V

= 3.3V VDD= 3.3V

CC

–

RF

LO

SAW

IN

+

IN

DIFFERENTIAL
FIXED GAIN
AMPLIFIER

ANTI-ALIAS

FILTER

GND

SENSE

ENC

+

ENC

16-BIT

130Msps ADC

–

ADC CONTROL PINS

LTM9001

CLKOUT

OF

0VDD = 0.5V TO 3.6

D15

CMOS

•

•

OR

•

LVDS

D0

OGND

18

INDUSTRIAL SIGNAL CHAIN

ULTRA-TINY 12-/10-/8-BIT DACS / COMPACT MICROPOWER DACS

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

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)

.

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)

Resolution

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:

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.

Compact, Micropower DACs for Control Loop Applications

Part No Bits

LTC2600/
LTC2610/
LTC2620

LTC2604/
LTC2614/
LTC2624

LTC2602/
LTC2612/
LTC2622

LTC2601/
LTC2611/
LTC2621

LTC2605/
LTC2615/
LTC2625

LTC2609/
LTC2619/
LTC2929

LTC2607/
LTC2617/
LTC2627

LTC2606/
LTC2616/
LTC2626

LTC1660/
LTC1665

LTC1664 10 4 SPI SSOP-16 1 2.7V– 5.5V

LTC1662 10 2 SPI MSOP-8 0.017 2.7V– 5.5V

LTC1669 10 1 I2C TSOT23-5,

16/14/12 8 SPI SSOP-16 20 2.5V– 5.5V

16/14/12 4 SPI SSOP-16 10 2.5V– 5.5V

16/14/12 2 SPI MSOP-8 6.5 2.5V–5.5V

16/14/12 1 SPI DFN-10 1.875 2.5V– 5.5V

16/14/12 8 I2C SSOP-16 20 2.7V– 5.5V

16 4 I2C SSOP-16 10 2.7V– 5.5V

16 2 I2C MSOP-8 6.5 2.7V–5.5V

16 1 I2C DFN-10 1.875 2.7V–5.5V

10/8 8 SPI SSOP-16 1 2.7V– 5.5V

Single DACs
w/ Internal
Reference

SPI I2C SPI

DAC
Outputs I/O Packages

Single DACs w/ Reference

Input/Output

MSOP-8

Maximum
Ambient
Temperature

Power
(mW) V

0.375 2.7V–5.5V

CC

INDUSTRIAL SIGNAL CHAIN

RMS-TO-DC CONVERTERS

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.

19

LTC1968

.

High Linearity: 0.02% Linearity Allows Simple System Calibration

.

Wide Input Bandwidth: Bandwidth to 0.1% Additional Gain
Error: 40kHz

.

No-Hassle Simplicity: True RMS-to-DC Conversion with Only One
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

Linearity Performance

)

0.2

RMS

0

-0.2

mV AC

IN

-0.4

-0.6

mV DC – V

LINEARITY ERROR

-0.8

OUT

60Hz SINEWAVE

-1.0

(V

0

LTC1968, ΔΣ

CONVENTIONAL

LOG/ANTILOG

VIN (mV AC

RMS

400100 200 300 500

)

RMS Noise Measurement

VOLTAGE
NOISE IN

100

Ω

100Ω

1.5µF

+

LT6203

–

2.5V

1/2

–2.5V

100k

0.1µF

2.5V

V

OUT

+

IN1

IN2

GND

V

LTC1968

OUT RTN

–2.5V

V

OUT

EN

1k

LTC1968 Demo Board

1mV

=

1µV

BW 1kHz TO 100kHz
INPUT SENSITIVITY = 1µV

DC

OF INPUT NOISE

RMS

C

AVE

10µF

RMS

TYP

RMS-to-DC Converters

I

SUPPLY

Max 25°C
(mA) Package

Part No

1% Error Bandwidth
(Typ) kHz

3dB Error Bandwidth
(Typ) kHz

Max Linearity
Error (%)

Max Conversion
Gain Error (%)

VS Max
(V)

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

INDUSTRIAL SIGNAL CHAIN

PRECISION REFERENCES

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.

.

Low Quiescent Current: 5.6µA (Typ)

.

Wide Supply Range: 1.4V to 18V

.

400mV Reference ±1% Maximum Accuracy

Over Temperature at 5V

.

Rail-to-Rail Buffer Amplifier

.

0.5% 400mV Maximum Initial
Accuracy at 5V

.

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

(ThinSOT™) Package

Full-Bridge Load Current Monitor

V

AUTOMOTIVE

R

+

–

I

L

<_

–12
= V

V

OUT

REF

S

<_

V

73V

CM

± (10 • IL • RS)

5V

IN

LT6650

GND

OUT

LT1990

R1

1M

V

= 1.5V

REF

54.9k

1nF

FB

30k

1µF

R2

1M

R3
40k

–

+

R4
40k

FOR R

S

= 0.5V for IL = 100A

V

OUT

= 1.5V for IL = 0A

V

OUT

= 2.5V for IL = –100A

V

OUT

R5

900k

R8

900k

= 1m:

100k

R6
100k

100k

R9
100k

R7

R10

V

OUT

Selected Precision References

Part No

Series/
Shunt

Reference Values
(V)

LT1790 Series 1.25, 2.048, 2.5,

33.3, 4.049, 5

Max
Accuracy
(%)

Drift

(ppm/°C) Package I

SUPPLY

0.05 10 SOT-23-6 60µA 0.1 170 High Precision SOT-23

Min
In/Out

*

Voltage (V)

Line
RegMax
(ppm/V) Comment

Reference

LT1461 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 0.9 25 Output Capacitor Optional
DIP-8,
TO-12

LT1236 Both 5, 10 0.05 5 SO-8, DIP 1.2mA 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,

1mA 1.1 3 High Line Rejection
TO-5, SO-8

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

*Min Operating Current for Series Operation or Max Quiescent for Shunt Operation

INDUSTRIAL SIGNAL CHAIN

SILICON OSCILLATORS

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

(1.5% over 0°C to 70°C)

.

Supply Voltage and Current:

2V to 5.5V, IS = 25µA at 100kHz

.

No Decoupling Capacitor Needed

.

Start-Up Time Under 100µ at 1MHz

First Cycle After Power-Up is Accurate

.

CMOS Output Driver

.

Low Profile (1mm) SOT-23 Package

LTC6906

Demo Board

Micropower Clock Generator

NO DECOUPLING

CAPACITOR

NEEDED

2.25V TO 3.6V

.10

.3
.1

LTC6906

+

V

GND

DIV

OUT

GRD

SET

10kHz TO 1MHz

R

SET

100k TO 1M

21

Silicon Oscillators

Frequency

Program

Part No

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

LTC6904 Serial–I2C 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–

Method

Frequency
Range

8.192MHz

Accuracy
Max 25°C

0.09% 1ppm/°C 0.43@5MHz DFN-8, MS-8 8 Pin-Selectable Frequencies

Frequency
Drift

IS Max
VS = V

(µA) Package Comments

MIN

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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LW100815KU