Datasheet

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LTC2051/LTC2052

20512fd

Dual/Quad Zero-Drift

Operational Amplifiers

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Thermocouple Amplifiers

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Electronic Scales

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Medical Instrumentation

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Strain Gauge Amplifiers

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High Resolution Data Acquisition

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DC Accurate RC Active Filters

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Low Side Current Sense

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Maximum Offset Voltage of 3μV

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Maximum Offset Voltage Drift of 30nV/°C

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Small Footprint, Low Profile MS8/GN16 Packages

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Single Supply Operation: 2.7V to ±5.5V

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Noise: 1.5μV

P-P

(0.01Hz to 10Hz Typ)

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Voltage Gain: 140dB (Typ)

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PSRR: 130dB (Typ)

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CMRR: 130dB (Typ)

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Supply Current: 0.75mA (Typ) per Amplifier

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Extended Common Mode Input Range

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Output Swings Rail-to-Rail

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Operating Temperature Range –40°C to 125°C

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Available in 3mm × 3mm × 0.8mm DFN Package

The LTC

2051/LTC2052 are dual/quad zero-drift opera-

tional amplifiers available in the MS8 and SO-8/GN16 and

S14 packages. For space limited applications, the LTC2051

is available in a 3mm × 3mm × 0.8mm dual fine pitch

leadless package (DFN). They operate from a single 2.7V

supply and support ±5V applications. The current con-

sumption is 750μA per op amp.

The LTC2051/LTC2052, despite their miniature size, fea-

ture uncompromising DC performance. The typical input

offset voltage and offset drift are 0.5μV and 10nV/°C. The

almost zero DC offset and drift are supported with a power

supply rejection ratio (PSRR) and common mode rejec-

tion ratio (CMRR) of more than 130dB.

The input common mode voltage ranges from the negative

supply up to typically 1V from the positive supply. The

LTC2051/LTC2052 also have an enhanced output stage

capable of driving loads as low as 2kΩ to both supply rails.

The open-loop gain is typically 140dB. The LTC2051/

LTC2052 also feature a 1.5μV

P-P

DC to 10Hz noise and a

3MHz gain-bandwidth product.

Input Referred Noise 0.1Hz to 10Hz

High Performance Low Cost Instrumentation Amplifier

, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.

All other trademarks are the property of their respective owners.

–1

–2

μV

0246810

TIME (SEC)

2052 TA02

FEATURES

DESCRIPTIO

APPLICATIO S

TYPICAL APPLICATIO

–

10k

0.1%

100Ω

0.1%

20512 TA01

–5V

–

1/2

LTC2051HV

1/2

LTC2051HV

–V

= 101

10k

0.1%

100Ω

0.1%

Summary of content (12 pages)

PAGE 1
LTC2051/LTC2052 Dual/Quad Zero-Drift Operational Amplifiers U FEATURES ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ DESCRIPTIO Maximum Offset Voltage of 3μV Maximum Offset Voltage Drift of 30nV/°C Small Footprint, Low Profile MS8/GN16 Packages Single Supply Operation: 2.7V to ±5.5V Noise: 1.5μVP-P (0.01Hz to 10Hz Typ) Voltage Gain: 140dB (Typ) PSRR: 130dB (Typ) CMRR: 130dB (Typ) Supply Current: 0.
PAGE 2
LTC2051/LTC2052 W W W AXI U U ABSOLUTE RATI GS (Note 1) Total Supply Voltage (V + to V –) LTC2051/LTC2052 .................................................. 7V LTC2051HV/LTC2052HV ....................................... 12V Input Voltage (Note 5) .......... (V + + 0.3V) to (V – – 0.3V) Output Short-Circuit Duration ......................... Indefinite Operating Temperature Range ............. – 40°C to 125°C Specified Temperature Range (Note 3) – 40°C to 125°C Storage Temperature Range ............
PAGE 3
LTC2051/LTC2052 U U W PACKAGE/ORDER I FOR ATIO ORDER PART NUMBER TOP VIEW OUT A 1 16 OUT D –IN A 2 15 –IN D +IN A 3 14 +IN D V+ 4 13 V – +IN B 5 12 +IN C –IN B 6 11 –IN C OUT B NC 7 8 10 OUT C 9 LTC2052CGN LTC2052IGN LTC2052HVCGN LTC2052HVIGN LTC2052HGN LTC2052HVHGN GN PART MARKING NC ORDER PART NUMBER TOP VIEW OUT A 1 14 OUT D –IN A 2 13 –IN D +IN A 3 12 +IN D V+ 4 +IN B 5 10 +IN C –IN B 6 9 –IN C OUT B 7 8 OUT C 2052 2052I 2052HV 052HVI 2052H 052HVH GN PACKAGE 16-LEA
PAGE 4
LTC2051/LTC2052 U AVAILABLE OPTIO S PART NUMBER LTC2052IS LTC2052IGN LTC2052HVIS LTC2052HVIGN LTC2052HS LTC2052HGN LTC2052HVHS LTC2052HVHGN AMPS/PACKAGE 4 4 4 4 4 4 4 4 SPECIFIED TEMP RANGE –40°C to 85°C –40°C to 85°C –40°C to 85°C –40°C to 85°C –40°C to 125°C –40°C to 125°C –40°C to 125°C –40°C to 125°C SPECIFIED VOLTAGE 3V, 5V 3V, 5V 3V, 5V, ±5V 3V, 5V, ±5V 3V, 5V 3V, 5V 3V, 5V, ±5V 3V, 5V, ±5V PACKAGE 14-Lead SO 16-Lead SSOP 14-Lead SO 16-Lead SSOP 14-Lead SO 16-Lead SSOP 14-Lead SO 16-Lead SSOP EL
PAGE 5
LTC2051/LTC2052 ELECTRICAL CHARACTERISTICS (LTC2051/LTC2052, LTC2051HV/LTC2052HV) The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VS = 3V, 5V unless otherwise noted.
PAGE 6
LTC2051/LTC2052 U W TYPICAL PERFOR A CE CHARACTERISTICS Common Mode Rejection Ratio vs Frequency 140 DC CMRR vs Common Mode Input Range VS = 3V OR ±5V VCM = 0.5VP-P 120 120 100 100 VS = 10V –PSRR 100 60 PSRR (dB) 80 80 VS = 5V VS = 3V CMRR (dB) CMRR (dB) PSRR vs Frequency 120 140 80 60 60 +PSRR 40 40 40 20 20 0 1 100 1k FREQUENCY (Hz) 10 0 0 100k 10k 20 0 2 4 6 4 VS = 3V 2 5 4 VS = 5V 4 3 VS = 3V 2 1 1 0 0 0.
PAGE 7
LTC2051/LTC2052 U W TYPICAL PERFOR A CE CHARACTERISTICS Input Bias Current vs Input Common Mode Voltage Transient Response Input Overload Recovery INPUT (V) 150 OUTPUT (V) 2V/DIV 200 100 VS = ±5V 50 VS = 5V AV = 1 RL = 10k CL = 100pF VS = ±5V VS = 3V –3 1 3 –1 0 INPUT COMMON MODE VOLTAGE (V) 5 0 – 0.1 1.
PAGE 8
LTC2051/LTC2052 U W U U APPLICATIO S I FOR ATIO Shutdown The LTC2051 includes a shutdown pin in the 10-lead MSOP. When this active low pin is high or allowed to float, the device operates normally. When the shutdown pin is pulled low, the device enters shutdown mode; supply current drops to 3μA, all clocking stops and the output assumes a high impedance state.
PAGE 9
LTC2051/LTC2052 U TYPICAL APPLICATIO Obtaining Ultralow VOS Drift and Low Noise + 5 2 – 1 1/2 LTC2051 3 + + 1/2 LTC2051 R4 6 5V 7 – C1 R5 20512 F01 C2 R1 OUT R2 R3 3 + 1 8 6 A1 2 – OUT – A1 R1 R2 R3 R4 R5 C1 C2 eIN (DC – 1Hz) eIN (DC – 10Hz) LT1677 2.49k 3.01k 340k 10k 100k 0.01μF 0.001μF 0.15μVP-P 0.2μVP-P LT1012 750Ω 57Ω 250k 10k 100k 0.01μF 0.001μF 0.3μVP-P 0.
PAGE 10
LTC2051/LTC2052 U PACKAGE DESCRIPTIO MS8 Package 8-Lead Plastic MSOP (Reference LTC DWG # 05-08-1660) 0.254 (.010) DETAIL “A” 0° – 6° TYP GAUGE PLANE 0.53 ± 0.152 (.021 ± .006) 1.10 (.043) MAX DETAIL “A” 3.00 ± 0.102 (.118 ± .004) (NOTE 3) 0.86 (.034) REF 0.18 (.007) SEATING PLANE 8 7 6 5 0.127 ± 0.076 (.005 ± .003) 0.65 (.0256) NOTE: BSC 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT TO SCALE 3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS.
PAGE 11
LTC2051/LTC2052 U PACKAGE DESCRIPTIO S8 Package 8-Lead Plastic Small Outline (Narrow .150 Inch) (Reference LTC DWG # 05-08-1610) .189 – .197 (4.801 – 5.004) NOTE 3 .010 – .020 × 45° (0.254 – 0.508) .008 – .010 (0.203 – 0.254) 7 8 .004 – .010 (0.101 – 0.254) .053 – .069 (1.346 – 1.752) .045 ±.005 5 6 .050 BSC 0°– 8° TYP .016 – .050 (0.406 – 1.270) .050 (1.270) BSC .014 – .019 (0.355 – 0.483) TYP NOTE: 1. DIMENSIONS IN INCHES (MILLIMETERS) 2. DRAWING NOT TO SCALE 3.
PAGE 12
LTC2051/LTC2052 U TYPICAL APPLICATIO Paralleling Amplifiers to Improve Noise R2 R1 2 – 1/4 LTC2052 3 1 R + R 5V R2 R1 VIN 6 0.1μF – 1/4 LTC2052 5 7 R 13 + – 4 1/4 LTC2052 12 + 14 VOUT 11 R2 0.1μF R1 9 1/4 LTC2052 10 –5V – 8 R + VOUT R2 NOISE OF EACH PARALLEL OP AMP =3 ; INPUT DC – 10Hz NOISE ≅ 0.