Datasheet LTC1047 (Analog Devices)
| Manufacturer | Analog Devices |
| Description | Dual Micropower Zero-Drift Operational Amplifier with Internal Capacitors |
| Pages / Page | 12 / 1 — FEATURES. DESCRIPTIO. No External Components Required. Maximum Offset … |
| File Format / Size | PDF / 162 Kb |
| Document Language | English |
FEATURES. DESCRIPTIO. No External Components Required. Maximum Offset Voltage: 10. Maximum Offset Voltage Drift: 50nV/
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LTC1047 Dual Micropower Zero-Drift Operational Amplifier with Internal Capacitors
U FEATURES DESCRIPTIO
■
No External Components Required
The LTC®1047 is a micropower, high performance ■
Maximum Offset Voltage: 10
µ
V
dual zero-drift operational amplifier. The sample-and-hold ■
Maximum Offset Voltage Drift: 50nV/
°
C
capacitors usually required by other chopper amplifiers ■ Supply Current: 80µA are integrated on-chip, minimizing the need for external ■ Minimum CMRR: 110dB components. ■ Minimum PSRR: 105dB The LTC1047 has a typical offset voltage of 3µV, drift ■ Single Supply Operation: 4.75V to 16V of 10nV/°C, input noise voltage typically 3.5µVP-P, ■ Common Mode Range Includes GND and typical voltage gain of 150dB. The common mode ■ Output Swings to GND rejection is 110dB minimum, with minimum power supply ■ Typical Overload Recovery Time: 70ms rejection of 105dB. The LTC1047 also offers a 0.2V/µs ■ Pin Compatible with Industry Standard Dual slew rate and a gain bandwidth product of 200kHz. Over- Op Amps load recovery time from saturation is 70ms, four times faster than chopper amplifiers with external capacitors.
U APPLICATIO S
The LTC1047 is available in a standard plastic 8-pin PDIP as well as a 16-pin SW package. The LTC1047 is a plug-in ■ Thermocouple Amplifiers replacement for most dual op amps with improved DC ■ Electronic Scales performance and substantial power savings. ■ Battery Powered Instrumentation ■ Strain Gauge Amplifiers , LTC and LT are registered trademarks of Linear Technology Corporation. ■ Remote Located Sensors
U TYPICAL APPLICATIO Micropower Single Supply Instrumentation Amplifier CMRR vs Frequency
140 5V CS = CH = 1µF 120 4 1/2 LTC1043 100Ω 100k 100 –IN 18 15 5V 80 3 C C S H CMRR (dB) 1µF 1 6 µF 60 – 2 1/2 7 VOUT LTC1047 40 5 +IN 6 5 + 4 20 16 17 GAIN = 1000 100 1k 10k 100k CMRR > = 120dB AT 60Hz FREQUENCY OF COMMON MODE SIGNAL 0.1µF LTC1047 • TA01 VOS = < 10µV LT1047 • TA02 IS = 62µA (INCLUDING THE LTC1043) 1047fa 1
U FEATURES DESCRIPTIO
■
No External Components Required
The LTC®1047 is a micropower, high performance ■
Maximum Offset Voltage: 10
µ
V
dual zero-drift operational amplifier. The sample-and-hold ■
Maximum Offset Voltage Drift: 50nV/
°
C
capacitors usually required by other chopper amplifiers ■ Supply Current: 80µA are integrated on-chip, minimizing the need for external ■ Minimum CMRR: 110dB components. ■ Minimum PSRR: 105dB The LTC1047 has a typical offset voltage of 3µV, drift ■ Single Supply Operation: 4.75V to 16V of 10nV/°C, input noise voltage typically 3.5µVP-P, ■ Common Mode Range Includes GND and typical voltage gain of 150dB. The common mode ■ Output Swings to GND rejection is 110dB minimum, with minimum power supply ■ Typical Overload Recovery Time: 70ms rejection of 105dB. The LTC1047 also offers a 0.2V/µs ■ Pin Compatible with Industry Standard Dual slew rate and a gain bandwidth product of 200kHz. Over- Op Amps load recovery time from saturation is 70ms, four times faster than chopper amplifiers with external capacitors.
U APPLICATIO S
The LTC1047 is available in a standard plastic 8-pin PDIP as well as a 16-pin SW package. The LTC1047 is a plug-in ■ Thermocouple Amplifiers replacement for most dual op amps with improved DC ■ Electronic Scales performance and substantial power savings. ■ Battery Powered Instrumentation ■ Strain Gauge Amplifiers , LTC and LT are registered trademarks of Linear Technology Corporation. ■ Remote Located Sensors
U TYPICAL APPLICATIO Micropower Single Supply Instrumentation Amplifier CMRR vs Frequency
140 5V CS = CH = 1µF 120 4 1/2 LTC1043 100Ω 100k 100 –IN 18 15 5V 80 3 C C S H CMRR (dB) 1µF 1 6 µF 60 – 2 1/2 7 VOUT LTC1047 40 5 +IN 6 5 + 4 20 16 17 GAIN = 1000 100 1k 10k 100k CMRR > = 120dB AT 60Hz FREQUENCY OF COMMON MODE SIGNAL 0.1µF LTC1047 • TA01 VOS = < 10µV LT1047 • TA02 IS = 62µA (INCLUDING THE LTC1043) 1047fa 1
