Datasheet LT1494, LT1495, LT1496 (Analog Devices)
| Manufacturer | Analog Devices |
| Description | 1.5µA Max, Single, Dual and Quad Over-The-Top Precision Rail-to-Rail Input and Output Op Amps |
| Pages / Page | 16 / 1 — FEATURES. DESCRIPTIO. Low Supply Current: 1.5. A Max. Rail-to-Rail Input … |
| File Format / Size | PDF / 265 Kb |
| Document Language | English |
FEATURES. DESCRIPTIO. Low Supply Current: 1.5. A Max. Rail-to-Rail Input and Output. Low Offset Voltage: 375. V Max
Model Line for this Datasheet
- LT1494CMS8#PBF LT1494CMS8#TRPBF LT1494CN8#PBF LT1494CS8#PBF LT1494CS8#TRPBF LT1494HS8#PBF LT1494HS8#TRPBF LT1494IMS8#PBF LT1494IMS8#TRPBF LT1494IN8#PBF LT1494IS8#PBF LT1494IS8#TRPBF
Text Version of Document
LT1494/LT1495/LT1496 1.5µA Max, Single, Dual and Quad Over-The-Top Precision Rail-to-Rail Input and Output Op Amps
U FEATURES DESCRIPTIO
■
Low Supply Current: 1.5
µ
A Max
The LT®1494/LT1495/LT1496 are the lowest power ■
Rail-to-Rail Input and Output
(IS ≤ 1.5µA) op amps with precision specifications. The ■
Low Offset Voltage: 375
µ
V Max
extremely low supply current is combined with excellent ■
Operating Temperature Range: – 40
°
C to 125
°
C
amplifier specifications: input offset voltage is 375µV ■
Over-The-TopTM Inputs Operate Above V+
maximum with a typical drift of only 0.4µV/°C, input offset ■ Wide Supply Range: 2.2V to 36V current is 100pA maximum. A minimum open-loop gain ■ Single Supply Input Range: – 0.3V to 36V (AVOL) of 100V/mV ensures that gain errors are small. The ■ Low Input Bias Current: 250pA device characteristics change little over the supply range ■ Low Input Offset Current: 20pA of 2.2V to ±15V. Supply rejection is 90dB and the common mode rejection ratio is 90dB. Operation is specified for 3V, ■ High AVOL: 100V/mV Minimum Driving 100kΩ Load 5V and ±15V supplies. Reverse battery protection ■ Output Sources and Sinks 500µA Load Current (–18V␣ min) and inputs that operate above the positive ■ Reverse Battery Protected to 18V supply make the LT1494/LT1495/LT1496 easy to use in
U
harsh environments.
APPLICATIO S
The low bias currents and offset current of the amplifier permit the use of megohm level source resistors without ■ Battery- or Solar-Powered Systems introducing significant errors. Voltage noise at 4µVP-P is ■ Portable Instrumentation remarkably low considering the low supply current. ■ Remote Sensor Amplifier ■ The LT1494 is available in the 8-Pin MSOP, PDIP and SO Micropower Filter packages.The LT1495 is available in plastic 8-Pin PDIP and SO packages with the standard dual op amp pinout. , LTC and LT are registered trademarks of Linear Technology Corporation. Over-The-Top is a trademark of Linear Technology Corporation. The LT1496 is available in 14-Pin SO and PDIP packages.
U TYPICAL APPLICATION Micropower Integrating Current Sense TC VOS Distribution
RESET 30 100 AMPLIFIERS 0.1µF V 25 S = ±2.5V –40°C TO 85°C VCC RI 1M 20 – RS 1/2 LT1495 – 15 0.1Ω 1M UNITS + 1/2 LT1495 VO I 10 L + LOAD 10M 10M 5 V 1495 TA01 CC 200k 0–2.0 –1.6 –1.2 –0.8 –0.4 0 0.4 0.8 1.2 1.6 2.0 TC VOS (µV/°C) OUTPUT SWITCHES 1495 TA02 R WHEN I I ( ) Ldt = 0.98 VCC C = (4.9A)(SEC) FOR VCC = 5V RS IS = 3µA DURING INTEGRATION; IS = 5µA END OF INTEGRATION 1
U FEATURES DESCRIPTIO
■
Low Supply Current: 1.5
µ
A Max
The LT®1494/LT1495/LT1496 are the lowest power ■
Rail-to-Rail Input and Output
(IS ≤ 1.5µA) op amps with precision specifications. The ■
Low Offset Voltage: 375
µ
V Max
extremely low supply current is combined with excellent ■
Operating Temperature Range: – 40
°
C to 125
°
C
amplifier specifications: input offset voltage is 375µV ■
Over-The-TopTM Inputs Operate Above V+
maximum with a typical drift of only 0.4µV/°C, input offset ■ Wide Supply Range: 2.2V to 36V current is 100pA maximum. A minimum open-loop gain ■ Single Supply Input Range: – 0.3V to 36V (AVOL) of 100V/mV ensures that gain errors are small. The ■ Low Input Bias Current: 250pA device characteristics change little over the supply range ■ Low Input Offset Current: 20pA of 2.2V to ±15V. Supply rejection is 90dB and the common mode rejection ratio is 90dB. Operation is specified for 3V, ■ High AVOL: 100V/mV Minimum Driving 100kΩ Load 5V and ±15V supplies. Reverse battery protection ■ Output Sources and Sinks 500µA Load Current (–18V␣ min) and inputs that operate above the positive ■ Reverse Battery Protected to 18V supply make the LT1494/LT1495/LT1496 easy to use in
U
harsh environments.
APPLICATIO S
The low bias currents and offset current of the amplifier permit the use of megohm level source resistors without ■ Battery- or Solar-Powered Systems introducing significant errors. Voltage noise at 4µVP-P is ■ Portable Instrumentation remarkably low considering the low supply current. ■ Remote Sensor Amplifier ■ The LT1494 is available in the 8-Pin MSOP, PDIP and SO Micropower Filter packages.The LT1495 is available in plastic 8-Pin PDIP and SO packages with the standard dual op amp pinout. , LTC and LT are registered trademarks of Linear Technology Corporation. Over-The-Top is a trademark of Linear Technology Corporation. The LT1496 is available in 14-Pin SO and PDIP packages.
U TYPICAL APPLICATION Micropower Integrating Current Sense TC VOS Distribution
RESET 30 100 AMPLIFIERS 0.1µF V 25 S = ±2.5V –40°C TO 85°C VCC RI 1M 20 – RS 1/2 LT1495 – 15 0.1Ω 1M UNITS + 1/2 LT1495 VO I 10 L + LOAD 10M 10M 5 V 1495 TA01 CC 200k 0–2.0 –1.6 –1.2 –0.8 –0.4 0 0.4 0.8 1.2 1.6 2.0 TC VOS (µV/°C) OUTPUT SWITCHES 1495 TA02 R WHEN I I ( ) Ldt = 0.98 VCC C = (4.9A)(SEC) FOR VCC = 5V RS IS = 3µA DURING INTEGRATION; IS = 5µA END OF INTEGRATION 1
