Product Summary
The AD549LHZ is a monolithic electrometer operational amplifier with very low input bias current. Input offset voltage and input offset voltage drift are laser trimmed for precision performance. This technology allows fabrication of extremely low input current JFETs compatible with a standard junction isolated bipolar process. The AD549LHZ 1015 Ω common-mode impedance, which results from the bootstrapped input stage, ensures that the input current is essentially independent of the common-mode voltage. The applications of the AD549LHZ include Electrometer amplifier, Photodiode preamp, pH electrode buffer and Vacuum ion gauge measurement.
Parametrics
AD549LHZ absolute maximum ratings: (1)Supply Voltage: ±18 V; (2)Internal Power Dissipation: 500 mW; (3)Input Voltage1: ±18 V; (4)Output Short-Circuit Duration: Indefinite; (5)Differential Input Voltage: +VS and .VS; (6)Storage Temperature Range: -65 to +125℃; (7)Operating Temperature Range: 0 to +70℃; (8)Lead Temperature (Soldering, 60 sec): 300℃.
Features
AD549LHZ features: (1)Ultralow input bias current 60 fA maximum; (2)Input bias current guaranteed over the common-mode voltage range; (3)Low offset voltage; (4)Low offset drift; (5)Low power; (6)700 μA maximum supply current; (7)Low input voltage noise; (8)4 μV p-p over 0.1 Hz to 10 Hz; (9)MIL-STD-883B parts available.
Diagrams
Image | Part No | Mfg | Description | Pricing (USD) |
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AD549LHZ |
IC OPAMP GP 1MHZ LP 20MA TO99-8 |
Data Sheet |
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