The ADA4620 is ideal for high DC precision and AC performance. The specifications make the ADA4620 optimal as a front-end amplifier in a data-acquisition (DAQ) system, or for a TIA circuit with high input impedance.
For only 1.3 mA of supply current per amplifier, the ADA4620 has a gain-bandwidth product of 16.5 MHz, a 32 V/μs slew rate, 5.1 nV/√Hz of broadband noise, and 225 nV p-p of 0.1 Hz to 10 Hz noise. The input voltage range includes the negative supply, and the output swings rail-to-rail.
The ADA4620 is specified for operating over the temperature range of −40°C to +125°C, and dual supplies ranging from ±2.25 V to ±18 V, or on a single supply ranging from +4.5 V to +36 V. The ADA4620- 1 and ADA4620-2 are available in an 8-lead SOIC_N package.
Key Features and Benefits
- Low offset voltage: ±30 μV typ
- Low offset voltage drift: ±0.32 μV/°C typ
- Low input bias current: ±0.8 pA typ, ±5 pA max
- Low 1/f noise: 225 nV p-p, 0.1 Hz to 10 Hz typ
- Voltage noise density: 5.1 nV/√Hz at 1 kHz typ
- Gain bandwidth product: 16 MHz typ
- High slew rate: 32V/μs typ
- Low THD + N: −148 dB at 1 kHz typ
- Low supply current: 1.3 mA per amplifier typ
- Wide power supply range
- Single supply: 4.5 V to 36 V
- Dual supplies: ±2.25 V to ±18 V
- No phase reversal
- Unity-gain stable
- Extended high input common-mode range
- (V+) − 4.4 V < VCM ≤ (V+)
- Multiple channel options:
- ADA4620-1 single channel
- ADA4620-2 dual channel
Applications
- Transimpedance amplifiers
- Electronic test and measurement
- Scientific and field instruments
- Semiconductor test
- Data acquisition systems
- High impedance sensors
Evaluation Board
The ADA4620-2 and ADA4620-1 can be evaluated with the EVAL-ADA4620-1.
Block Diagrams and Tables
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