AD620ARZ-REEL7 Amplifier IC Chip Low Power Instrumentation 1
Circuit 8-SOIC
low drift, low power, high accuracy, and is ideal for
high-precision applications
Description:
AD620 comes in 8-lead SOIC and DIP packages and are low-cost,
high-accuracy instrumentation amplifiers that, with an external
resistor, allow the user to set gains of 1 to 10,000. The small
footprint design and low power consumption (only 1.3 mA (maximum)
supply current) make it a good fit for portable or remote
applications that require a battery.
The AD620, with its high accuracy of 40 ppm (maximum) nonlinearity,
low offset voltage of 50 µV (maximum), and offset drift of 0.6
µV/°C (maximum), is ideal for use in precision data acquisition
systems such as weigh scales and transducer interfaces.
Furthermore, the low noise, low input bias current, and low power
of the AD620 make it well suited for medical applications such as
ECG and noninvasive blood pressure monitors.
The low input bias current of 1.0 nA (maximum) is made possible
with the use of Superϐeta processing in the input stage. The AD620
works well as a preamplifier due to its low input voltage noise of
9 nV/√Hz at 1 kHz, 0.28 μV p-p in the 0.1 Hz to 10 Hz band, and 0.1
pA/√Hz input current noise. Also, the AD620 is well suited for
multiplexed applications with its settling time of 15 μs to 0.01%,
and its cost is low enough to enable designs with one in-amp per
channel.
| Features |
- Easy to use
- Gain range of 1 to 10,000 with one external resistor
- Wide power supply range (±2.3 V to ±18 V)
- Higher performance than three op amp IA designs
- Low power, 1.3 mA (max.) supply current
- 50 μV (max.), input offset voltage
- 0.6 μV/°C (maximum) input offset drift
| - 1.0 nA (max.), input bias current
- 100 dB (min.) common-mode rejection ratio (G = 10)
- Low noise
- 9 nV/√Hz at 1 kHz input voltage noise
- 0.28 μV p-p noise (0.1 Hz to 10 Hz)
- 120 kHz bandwidth (G = 100)
- 15 μs settling time to 0.01%
|
Applications
Application areas include limit comparators, simple analog to
digital converters; pulse, squarewave and time delay generators;
wide range VCO; MOS clock timers; multivibrators and high voltage
digital logic gates.
• Battery Powered Applications
• Industrial Applications
