Overview
The AD8253, produced by Analog Devices Inc., is a highly versatile instrumentation amplifier designed with digitally programmable gains. It boasts gigaohm (GΩ) input impedance, low output noise, and low distortion, making it an ideal component for interfacing with sensors and driving high sample rate analog-to-digital converters (ADCs). The amplifier offers excellent ac performance, including a high bandwidth of 10 MHz, fast settling time of 780 ns to 0.001%, and a high slew rate of 20 V/μs. Its precision dc performance, coupled with high-speed capabilities, makes it a robust solution for various applications.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Gain | - | 1 | - | 1000 | - |
| Bandwidth | G = 1 | - | 10 MHz | - | - |
| Settling Time | to 0.001% | - | 780 ns | - | - |
| Slew Rate | - | 20 V/μs | - | - | - |
| THD | at 1 kHz, 10 V swing | - | -110 dB | - | - |
| CMRR | at G = 1000, dc to 20 kHz | 100 dB | - | - | - |
| Noise | at G = 1000 | - | 10 nV/√Hz | - | - |
| Offset Drift | at G = 1000 | - | 1.2 μV/°C | - | - |
| Gain Drift | at G = 1000 | - | 10 ppm/°C | - | - |
| Supply Voltage | - | ±5 V | - | ±15 V | - |
| Quiescent Current | - | 4.6 mA | 5.3 mA | 6 mA | - |
| Temperature Range | - | -40°C | - | +85°C | - |
Key Features
- Digitally programmable gains of 1, 10, 100, and 1000
- Gigaohm (GΩ) input impedance
- Low output noise and low distortion
- High bandwidth of 10 MHz
- Fast settling time of 780 ns to 0.001%
- High slew rate of 20 V/μs
- High CMRR of 100 dB at G = 1000 from dc to 20 kHz
- Low offset drift of 1.2 μV/°C and low gain drift of 10 ppm/°C at G = 1000
- Wide supply voltage range of ±5 V to ±15 V
- Available in a 10-lead MSOP package
- Specified over the −40°C to +85°C temperature range
Applications
- Data acquisition
- Biomedical analysis
- Test and measurement
Q & A
- What are the programmable gain settings of the AD8253?
The AD8253 has programmable gains of 1, 10, 100, and 1000. - What is the input impedance of the AD8253?
The AD8253 has a gigaohm (GΩ) input impedance. - What is the bandwidth of the AD8253?
The AD8253 has a bandwidth of 10 MHz at a gain of 1. - What is the settling time of the AD8253?
The settling time of the AD8253 is 780 ns to 0.001%. - What is the slew rate of the AD8253?
The slew rate of the AD8253 is 20 V/μs. - What is the CMRR of the AD8253?
The AD8253 has a CMRR of 100 dB at G = 1000 from dc to 20 kHz. - What is the offset drift of the AD8253?
The offset drift of the AD8253 is 1.2 μV/°C at G = 1000. - What is the gain drift of the AD8253?
The gain drift of the AD8253 is 10 ppm/°C at G = 1000. - What is the supply voltage range of the AD8253?
The supply voltage range of the AD8253 is ±5 V to ±15 V. - In what package is the AD8253 available?
The AD8253 is available in a 10-lead MSOP package.
