The AD7262 is a 12-bit analog-to-digital converter with a sampling rate of 1 MSPS and simultaneous sampling of two channels. It features a programmable gain amplifier and four comparators, and supports true differential analog inputs. The product offers high precision and low power consumption, making it suitable for a variety of applications.
The AD7262 (and AD7262‑5) are dual simultaneous‑sampling 12‑bit SAR ADCs offering up to 1 MSPS (500 kSPS for the ‑5 variant). Each channel includes a true differential input followed by a programmable gain amplifier with 14 gain settings, and four on‑chip comparators for sensor signal processing. An internal 2.5 V reference can be used or disabled for an external reference, making the device suitable for monitoring low‑level analog signals such as encoder feedback in motor‑control applications.
The datasheet provides full electrical specifications, timing diagrams, pin configurations, absolute maximum ratings, and recommended PCB layout guidelines. It also describes calibration functions, power‑down modes, and serial interface options (SPI/QSPI/MICROWIRE/DSP compatible).
| Resolution | 12 Bits |
|---|---|
| Throughput Rate (AD7262) | 1 MSPS |
| Input Impedance | >1 GΩ |
| On‑chip Reference Voltage | 2.5 V (disableable) |
| Operating Temperature Range | –40 °C to +105 °C |
| Supply Voltage (AVcc) | 4.75 V to 5.25 V |
| PGA Gain Settings | 14 settings (x1 to x128) |
| Signal‑to‑Noise Ratio (gain = 2) | 73 dB typical |
| Common‑Mode Rejection Ratio | -76 dB |
The AD7262 can sample at up to 1 MSPS per ADC.
It offers 14 gain settings ranging from x1 to x128.
The device includes an internal 2.5 V reference that can be disabled if an external reference is used.
It operates from –40 °C up to +105 °C.