The AD7694 is a 16-bit, 250 kSPS PulSAR® ADC in MSOP package. It features 16-bit resolution with no missing codes and operates at a throughput of 250 kSPS. The ADC offers low INL and high S/(N+D) ratio, making it suitable for applications such as battery-powered equipment, data acquisition, medical instruments, and process control.
The AD7694 is a 16‑bit charge‑redistribution successive‑approximation PulSAR analog‑to‑digital converter that operates from a single supply of 2.7 V to 5.25 V. It offers up to 250 kSPS throughput, no missing codes, and a serial SPI‑compatible interface, making it suitable for battery‑powered data‑acquisition and instrumentation applications.
The datasheet provides detailed specifications, timing parameters, absolute maximum ratings, pin descriptions, and layout recommendations. It also includes an ordering guide, evaluation‑board information, and typical performance characteristics such as INL, SNR and power consumption.
| Resolution | 16 bits |
|---|---|
| Supply Voltage Range | 2.7 V to 5.25 V |
| Maximum Throughput | 250 kSPS |
| Integral Nonlinearity (INL) | ±4 LSB max |
| Signal‑to‑Noise Ratio (SNR) | 92 dB @ 20 kHz |
| Total Harmonic Distortion (THD) | -106 dB @ 20 kHz |
| Power‑down Current | 540 pA @ 2.7 V, 800 pA @ 5 V (100 kSPS) |
| Standby Current | 1 nA |
| Operating Temperature Range | -40 °C to +85 °C |
| Package | 8‑lead MSOP |
The AD7694 can sample up to 250 kSPS when powered at 5 V.
It operates from a single supply between 2.7 V and 5.25 V.
Standby current is specified as 1 nA.