The AD7988-1/AD7988-5 are 16-bit lower power PulSAR ADCs from Analog Devices. They offer 100 kSPS and 500 kSPS conversion rates, and ±0.6 LSB typical I / N and 91.5 dB typical S / N. AD7988-1/AD7988-5 use a pseudo-differential input that can be input from 0 V to VREF, with VREF ranging from 2.5 V to 5.5 V. They support 1.8 V to 5 V logic interface and provide SPI-/QSPI-/MICROWIRE™-/DSP compatible serial interface. The AD7988-1/AD7988-5 use a 10-pin MSOP and a 10-pin LFCSP package, which can meet the needs of a variety of applications.
The AD7988‑1/AD7988‑5 are 16‑bit successive‑approximation ADCs that operate from a single 2.5 V supply and support a wide range of logic levels (1.8 V‑5 V). They feature low power dissipation (AD7988‑5: 3.5 mW @ 500 kSPS, AD7988‑1: 100 µW @ 100 kSPS) and a pseudo‑differential input range of 0 V to VREF.\n\nThese devices are intended for battery‑powered equipment, low‑power data‑acquisition systems, portable medical instruments, and ATE applications. Key specifications include a −40 °C to +125 °C operating temperature range, 10 MHz input bandwidth, and a serial SPI/QSPI interface that can be daisy‑chained for multiple converters.
| Resolution | 16 Bits |
|---|---|
| Power Dissipation (AD7988‑5) | 3.5 mW @ 500 kSPS |
| Input Voltage Range | 0 V to VREF |
| Operating Temperature Range | −40 °C to +125 °C |
| Supply Voltage (VDD) | 2.5 V |
| Package Options | 10‑lead MSOP and 10‑lead LFCSP (QFN) |
| Input Bandwidth (−3 dB) | 10 MHz |
The AD7988‑5 can sample at up to 500 kSPS.
It operates from a 2.5 V supply (VDD) with VIO ranging from 2.3 V to 5.5 V.
The devices are offered in 10‑lead MSOP and 10‑lead LFCSP (QFN) packages.
The input bandwidth is 10 MHz (−3 dB).