The AD7829-1 is a high speed 8-channel, microprocessor-compatible, 8-bit analog-to-digital converter with a maximum throughput of 2 MSPS. The AD7829-1 is an 8-bit half-flash ADC with a conversion time of 420 ns. It features eight single-ended analog input channels and is available with input offset adjust. It has an on-chip track-and-hold circuit and provides SNR performance for input frequencies up to 10 MHz. The AD7829-1 also includes an on-chip reference voltage (2.5 V) and automatically enters power-down mode at the end of conversion. It has a wide operating supply range of 3 V ± 10% and 5 V ± 10%. The input ranges are 0 V to 2 V p-p (VDD = 3 V ± 10%) or 0 V to 2.5 V p-p (VDD = 5 V ± 10%). The AD7829-1 has a flexible parallel interface with an EOC pulse to allow stand-alone operation.
The AD7829-1 is a high‑speed 8‑bit, 8‑channel ADC with a 420 ns conversion time. It includes an on‑chip 2.5 V reference, track‑and‑hold amplifier, and a flexible parallel interface that can operate from a single 3 V ± 10 % or 5 V ± 10 % supply.
Designed for data‑acquisition systems and DSP front ends, the device is offered in 28‑lead SOIC‑W and TSSOP packages and supports automatic power‑down after conversion.
| Resolution | 8 bits |
|---|---|
| Conversion time | 420 ns max |
| On‑chip reference voltage | 2.5 V |
| Supply voltage range | 3 V ± 10 % and 5 V ± 10 % |
| Normal operation current | 12 mA max |
| Power‑down current | 5 pA max |
| Signal‑to‑Noise‑plus‑Distortion Ratio | 48 dB min |
| Total Harmonic Distortion | -55 dB max |
| Channel‑to‑Channel Isolation | -70 dB typ |
The conversion time is 420 ns maximum.
It provides eight single‑ended analog input channels.
It operates from a single 3 V ± 10 % or 5 V ± 10 % supply.
Yes, it includes an on‑chip 2.5 V reference.