The LTC1292 and LTC1297 are 12‑bit successive‑approximation A/D converters with a differential input, built‑in sample‑and‑hold, and a three‑wire serial interface. The LTC1292 can digitize signals at up to 60 kHz, while the LTC1297 includes an automatic power‑down mode that reduces supply current to about 5 µA when idle.
The document lists absolute maximum ratings, electrical characteristics, typical performance curves, pin functions, package options (8‑lead ceramic and plastic DIP), and application notes such as an opto‑isolated temperature monitor. It also provides ordering information and a block diagram of the converter architecture.
| Resolution | 12 Bits |
|---|---|
| Fast Conversion Time | 12 µs Max |
| Low Supply Current | 6.0 mA |
| Shutdown Supply Current (LTC1297) | 5 µA |
| Maximum Throughput Rate (LTC1292) | 60 kHz |
| Supply Voltage (VCC) Range | 0 V to 12 V |
| Clock Frequency | 1.0 MHz |
The LTC1292 can digitize signals at a maximum rate of 60 kHz.
When idle, the LTC1297 automatically powers down, lowering the supply current to about 5 µA.
Pin 6 is the Digital Data Output (Dout) that shifts out the A/D conversion result.
The devices are offered in an 8‑lead ceramic DIP (J8) and an 8‑lead plastic DIP (N8).