This document describes the AD7441/AD7451 8-lead SOT-23 analog-to-digital converters (ADCs) with pseudo differential input, 1 MSPS sampling rate, and 10-/12-bit resolution. It features low power consumption, flexible power/serial clock speed management, high-speed serial interface, and more. The ADC is suitable for transducer interface, battery-powered systems, data acquisition systems, and portable instrumentation.
The AD7441 and AD7451 are high‑speed, low‑power, single‑supply SAR analog‑to‑digital converters featuring a pseudo‑differential analog input. They operate from a 2.7 V to 5.25 V supply and deliver up to 1 MSPS throughput with no pipeline delays. Key features include flexible power/clock management, a shutdown mode, and a high‑speed serial interface (SPI/QSPI/MICROWIRE/DSP compatible).
These converters are offered in 8‑lead SOT‑23 and MSOP packages and are intended for transducer interfaces, battery‑powered systems, data‑acquisition equipment, and portable instrumentation. The document provides detailed specifications, timing diagrams, pin configurations, and application notes.
| Throughput Rate | 1 MSPS max |
|---|---|
| Power Consumption at 3 V, 1 MSPS | 4 mW max |
| Power Consumption at 5 V, 1 MSPS | 9.25 mW max |
| Input Voltage Range | 2.7 V to 5.25 V |
| Operating Temperature Range | -40 °C to +85 °C |
| Conversion Time | 888 ns (16 SCLK cycles) |
The devices can operate up to 1 MSPS maximum throughput.
They consume up to 4 mW maximum power at 3 V with a 1 MSPS throughput rate.
Both parts are offered in 8‑lead SOT‑23 and MSOP packages.
The devices are rated for –40 °C to +85 °C.