AD7671ASTZRL

The AD7671 is a 16-bit, 1MSPS, charge redistribution SAR ADC operating from a 5V single supply. It integrates a high-speed 16-bit sampling ADC, a resistor scaler for input range adjustment, an internal conversion clock, error correction circuitry, and both serial and parallel system interfaces. The AD7671 is factory hardware-calibrated and comprehensively tested to ensure compliance with AC parameters such as SNR and THD, in addition to standard DC parameters (gain, offset, and linearity). It offers three sampling modes: an ultra-high throughput mode (Warp mode); a fast mode (Normal mode) for asynchronous conversion rate applications; and a low-power mode (Pulse mode) for power-sensitive applications, where power consumption scales proportionally with throughput. The AD7671 is a fast, low-power, single-supply, precision 16-bit ADC offering multiple operating modes to optimize performance for specific applications. In Warp mode, the AD7671 can convert 1,000,000 samples per second (1MSPS). The AD7671 provides on-chip sample-and-hold and successive approximation ADC with no pipeline delay, making it ideal for multiplexed multi-channel applications. It supports both bipolar and unipolar input ranges, selectable by changing the connections of the input resistor scaler. The AD7671 operates from a 5V single supply and is compatible with 5V or 3V digital logic interfaces. Available in a 48-lead LQFP or 48-lead LFCSP package, it offers a space-saving, flexible configuration with serial or parallel interface options. The AD7671 is a pin-compatible upgrade to the AD7665 and AD7664.

Applications

• Data Acquisition
• Communication
• Instrumentation
• Spectrum Analysis
• Medical Instruments
• Process Control

Key features

• Throughput: 1 MSPS (Warp mode), 800 kSPS (Normal mode)
• INL: ±2.5 LSB max (±0.0038% of full scale)
• 16-bit resolution, no missing codes
• S/(N+D): 90 dB (typical, 250 kHz)
• THD: -100 dB (typical, 250 kHz)
• Analog input voltage range — Bipolar: ±10 V, ±5 V, ±2.5 V; Unipolar: 0 V to 10 V, 0 V to 5 V, 0 V to 2.5 V
• AC and DC specifications
• No pipeline delay
• Parallel (8/16-bit) and serial 5 V/3 V interface
• SPI/QSPI™/MICROWIRE/DSP compatible
• Single 5 V supply
• Power dissipation: 112 mW typical, 15 μW at 100 SPS, power-down mode: 7 μW (max)
• Package: 48-lead LQFP, 48-lead LFCSP
• Pin-compatible upgrade for AD7665/AD7664