Analog Devices AD7389-4 Product Info

The AD7389-4 a 16-bit, quad, simultaneous sampling, high speed, successive approximation register (SAR), analog-to-digital converter (ADC) that operates from a 3.0 V to 3.6 V power supply and features throughput rates up to 2 MSPS. The analog input type is differential, accepts a wide common-mode input voltage, and the analog inputs are sampled and converted on the falling edge of CS.

The AD7389-4 has on-chip oversampling blocks to improve dynamic range and reduce noise at lower bandwidths. The oversampling can boost up to two bits of added resolution. A buffered internal 2.5 V reference (10 ppm/°C) is included.

The conversion process and data acquisition use standard control inputs allowing for easy interfacing to microprocessors or digital signal processors (DSPs). The conversion result can clock out simultaneously via 4-wire mode for faster throughput or via 1-wire serial mode when slower throughput is allowed. The device is compatible with 1.8 V, 2.5 V, and 3.3 V interfaces, using the separate logic supply.

The AD7389-4 is available in a 24-lead lead frame chip scale package (LFCSP) with operation specified from −40°C to +125°C.

APPLICATIONS

• Motor control position feedback
• Motor control current sense
• Data acquisition systems
• Erbium doped fiber amplifier (EDFA) applications
• In phase and quadrature demodulation

PRODUCT HIGHLIGHTS

1. Quad simultaneous sampling and conversion.
2. Pin-compatible product family.
3. High throughput rate, 2 MSPS at 16-bit.
4. Space-saving, 4 mm × 4 mm LFCSP.
5. Integrated oversampling block to increase dynamic range, reduce noise and reduce SCLK speed requirements.
6. Differential analog inputs with wide common-mode range.
7. Small s