AD7380-4

The AD7380-4 is a 16-bit compatible, quad, simultaneous sampling, high speed, successive approximation register (SAR), analog-to-digital converters (ADC) operating from a 3.3 V power supply with throughput rates up to 4 MSPS. The differential analog input accepts a wide common-mode input voltage and is sampled and converted on the falling edge of CS.

The AD7380-4 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. The REFIN pin can have a reference voltage of 2.5 V to 3.3 V.

The conversion process and data acquisition use standard control inputs allowing 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 AD7380-4 is available in a 24-lead lead frame chip scale package (LFCSP) and operates over a temperature range of −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

• Quad simultaneous sampling and conversion
• Pin-compatible product family.
• High throughput rate, 4 MSPS at 16-bit.
• Space-saving, 4 mm × 4 mm LFCSP.
• Integrated oversampling block to increase dynamic range, reduce noise and reduce SCLK speed requirements.
• Differential analog inputs with wide common-mode range.
• Small sampling capacitor reduces amplifier drive burden.