Analog DevicesEVAL-AD7381FMCZData Conversion Development Boards and Kits

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Integrated on-chip oversampling blocks improve dynamic range and reduce noise at lower bandwidths. A buffered internal 2.5 V reference is included. Alternatively, an external reference up to 3.3 V can be used.
The conversion process and data acquisition use standard control inputs allowing easy interfacing to microprocessors or digital signal processors (DSPs). It is compatible with 1.8 V, 2.5 V, and 3.3 V interfaces, using the separate logic supply.
The AD7380/AD7381 are available in a 16-lead lead frame chip scale package (LFCSP) with operation specified from −40°C to +125°C.

Product Highlights:

- Dual simultaneous sampling and conversion with two complete ADC functions.
- Pin-compatible product family.
- High 4 MSPS throughput rate.
- Space saving 3 mm × 3 mm LFCSP package.
- 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.

Applications:

- Motor control position feedback
- Motor control current sense
- Sonar
- Power quality
- Data acquisition systems
- EDFA applications
- I and Q demodulation

Features and Benefits:

- 16-bit/14-bit ADC family
- Dual simultaneous sampling
- Fully differential analog inputs
- 4 MSPS throughput conversion rate
- SNR (typical)
-92.5 dB, VREF = 3.3 V external at AD7380 (16-bit)
-85.4 dB, VREF = 3.3 V external at AD7381 (14-bit)
- On-chip oversampling function
- Resolution boost function
- SNR 102.8 dB (typical) with ×32 OSR
- INL (maximum)
-2.0 LSBs at 16-bit
-1.0 LSB at 14-bit
- 2.5 V internal reference at 10 ppm/°C
- High speed serial interface
- −40°C to +125°C operation
- 16-lead LFCSP, 3 mm × 3 mm
- Wide common-mode range
- Alert function