AD677KRZ-REEL

ADC Single SAR 100KSPS 16Bit Serial 28Pin SOIC W T/R

Product Details

The AD677 is a multipurpose 16-bit serial output analog-to- digital converter which utilizes a switched-capacitor/charge redistribution architecture to achieve a 100 kSPS conversion rate 10 µs total conversion time. Overall performance is optimized by digitally correcting internal nonlinearities through on-chip autocalibration.

The AD677 circuitry is segmented onto two monolithic chips- a digital control chip fabricated on Analog Devices DSP CMOS process and an analog ADC chip fabricated on our BiMOS II process. Both chips are contained in a single package.

The AD677 is specified for ac or "dynamic" parameters such as S/N+D Ratio, THD and IMD which are important in signal processing applications. In addition, dc parameters are specified which are important in measurement applications.

The AD677 operates from +5 V and ±12 V supplies and typically consumes 450 mW using a 10 V reference 360 mW with 5 V reference during conversion. The digital supply VDD is separated from the analog supplies VCC, VEE for reduced digital crosstalk. An analog ground sense is provided to remotely sense the ground potential of the signal source. This can be useful if the signal has to be carried some distance to the A/D converter. Separate analog and digital grounds are also provided.

The AD677 is available in a 16-pin narrow plastic DIP, 16-pin narrow side-brazed ceramic package, or 28-lead SOIC. A parallel output version, the AD676, is available in a 28-pin ceramic or plastic DIP. All models operate over a commercial temperature range of 0°C to +70°C or an industrial range of -40°C to +85°C.

### Features and Benefits

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Autocalibrating

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On-Chip Sample-Hold Function

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Serial Output

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16 Bits No Missing Codes

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±1 LSB INL

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–99 dB THD

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92 dB S/N+D

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1 MHz Full Power Bandwidth