AD7608BSTZ-RL

ADC Single SAR 200KSPS 18Bit Parallel/Serial 64Pin LQFP T/R

Product Details

The AD7608 is an 18-bit, 8 channel, simultaneous sampling Analog-to-Digital Data Acquisition system DAS. The part contains analog input clamp protection, 2nd order anti-alias filter, track and hold amplifier, 18-bit charge redistribution successive approximation ADC, flexible digital filter, 2.5V reference and reference buffer and high speed serial and parallel interfaces. 

The AD7608 operates from a single 5V supply and can accommodate ± 10V and ±5V true bipolar input signals while sampling at throughput rates up to 200 kSPS for all channels. The input clamp protection circuitry can tolerate voltages up to ±16.5V. The AD7608 has 1 MΩ analog input impedance regardless of sampling frequency. The single supply operation, on chip filtering and high input impedance eliminates the need for driver op-amps and external bipolar supplies. The AD7608 antialias filter has a 3 dB cut off frequency of 22 kHz and provides 40 dB anti-alias rejection when sampling at 200ksps. The flexible digital filter is pin driven, yields improvements in SNR, and reduces the 3 dB bandwidth.

**Applications**

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Power line monitoring and protection systems

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Multiphase Motor Control

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Instrumentation and control systems

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Multi-axis positioning systems

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Data Acquisition Systems

### Features and Benefits

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8 Simultaneously Sampled Inputs

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True bipolar analog input ranges: ±10 V, ±5 V

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Single 5V Analog Supply, 2.3V to +5V VDRIVE

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1MΩ Analog Input Impedance

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2nd Order Anti-alias Analog Filter

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7kV ESD rating on Analog input channels

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Analog Input Over Voltage Clamp Protection

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Over-sampling capability with digital filter,

e.g. 96dB SNR at 50 ksps

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Fast throughput rate: 200 kSPS for all channels

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90dB SNR at 200ksps

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Low power: 80 mW at 200 kSPS, 10 mW per channel

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On-chip accurate reference and reference buffer

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See data sheet for additional features