Sigma-delta analog-to-digital converter provides 24-bit resolution with a maximum fully filtered output word rate of 2.5 MHz. The converter achieves 100 dB typical SNR at 2.5 MSPS and 112 dB typical SNR at a 78 kHz output data rate. It includes a fully differential modulator input, on-chip differential amplifier, reference buffer, programmable decimation, and a low-pass FIR filter with default or user-programmable coefficients. Operation is specified from −40°C to +85°C in a 64-lead exposed-pad TQFP package.
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| Resolution | 24bit |
| Maximum output word rate | 2.5MSPS |
| Dynamic range at 78 kHz ODR | 120.5 typdB |
| Dynamic range at 2.5 MHz ODR | 100.5 typdB |
| SNR at 78 kHz ODR | 112 typdB |
| SNR at 2.5 MHz ODR | 100 typdB |
| Oversampling rate | 8 to 256 programmablex |
| Master clock frequency | 1 min, 40 maxMHz |
| Input type | Fully differential modulator input |
| Differential input voltage with 4.096 V reference | ±3.25V p-p |
| Reference input voltage maximum | 4.096V |
| Normal mode power dissipation | 958 maxmW |
| Low power mode power dissipation | 661 maxmW |
| Standby mode power dissipation | 6.35 maxmW |
| Operating temperature range | −40 to +85°C |
| Package | 64-lead TQFP_EP, SV-64-2 |
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These are design resources that include the Analog Devices AD7760
User guide for the EVAL-AD7760EDZ and EVAL-AD7762EDZ evaluation boards, used to evaluate the AD7760 and AD7762 24-bit Sigma-Delta ADCs with the EVAL-CED1Z controller.
