AD9260

Features:

Monolithic 16-Bit, Oversampled A/D Converter
8
Oversampling Mode, 20 MSPS Clock
2.5 MHz Output Word Rate
1.01 MHz Signal Passband w/0.004 dB Ripple
Signal-to-Noise Ratio: 88.5 dB
Total Harmonic Distortion: 96 dB
Spurious Free Dynamic Range: 100 dB
Input Referred Noise: 0.6 LSB
Selectable Oversampling Ratio: 1
, 2
, 4
, 8

Selectable Power Dissipation: 150 mW to 585 mW
85 dB Stopband Attenuation
0.004 dB Passband Ripple
Linear Phase
Single +5 V Analog Supply, +5 V/+3 V Digital Supply
Synchronize Capability for Parallel ADC Interface
Twos-Complement Output Data
44-Lead MQFP




Pinout






Specifications



AVDD AVSS 0.3 +6.5 V
DVDD DVSS 0.3 +6.5 V
AVSS DVSS 0.3 +0.3 V
AVDDDVDD6.5 +6.5 V
DRVDD DRVSS 0.3 +6.5 V
DRVSS AVSS 0.3 +0.3V
REFCOMAVSS0.3 +0.3 V




Description

The AD9260 is a 16-bit, high-speed oversampled analog-to-digital converter (ADC) that offers exceptional dynamic range over a wide bandwidth. The AD9260 is manufactured on an advanced CMOS process. High dynamic range is achieved with an oversampling ratio of 8* through the use of a proprietary technique that combines the advantages of sigma-delta and pipeline converter technologies.

The AD9260 is a switched-capacitor ADC with a nominal full-scale input range of 4 V. It offers a differential input with 60 dB of common-mode rejection of common-mode signals. The signal range of each differential input is ±1 V centered on a 2.0 V common-mode level. The on-chip decimation filter is configured for maximum performance and flexibility. A series of three half-band FIR filter stages provide 8* decimation filtering with 85 dB of stopband attenuation and 0.004 dB of passband ripple. An onboard digital multiplexer allows the user to access data from the various stages of the decimation filter. The on-chip programmable reference and reference buffer amplifier are configured for maximum accuracy and flexibility. An external reference can also be chosen to suit the user's specific dc accuracy and drift requirements.