16-Bit, 10 MSPS, PulSAR Differential ADC

The AD7626 is a 16-bit, 10 MSPS, charge redistribution successive approximation register (SAR) based architecture analog-to-digital converter (ADC). SAR architecture allows unmatched performance both in noise (91.5 dB SNR) and in linearity (±0.45 LSB INL). The AD7626 contains a high speed, 16-bit sampling ADC, an internal conversion clock, and an internal buffered reference. On the CNV edge, it samples the voltage difference between the IN+ and IN− pins. The voltages on these pins swing in opposite phase between 0 V and REF. The 4.096 V reference voltage, REF, can be generated internally or applied externally.

All converted results are available on a single low voltage differential signaling (LVDS) self clocked or echoed clock serial interface, reducing external hardware connections.

The AD7626 is housed in a 32-lead, 5 mm × 5 mm LFCSP with operation specified from −40°C to +85°C.

Applications

* Digital imaging systems

– Digital X-ray

– Digital MRI

– CCD and IR cameras

* High speed data acquisition

* High dynamic range telecommunications receivers

* Spectrum analysis

* Test equipment

* Throughput: 10 MSPS

* SNR: 91.5 dB

* 16-bit no missing codes

* INL: ±0.45 LSB

* DNL: ±0.35 LSB

* Power dissipation: 136 mW

* 32-lead LFCSP (5 mm × 5 mm)

* SAR architecture

* No latency/pipeline delay

* 16-bit resolution with no missing codes

* Zero error: ±1 LSB

* Differential input range: ±4.096 V

* See data sheet for additional features