AD7612 16-Bit, 750 kSPS, Unipolar/Bipolar Programmable Input PulSAR® ADC

The AD7612 is a 16-bit charge redistribution successive approximation register (SAR), architecture analog-to-digital converter (ADC) fabricated on Analog Devices, Inc.'s iCMOS high voltage process. The device is configured through hardware or via a dedicated write only serial configuration port for input range and operating mode. The AD7612 contains a high speed 16-bit sampling ADC, an internal conversion clock, an internal reference (and buffer), error correction circuits, and both serial and parallel system interface ports. A falling edge on CNVST samples the analog input on IN+ with respect to a ground sense, IN–. The AD7612 features four different analog input ranges and three different sampling modes: warp mode for the fastest throughput, normal mode for the fastest asynchronous throughput, and impulse mode where power consumption is scaled linearly with throughput. Operation is specified from −40°C to +85°C. ol { margin-top:0px; margin-right:0px; margin-bottom:0px; margin-left:25px; padding-top:0px; padding-right:0px; padding-bottom:10px; padding-left:0px;} li { padding-top:0px; padding-right:0px; padding-bottom:5px; padding-left:0px; margin-top:0px; margin-right:0px; margin-bottom:0px; margin-left:0px;} Programmable input range and mode selection. Pins or serial port for selecting input range/mode select. Fast throughput. In warp mode, the AD7612 is 750 kSPS. Superior Linearity. No missing 16-bit code. ±1.5 LSB max INL. Internal Reference. 5 V internal reference with a typical drift of ±3 ppm/°C and an on-chip temperature sensor. Serial or Parallel Interface. Versatile parallel (16- or 8-bit bus) or 2-wire serial interface arrangement compatible with 3.3 V or 5 V logic.

Product Highlights

Programmable input range and mode selection. Pins or serial port for selecting input range/mode select.
Fast throughput. In warp mode, the AD7612 is 750 kSPS.
Superior Linearity. No missing 16-bit code. ±1.5 LSB max INL.
Internal Reference. 5 V internal reference with a typical drift of ±3 ppm/°C and an on-chip temperature sensor.
Serial or Parallel Interface. Versatile parallel (16- or 8-bit bus) or 2-wire serial interface arrangement compatible with 3.3 V or 5 V logic.

Applications

Process control
Medical instruments
High speed data acquisition
Digital signal processing
Instrumentation
Spectrum analysis
ATE

Features and Benefits

Multiple pins/software programmable input ranges: 5 V, 10 V, ±5 V, ±10 V

Pins or serial SPI®-compatible input ranges/mode selection

Throughput
750 kSPS (warp mode)
600 kSPS (normal mode)
500 kSPS (impulse mode)

INL: ±0.75 LSB typical, ±1.5 LSB maximum (±23 ppm of FSR)

16-bit resolution with no missing codes

SNR: 92 minimum (5 V) @ 2 kHz, 94 dB typical (±10 V) @ 2 kHz

THD: −107 dB typical

iCMOS™ process technology

5 V internal reference: typical drift 3 ppm/°C; TEMP output

No pipeline delay (SAR architecture)

Parallel (16- or 8-bit bus) and serial 5 V/3.3 V interface

SPI-/QSPI™-/MICROWIRE™-/DSP-compatible

Analog to Digital Converters

A/D Converters

Building Technology

White Goods and Vending

Data Sheets

Document	note
AD7612: 16-Bit, 750 kSPS, Unipolar/Bipolar Programmable Input PulSAR® ADC Data Sheet (Rev. A)	PDF 2876 kB

Application Notes

Document	note
AN-931: Understanding PulSAR ADC Support Circuitry (Rev. 0)	PDF 299 kB
AN-1141: Powering a Dual Supply Precision ADC with Switching Regulators (Rev. 0)	PDF 640 kB
AN-932: Power Supply Sequencing (Rev. 0)	PDF 95 kB

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 100-499	Price 1000+	RoHS
AD7612BCPZ Production	48 ld LFCSP 7x7mm (5.1EP)	OTH 260	-40 to 85C	32.58	29.45	Y
AD7612BCPZ-RL Production	48 ld LFCSP 7x7mm (5.1EP)	REEL 2500	-40 to 85C	0	29.45	Y
AD7612BSTZ Production	48 ld LQFP	OTH 250	-40 to 85C	32.58	29.45	Y
AD7612BSTZ-RL Production	48 ld LQFP	REEL 2000	-40 to 85C	0	29.45	Y