AD7643 - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

AD7643
Manufacturer

ADI
ChipWorker Part#

CW389445340
Description

16Bit, 250KSPS, Unipolar/Bipolar Programmable Input PulSAR ADC
Documentation

Datasheet

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AD7643 Specifications

Attribute	Attribute Value

Part Number	AD7643
Manufacturer	ADI
ChipWorker Part#	CW389445340
Documentation	Datasheet
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Product Lifecycle Status	Unknown

Product Description

GENERAL DESCRIPTION
The AD7643 is an 18-bit, 1.25 MSPS, charge redistribution SAR, fully differential, analog-to-digital converter (ADC) that operates from a single 2.5 V power supply. The part contains a high speed, 18-bit sampling ADC, an internal conversion clock, an internal reference (and buffer), error correction circuits, and both serial and parallel system interface ports. The part has no latency and can be used in asynchronous rate applications. The AD7643 is hardware factory calibrated and tested to ensure ac parameters, such as signal-to-noise ratio (SNR), in addition to the more traditional dc parameters of gain, offset, and linearity. The AD7643 is only available in Pb-free packages with operation specified from −40°C to +85°C.
FEATURES
Throughput: 1.25 MSPS
INL: ±1.5 LSB typical, ±3 LSB maximum (±11 ppm of full scale)
18-bit resolution with no missing codes
Dynamic range: 95dB typical
SINAD: 93.5dB typical @ 20 kHz (VREF= 2.5 V)
THD: −113dB typical @ 20 kHz (VREF= 2.5 V)
2.048 V internal reference: typical drift 8ppm/°C; TEMP output
Differential input range: ±VREF(VREFup to 2.5 V)
No pipeline delay (SAR architecture)
Parallel (18-, 16-, or 8-bit bus) and serial 5 V/3.3 V/2.5 V interface
SPI®/QSPI™/MICROWIRE™/DSP compatible
Single 2.5 V supply operation
Power dissipation
65mW typical @ 1.25MSPS with internal REF
2 μW in power-down mode
Pb-free, 48-lead LQFP and 48-lead LFCSP_VQ
Pin compatible with the AD7641and other PulSAR ADC’s
APPLICATIONS
Medical instruments
High speed data acquisition/high dynamic data acquisition
Digital signal processing
Spectrum analysis
Instrumentation
Communications
ATE

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- Anti-vibration foam
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- Surface testing

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