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SBES012 – OCTOBER 2008
DUAL-CHANNEL IMAGE SENSOR ANALOG FRONT-END
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FEATURES
DESCRIPTION
The VSP2590 is a dual-channel analog front-end for
processing imager output signals. The device
includes a correlated double sampler (CDS),
programmable gain amplifier (PGA), analog-to-digital
converter (ADC), input clamp, optical black (OB) level
clamp loop, serial interface, adjustable sampling
timing control, and reference voltage generator. The
VSP2590 also provides a sample/hold (S/H) input
mode.
The VSP2590 is offered in a BGA-159 package and
operates on a single +3 V supply.
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Dual-Channel Image Signal Processing:
41.5-MHz Correlated Double Sampling (CDS)
Provided Sample/Hold (S/H) Mode
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Output Resolution: 16 Bits
•
16-Bit Analog-to-Digital Conversion:
41.5-MHz Conversion Rate (per Channel)
No Missing Codes Ensured
•
75-dB Input-Referred SNR (at 0-dB Gain)
•
Programmable Black Level Clamping
•
Programmable Gain Amplifier (PGA):
–3 dB to +18 dB (through Analog Front Gain)
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Portable Operation:
Low Voltage: 2.7 V to 3.3 V
Low Power: 290 mW at 3.0 V, 36 MHz
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Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
Copyright © 2008, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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