www.cadeka.com
SPT7851
10-Bit, 20 MSPS, 79mW
Analog-to-DIgital Converter
Features
• 10-Bit, 20 MSPS Analog-to-Digital converter
• Monolithic CMOS
• Internal track-and-hold
• Low input capacitance: 1.4 pF
• Low power dissipation: 79mW
• 2.8 to 3.6V power supply range
• TTL-compatible outputs
• -40°C to +85°C operation
Description
The SPT7851 10-bit, 20 MSPS analog-to-digital converter
has a pipelined converter architecture built in a CMOS
process. It delivers high performance with a typical power
dissipation of only 79mW. With low distortion and high
dynamic range, this device offers the performance needed
for imaging, multimedia, telecommunications and instru-
mentation applications.
The SPT7851 is available in a 44-lead Thin Quad Flat Pack
(TQFP) package in the industrial temperature range (-40°C
to +85°C).
Applications
• CCD imaging cameras and sensors
• Medical imaging
• RF communications
• Document and film scanners
• Electro-optics
• Transient signal analysis
• Handheld equipment
Functional Block Diagram
ADC
DAC
+
– G=2
D<1…0> Pipeline Stage
VIN+
VIN–
VREF+
VREF–
CLK
Clock
Driver
Digital Delays, Error Correction and Output
10
Digital Output (D0 – D9)
Stage
1
Stage
2
Stage
9
Stage
10
REV. 1B October 2003
CADEKA [ CADEKA MICROCIRCUITS LLC. ]
