SPT7861SCS ,10-bit, 40 MSPS, 160 mW A/D converterELECTRICAL SPECIFICATIONST =T to T , AV =DV =OV =+5.0 V, V =0 to 4 V, ƒ =40 MSPS, V =4.0 V, V =0.0 ..
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SPT7861SCS-SPT7861SCT
10-bit, 40 MSPS, 160mW ADC
SPT7861
10-BIT, 40 MSPS, 160 mW A/D CONVERTER
TECHNICAL DATAJUNE 25, 2001
FEATURES Monolithic 40 MSPS converter 160 mW power dissipation On-chip track-and-hold Single +5 V power supply TTL/CMOS outputs 5 pF input capacitance Low cost Tri-state output buffers High ESD protection: 3,500 V minimum Selectable +3 V or +5 V logic I/O
APPLICATIONS All high-speed applications where low power
dissipation is required Video imaging Medical imaging Radar receivers IR imaging Digital communications
GENERAL DESCRIPTIONThe SPT7861 is a 10-bit monolithic, low-cost, ultralow-
power analog-to-digital converter capable of minimum
word rates of 40 MSPS. This is a pin-compatible improved
version of the SPT7860. The on-chip track-and-hold func-
tion assures excellent dynamic performance without the
need for external components. The input drive require-
ments are minimized due to the SPT7861’s low input
capacitance of only 5 pF.
Power dissipation is extremely low at only 160 mW typical
at 40 MSPS with a power supply of +5.0 V. The digital out-
puts are +3 V or +5 V, and are user selectable. The
SPT7861 is pin-compatible with an entire family of 10-bit,
CMOS converters (SPT7835/40/50/55/60/61), which sim-
plifies upgrades. The SPT7861 has incorporated propri-
etary circuit design and CMOS processing technologies to
achieve its advanced performance. Inputs and outputs are
TTL/CMOS-compatible to interface with TTL/CMOS logic
systems. Output data format is straight binary.
The SPT7861 is available in 28-lead SOIC and 32-lead
small (7 mm square) TQFP packages over the commer-
cial temperature range.
BLOCK DIAGRAM
