SPT7863 Ver la hoja de datos (PDF) - Signal Processing Technologies
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SPT7863 Datasheet PDF : 9 Pages
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SPT
SIGNAL PROCESSING TECHNOLOGIES
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
SPT7863
10-BIT, 40 MSPS,160 mW A/D CONVERTER
APPLICATIONS
• All High-Speed Applications Where
Low Power Dissipation is Required
• Video Imaging
• Medical Imaging
• Radar Receivers
• IR Imaging
• Digital Communications
GENERAL DESCRIPTION
The SPT7863 is a 10-bit monolithic, low cost, ultralow power
analog-to-digital converter capable of minimum word rates
of 40 MSPS. The on-chip track-and-hold function assures
very good dynamic performance without the need for exter-
nal components. The input drive requirements are mini-
mized due to the SPT7863'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 outputs
are +3 V or +5 V, and are user selectable. The SPT7863 is
pin-compatible with the entire family of SPT 10-bit, CMOS
converters (SPT7835/40/50/55/60/61) which simplifies up-
grades. The SPT7863 has incorporated proprietary 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. Out-
put data format is straight binary.
The SPT7863 is available in 28-lead SOIC and 32-lead small
(7 mm square) TQFP packages over the commercial tem-
perature range.
BLOCK DIAGRAM
1:16
AIN
Mux
CLK In
Enable
Data
Valid
P1
P2
Timing ...
and P15
Control
P16
Ref
In
ADC Section 1
T/H
Auto-
Zero
CMP
ADC Se...ction 2
ADC Section 15
ADC Section 16
T/H
Auto-
Zero
CMP
11-Bit
SAR
11
DAC
...
11-Bit
SAR
11
DAC
Reference Ladder
VREF
11
11
... 11
11
11-Bit
16:1
Mux/
Error
Correction
D10 Overrange
D9 (MSB)
D8
D7
D6
D5
D4
D3
D2
D1
DØ (LSB)
Signal Processing Technologies, Inc.
4755 Forge Road, Colorado Springs, Colorado 80907, USA
Phone: (719) 528-2300 FAX: (719) 528-2370
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