SPT7862 Datasheet, PDF (1/10 Pages) List of Unclassifed Manufacturers – 10-BIT, 40 MSPS, DUAL-CHANNEL A/D CONVERTER

SPT7862
10-BIT, 40 MSPS, DUAL-CHANNEL A/D CONVERTER
FEATURES
• Dual-channel, 10-Bit, 40 MSPS analog-to-digital
converter
• Low power dissipation: 320 mW (typical)
• Internal track-and-hold
• Single +5 volt supply
• Tri-state, TTL/CMOS-compatible outputs
• Selectable +3 or +5 V logic I/O
• High ESD protection of 3,500 volts minimum
GENERAL DESCRIPTION
The SPT7862 contains two separate 10-bit CMOS analog-
to-digital converters that have sampling rates of up to 40
MSPS. Each device has its own separate clock and refer-
ence inputs so that they can be used independently in
multichannel applications or can be driven from the same
inputs for demanding quadrature demodulation and S-video
applications. On-chip track-and-hold and advanced propri-
etary circuit design in a CMOS process technology provide
very good dynamic performance.
APPLICATIONS
• Video set-top boxes
• Cellular base stations
• QPSK/QAM RF demodulation
• S-video digitizers
• Composite video digitizers
• Portable and handheld instrumentation
• Medical ultrasound
• Cable modems
• Video frame grabbers
The SPT7862 operates from a single +5 V supply. Digital
data outputs are user selectable at +3 or +5 V. Output data
format is straight binary.
The SPT7862 is available in a 64-lead TQFP package
(10 x 10 mm) over the industrial temperature range of
–40 °C to +85 °C.
BLOCK DIAGRAM
AV_DD AGND DV_DD DGND
V_INA
V_INRA
V_RHFA
V_RHSA
V_RLFA
V_RLSA
CLK A
V_INB
V_INRB
V_RHFB
V_RHSB
V_RLFB
V_RLSB
CLK B
ADC
Reference
Ladder
Timing
Generation
ADC
Reference
Ladder
Timing
Generation
Output
Buffers
Output
Buffers
OV_DDA (+3.3/5.0 V)
DA9–0
OGND_A
DAV_A
EN
OV_DDB (+3.3/5.0 V)
DB9–0
OGND_B
DAV_B
Signal Processing Technologies, Inc.
4755 Forge Road, Colorado Springs, Colorado 80907, USA
Phone: [phone] FAX: [phone] Website: http://www.spt.com E-Mail: [e-mail]