SPT8100SIT Ver la hoja de datos (PDF) - Signal Processing Technologies
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SPT8100SIT Datasheet PDF : 10 Pages
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SPT8100
16-BIT, 5 MSPS CMOS A/D CONVERTER
FEATURES
• 16-bit, 5 MSPS CMOS analog-to-digital converter
• On-chip PGA: gain range from 0 to 20 dB in seven
selectable settings:
0 dB, +3 dB, +6 dB, +12 dB, +15 dB, +18 dB, +20 dB
• DNL: ±0.5 LSB, INL: ±1.25 LSB
• SFDR: 94 dB @ ƒIN = 900 kHz, –8.1 dBFS
• Internal sample-and-hold and voltage reference
• Power dissipation: 465 mW at 5 MSPS; 230 mW at
2.5 MSPS
• +5 V analog supply and +3.3 to +5.25 V digital output
supply
• 44-lead LQFP plastic package.
APPLICATIONS
• Data acquisition systems
• IR imaging
• Scanners and digital copiers
• High-end CCD cameras
• Medical imaging
• Wireless communications
• Lab and test equipment
• Automatic test equipment
GENERAL DESCRIPTION
The SPT8100 is a high performance, 16-bit analog-to-digital
converter that operates at a sample rate of up to 5 MSPS.
Excellent dynamic performance and high linearity is
achieved by a digitally calibrated pipelined architecture fab-
ricated in CMOS process technology.
A low-noise programmable gain amplifier (PGA) is also in-
corporated on chip. The PGA is digitally programmable in
seven selected settings over a 0 to +20 dB range. The
SPT8100 also features an on-chip internal sample-and-hold
and internal reference for minimal external circuitry.
It operates from a single +5 V supply. Total power dissipa-
tion, including internal reference, is 465 mW. A separate
digital output supply pin is provided for +3.3 V or 5 V logic
output levels. The SPT8100 is available in a 44-lead LQFP
package over the industrial temperature range of –40 °C to
+85 °C.
BLOCK DIAGRAM
AVDD
+5V
DVDD
+5V
OVDD
+3/5 V
VIN+
VIN–
VCM
GS2 – GS0
(Gain Set)
Low-Noise
PGA
OE (Output Enable)
OVR (Over-Range)
16-bit, 5 MSPS ADC
16-bits
D15 – D0
(Data Outputs)
VREF
RS (Reset)
RDY (Ready)
AGND DGND OGND BIASC
(Ext Bias
Capacitor)
BIASR
(Ext Bias
Resistor)
VRT VRB
CLK
Signal Processing Technologies, Inc.
4755 Forge Road, Colorado Springs, Colorado 80907, USA
Phone: (719) 528-2300 FAX: (719) 528-2370 Website: http://www.spt.com E-Mail: sales@spt.com
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