SPT8000 Datasheet, PDF (1/11 Pages) Fairchild Semiconductor – 14-BIT, 20 MSPS, CMOS A/D CONVERTER

SPT8000
14-BIT, 20 MSPS, CMOS A/D CONVERTER
FEATURES
PRELIMINARY INFORMATION
APPLICATIONS
OCTOBER 12, 2001
• 14-bit, 20 MSPS CMOS analog-to-digital converter
• Excellent performance:
DLE: ±0.5 LSB, ILE: ±1.2 LSB
12.1 Effective Number of Bits @ ƒ_IN = 5 MHz
SFDR = 87 dB @ ƒ_IN = 5 MHz
• Internal sample-and-hold and voltage reference
• Power dissipation: 725 mW at 20 MSPS
• +5 V analog supply and +3.3/5 V digital output supply
• Out-of-range indicator
• 44-lead TQFP plastic package
• –40 °C to +85 °C temperature range
• Wireless communications
• IR imaging
• Scanners and digital copiers
• High-end CCD cameras
• Medical imaging
• Automatic test equipment
• Data acquisition systems
• Lab and test equipment
DESCRIPTION
This high-performance, 14-bit analog-to-digital converter
operates at a sample rate of up to 20 MSPS. It utilizes a
digitally calibrated, pipelined CMOS architecture to
achieve excellent dynamic performance and linearity.
Incorporated on chip are a high-performance sample-and-
hold amplifier and internal reference for minimal external
circuitry.
The excellent linearity and superb dynamic performance
of this device make it ideal for image processing and in-
strumentation applications, as well as communications
applications.
The device operates from a single +5 V supply. A separate
digital output supply pin is provided for +3/5 V logic output
levels. Total power dissipation, including internal refer-
ence, is 725 mW. It is in a 44-lead TQFP package over the
industrial temperature range of –40 °C to +85 °C.
BLOCK DIAGRAM
AV_DD
OV_DD
V_IN+
V_IN–
SHA
ADC1
MDAC1
ADC2
MDAC2
CLK
V_RT
CM
V_RC
V_BS
MDAC3
ADC3
Reference
&
Buffers
Bias
Generator
Bandgap
V_REF/EXTB
ADC4
MDAC4
ADC5
AGND
BGND
OGND
CAL
BUSY
RESETB
14
D13–D0 (D0=LSB)
OTR