XRD66L92
Low Voltage CMOS 12-Bit
High Speed Analog-to-Digital Converter
...the analog plus companyTM
with Serial Logic Interface Port
FEATURES
• 3.3 V Operation
• 12-Bit ADC with DNL = +1 LSB, INL = +2.5 LSB
• Sampling Frequency 1 MHz (typ)
• Rail-to-Rail Input Range
• VREF Range: 1.5 V to VDD
• CMOS Low Power: 25 mW (typ)
• Spaced Ladder Taps for Non-Linear Transfer
Function Creation
• Binary and Two’s Complement Digital Output Mode
• Serial Port
• Underflow and Overflow Flags
• Precision Aperture Output
• Latch-Up Proof
• ESD: 2000 V Minimum
APPLICATIONS
April 1996-1
• Battery Operated Instrumentation
• DAS
• Digital Camera
• Digital Oscilloscopes
• Spectrum Analysis
• Digital Radio
GENERAL DESCRIPTION
The XRD66L92 is a 12-bit 2-step high speed
Analog-to-Digital Converter with DNL = +1 LSB and INL = +2.5
LSB. The XRD66L92 contains an internal track and hold which
allows for analog input signals as fast as 5 MHz and can convert
signals at a 1 MSPS rate.
The XRD66L92 operates with a single supply at +3.3 V.
Separate pins for reference ladder terminals and power supplies
allow flexibility for various AIN, DVREF, and power supply ranges.
Data is presented at the serial output port every clock cycle
with a 2.5 cycle pipeline delay. LINV and MINV enable binary
and 2’s complement data formatting. Through the 6 ladder tap
pins, transfer function adjustment, and linearity can be
accommodated.
ORDERING INFORMATION
Package
Type
SOIC
PDIP
Temperature
Range
Part No.
–40 to +85°C
–40 to +85°C
XRD66L92AID
XRD66L92AIP
DNL
(LSB)
1
1
INL
(LSB)
2.5
2.5
Rev. 1.00
E1996
EXAR Corporation, 48720 Kato Road, Fremont, CA 94538 z (510) 668-7000 z FAX (510) 668-7017