MAX1332 Datasheet, PDF (1/25 Pages) Maxim Integrated Products – 3Msps/2Msps, 5V/3V, 2-Channel, True-Differential 12-Bit ADCs

19-3712; Rev 0; 5/05
3Msps/2Msps, 5V/3V, 2-Channel, True-
Differential 12-Bit ADCs
General Description
The MAX1332/MAX1333 2-channel, serial-output,
12-bit, analog-to-digital converters (ADCs) feature two
true-differential analog inputs and offer outstanding noise
immunity and dynamic performance. Both devices easily
interface with SPI™/QSPI™/MICROWIRE™ and standard
digital signal processors (DSPs).
The MAX1332 operates from a single supply of +4.75V
to +5.25V with sampling rates up to 3Msps. The
MAX1333 operates from a single supply of +2.7V to
+3.6V with sampling rates up to 2Msps. These devices
feature a partial power-down mode and a full power-
down mode that reduce the supply current to 3.3mA
and 0.2µA, respectively. Also featured is a separate
power supply input (DV_DD) that allows direct interfacing
to +2.7V to +3.6V digital logic. The fast conversion
speed, low power dissipation, excellent AC perfor-
mance, and DC accuracy (±0.6 LSB INL) make the
MAX1332/MAX1333 ideal for industrial process control,
motor control, and base-station applications.
The MAX1332/MAX1333 are available in a space-sav-
ing (3mm x 3mm), 16-pin, TQFN package and operate
over the extended (-40°C to +85°C) temperature range.
Applications
Data Acquisition
Bill Validation
Motor Control
Base Stations
High-Speed Modems
Optical Sensors
Industrial Process Control
Features
♦ 3Msps Sampling Rate (+5V, MAX1332)
♦ 2Msps Sampling Rate (+3V, MAX1333)
♦ Separate Logic Supply: +2.7V to +3.6V
♦ Two True-Differential Analog Input Channels
♦ Bipolar/Unipolar Selection Input
♦ Only 38mW (typ) Power Consumption
♦ Only 2µA (max) Shutdown Current
♦ High-Speed, SPI-Compatible, 3-Wire Serial
Interface
♦ 2MHz Full-Linear Bandwidth
♦ 71.4dB SINAD and -93dB THD at 525kHz Input
Frequency
♦ No Pipeline Delays
♦ Space-Saving (3mm x 3mm), 16-Pin, TQFN
Package
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX1332ETE* -40°C to +85°C 16 TQFN-EP** (3mm x 3mm)
MAX1333ETE -40°C to +85°C 16 TQFN-EP** (3mm x 3mm)
*Future product—contact factory for availability.
**EP = Exposed paddle.
Selector Guide and Pin Configuration appear at end of data
sheet.
Typical Operating Circuit
+4.75V TO +5.25V
1µF
0.1µF
+
DIFFERENTIAL ^-
INPUTS ₊
REF INPUT
VOLTAGE
1µF
-
0.1µF
+2.7V TO +3.6V
AV_DD
AIN1P
AIN1N
DV_DD
SHDN
BIP/UNI
AIN0P MAX1332 _CHSEL
AIN0N
CNVST
REF
AGND
SCLK
DOUT
AGND DGND
0.1µF
1µF
µC/DSP
SPI/QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.