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Maxim Integrated Semiconductor Electronic Components Datasheet


MAX1032

(MAX1032 / MAX1033) Serial 14-Bit ADCs



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19-3573; Rev 1; 8/06
8-/4-Channel, ±12V Multirange Inputs,
Serial 14-Bit ADCs
General Description
The MAX1032/MAX1033 multirange, low-power, 14-bit,
successive-approximation, analog-to-digital converters
(ADCs) operate from a single +5V supply and achieve
throughput rates up to 115ksps. A separate digital sup-
ply allows digital interfacing with 2.7V to 5.25V systems
using the SPI™-/QSPI™-/MICROWIRE™-compatible
serial interface. Partial power-down mode reduces the
supply current to 1.3mA (typ). Full power-down mode
reduces the power-supply current to 1µA (typ).
The MAX1032 provides eight (single-ended) or four
(true differential) analog input channels. The MAX1033
provides four (single-ended) or two (true differential)
analog input channels. Each analog input channel is
independently software programmable for seven sin-
gle-ended input ranges (0 to +6V, -6V to 0, 0 to +12V,
-12V to 0, ±3V, ±6V, and ±12V), and three differential
input ranges (±6V, ±12V, ±24V).
An on-chip +4.096V reference offers a small convenient
ADC solution. The MAX1032/MAX1033 also accept an
external reference voltage between 3.800V and 4.136V.
The MAX1032 is available in a 24-pin TSSOP package
and the MAX1033 is available in a 20-pin TSSOP pack-
age. Each device is specified for operation from -40°C
to +85°C.
Applications
Industrial Control Systems
Data-Acquisition Systems
Avionics
Robotics
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
Features
Software-Programmable Input Range for Each
Channel
Single-Ended Input Ranges
0 to +6V, -6V to 0, 0 to +12V, -12V to 0, ±3V,
±6V, and ±12V
Differential Input Ranges
±6V, ±12V, and ±24V
Eight Single-Ended or Four Differential Analog
Inputs (MAX1032)
Four Single-Ended or Two Differential Analog
Inputs (MAX1033)
±16.5V Overvoltage Tolerant Inputs
Internal or External Reference
115ksps Maximum Sample Rate
Single +5V Power Supply
20-/24-Pin TSSOP Package
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
CHANNELS
MAX1032EUG* -40°C to +85°C 24 TSSOP
8
MAX1033EUP -40°C to +85°C 20 TSSOP
*Future product—contact factory for availability.
4
Pin Configurations
TOP VIEW
AVDD1 1
CH0 2
CH1 3
CH2 4
CH3 5
CH4 6
CH5 7
CH6 8
CH7 9
CS 10
DIN 11
SSTRB 12
MAX1032
24 AGND1
23 AGND2
22 AVDD2
21 AGND3
20 REF
19 REFCAP
18 DVDD
17 DVDDO
16 DGND
15 DGNDO
14 DOUT
13 SCLK
TSSOP
Pin Configurations continued at end of data sheet.
________________________________________________________________ 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.
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8-/4-Channel, ±12V Multirange Inputs,
Serial 14-Bit ADCs
ABSOLUTE MAXIMUM RATINGS
AVDD1 to AGND1 ....................................................-0.3V to +6V
AVDD2 to AGND2 ....................................................-0.3V to +6V
DVDD to DGND ........................................................-0.3V to +6V
DVDDO to DGNDO ..................................................-0.3V to +6V
DVDD to DVDDO......................................................-0.3V to +6V
DVDD, DVDDO to AVDD1 ........................................-0.3V to +6V
AVDD1, DVDD, DVDDO to AVDD2 ..........................-0.3V to +6V
DGND, DGNDO, AGND3, AGND2 to AGND1 ......-0.3V to +0.3V
CS, SCLK, DIN, DOUT, SSTRB to
DGNDO ............................................-0.3V to (DVDDO + 0.3V)
CH0–CH7 to AGND1 .........................................-16.5V to +16.5V
REF, REFCAP to AGND1.......................-0.3V to (AVDD1 + 0.3V)
Continuous Current (any pin) ...........................................±50mA
Continuous Power Dissipation (TA = +70°C)
20-Pin TSSOP (derate 11mW/°C above +70°C) ..........879mW
24-Pin TSSOP (derate 12.2mW/°C above +70°C) .......976mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature .....................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(AVDD1 = AVDD2 = DVDD = DVDDO = 5V, AGND1 = DGND = DGNDO = AGND2 = AGND3 = 0, fCLK = 3.5MHz (50% duty cycle),
external clock mode, VREF = 4.096V (external reference operation), REFCAP = AVDD1, maximum single-ended bipolar input range
(±12V), CDOUT = 50pF, CSSTRB = 50pF, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
DC ACCURACY (Notes 1, 2)
Resolution
Integral Nonlinearity
Differential Nonlinearity
Transition Noise
Offset Error
SYMBOL
CONDITIONS
INL
DNL
No missing codes
External or internal reference
Unipolar
Single-ended inputs
Bipolar
Differential inputs
(Note 3)
Unipolar
Bipolar
MIN TYP MAX UNITS
14 Bits
±0.25 ±1
LSB
±1 LSB
1 LSBRMS
0 ±20
-1.0 ±10
0 ±40
mV
-2.0 ±20
Channel-to-Channel Gain
Matching
Unipolar or bipolar
0.025
%FSR
Channel-to-Channel Offset Error
Matching
Unipolar or bipolar
1 mV
Offset Temperature Coefficient
Gain Error
Gain Temperature Coefficient
Unipolar Endpoint Overlap
Unipolar
Bipolar
Unipolar
Bipolar
Unipolar
Bipolar
Negative unipolar full scale to positive
unipolar zero-scale
10
ppm/°C
5
±0.5
±0.3
%FSR
1.5
ppm/°C
1.0
05
LSB
2 _______________________________________________________________________________________
DataSheet4 U .com



Part Number MAX1032
Description (MAX1032 / MAX1033) Serial 14-Bit ADCs
Maker Maxim Integrated Products - Maxim Integrated Products
Total Page 30 Pages
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