MAX1034 Datasheet, PDF (1/31 Pages) Maxim Integrated Products – 8-/4-Channel, ±VREF Multirange Inputs, Serial 14-Bit ADCs

19-3574; Rev 0; 5/05
8-/4-Channel, ±V_REF Multirange Inputs,
Serial 14-Bit ADCs
General Description
The MAX1034/MAX1035 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 MAX1034 provides eight (single-ended) or four (true
differential) analog input channels. The MAX1035 pro-
vides four (single-ended) or two (true differential) analog
input channels. Each analog input channel is indepen-
dently software programmable for seven single-ended
input ranges (0 to +V_REF/2, -V_REF/2 to 0, 0 to +V_REF,
-V_REF to 0, ±V_REF/4, ±V_REF/2, and ±V_REF), and three
differential input ranges (±V_REF/2, ±V_REF, ±2 x V_REF).
An on-chip +4.096V reference offers a small convenient
ADC solution. The MAX1034/MAX1035 also accept an
external reference voltage between 3.800V and 4.136V.
The MAX1034 is available in a 24-pin TSSOP package
and the MAX1035 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 a 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 +V_REF/2, -V_REF/2 to 0, 0 to +V_REF, -V_REF to
0, ±V_REF/4, ±V_REF/2, and ±V_REF
♦ Differential Input Ranges
±V_REF/2, ±V_REF, and ±2 x V_REF
♦ Eight Single-Ended or Four Differential Analog
Inputs (MAX1034)
♦ Four Single-Ended or Two Differential Analog
Inputs (MAX1035)
♦ ±6V 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
MAX1034EUG* -40°C to +85°C 24 TSSOP
8
MAX1035EUP -40°C to +85°C 20 TSSOP
4
*Future product—contact factory for availability.
Pin Configurations
TOP VIEW
AV_DD1 1
CH0 2
CH1 3
CH2 4
CH3 5
CH4 6
CH5 7
CH6 8
CH7 9
CS 10
DIN 11
SSTRB 12
MAX1034
24 AGND1
23 AGND2
22 AV_DD2
21 AGND3
20 REF
19 REFCAP
18 DV_DD
17 DV_DDO
16 DGND
15 DGNDO
14 DOUT
13 SCLK
TSSOP
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
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