
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 1A (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 (0V to +VREF/2, -VREF/2 to 0V, 0V to +VREF,
-VREF to 0V, ±VREF/4, ±VREF/2, and ±VREF), and three
differential input ranges (±VREF/2, ±VREF, ±2 x VREF).
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
Features
o Software-Programmable Input Range for Each
Channel
o Single-Ended Input Ranges
0V to +VREF/2, -VREF/2 to 0V, 0V to +VREF,
-VREF to 0V, ±VREF/4, ±VREF/2, and ±VREF
o Differential Input Ranges
±VREF/2, ±VREF, and ±2 x VREF
o Eight Single-Ended or Four Differential Analog
Inputs (MAX1034)
o Four Single-Ended or Two Differential Analog
Inputs (MAX1035)
o ±6V Overvoltage Tolerant Inputs
o Internal or External Reference
o 115ksps Maximum Sample Rate
o Single +5V Power Supply
o 20-/24-Pin TSSOP Package
MAX1034/MAX1035
8-/4-Channel, ±VREF Multirange Inputs,
Serial 14-Bit ADCs
________________________________________________________________
Maxim Integrated Products
1
Pin Configurations
Ordering Information
24
23
22
21
20
19
18
17
1
2
3
4
5
6
7
8
AGND1
AGND2
AVDD2
AGND3
CH2
CH1
CH0
AVDD1
TOP VIEW
REF
REFCAP
DVDD
DVDDO
CH6
CH5
CH4
CH3
16
15
14
13
9
10
11
12
DGND
DGNDO
DOUT
SCLK
SSTRB
DIN
CS
CH7
TSSOP
MAX1034
+
19-3574; Rev 2; 3/12
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
PART
PIN-PACKAGE
CHANNELS
MAX1034EUG+
24 TSSOP
8
MAX1035EUP+
20 TSSOP
4
QSPI is a trademark of Motorola, Inc.
MICROWIRE is a registered trademark of National
Semiconductor Corp.
Pin Configurations continued at end of data sheet.
Note: All devices are specified over the -40°C to +85°C opera-
ting temperature range.
+
Denotes a lead(Pb)-free/RoHS-compliant package.