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