Rainbow Electronics MAX1303 - Manual

General Description
The MAX1302/MAX1303 multirange, low-power, 16-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 MAX1302 provides eight (single-ended) or four
(true differential) analog input channels. The MAX1303
provides four (single-ended) or two (true differential)
analog input channels. Each analog input channel is
independently 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 MAX1302/MAX1303 also accept an
external reference voltage between 3.800V and 4.136V.
The MAX1302 is available in a 24-pin TSSOP package
and the MAX1303 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
♦ 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 (MAX1302)
♦ Four Single-Ended or Two Differential Analog
Inputs (MAX1303)
♦ ±6V Overvoltage Tolerant Inputs
♦ Internal or External Reference
♦ 115ksps Maximum Sample Rate
♦ Single +5V Power Supply
♦ 20-/24-Pin TSSOP Package
MAX1302/MAX1303
8-/4-Channel, ±V
REF
Multirange Inputs,
Serial 16-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
AV DD2
AGND3 CH2
CH1
CH0
AV DD1
TOP VIEW
REF
REFCAP
DV DD
DV DDO CH6
CH5
CH4
CH3
16
15
14
13
9
10
11
12
DGND
DGNDO
DOUT
SCLK SSTRB
DIN
CS
CH7
TSSOP
MAX1302
19-3576; Rev 1; 12/06
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.
PART
PIN-
PACKAGE
C H A N N EL S PKG CODE
MAX1302AEUG* 24 TSSOP 8 U24-1
MAX1302BEUG* 24 TSSOP 8 U24-1
MAX1303AEUP* 20 TSSOP 4 U20-2
MAX1303BEUP 20 TSSOP 4 U20-2
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
Pin Configurations continued at end of data sheet.
*Future product—contact factory for availability.
Note: All devices are specified over the -40°C to +85°C oper-
ating temperature range.