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| MAX1302 Datasheet, PDF (1/31 Pages) Maxim Integrated Products – 8-/4-Channel, VREF Multirange Inputs, Serial 16-Bit ADCs | |||
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19-3576; Rev 0; 5/05
8-/4-Channel, ±VREF Multirange Inputs,
Serial 16-Bit ADCs
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 SPIâ¢-/QSPIâ¢-/MICROWIREâ¢-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 +VREF/2, -VREF/2 to 0,
0 to +VREF, -VREF to 0, ±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 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
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 +VREF/2, -VREF/2 to 0, 0 to +VREF, -VREF
to 0, ±VREF/4, ±VREF/2, and ±VREF
⦠Differential Input Ranges
±VREF/2, ±VREF, and ±2 x VREF
⦠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
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
CHANNELS
MAX1302AEUG* -40°C to +85°C 24 TSSOP
8
MAX1302BEUG* -40°C to +85°C 24 TSSOP
8
MAX1303AEUP* -40°C to +85°C 20 TSSOP
4
MAX1303BEUP -40°C to +85°C 20 TSSOP
4
*Future productâcontact factory for availability.
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
MAX1302
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 Maximâs website at www.maxim-ic.com.
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