MAX1098-MAX1099 Datasheet, PDF (1/20 Pages) Maxim Integrated Products – 10-Bit Serial-Output Temperature Sensors with 5-Channel ADC

19-1728; Rev 0; 7/00
10-Bit Serial-Output Temperature Sensors
with 5-Channel ADC
General Description
The MAX1098/MAX1099 implement both local and
remote temperature sensing with 10-bit resolution,
using +5V and +3V supply voltages, respectively.
Accuracy is ±1°C from 0°C to +70°C, with no calibra-
tion needed. The devices feature an algorithmic
switched-capacitor analog-to-digital converter (ADC),
on-chip clock, and 3-wire serial interface compatible
with SPI™, QSPI™, and MICROWIRE™.
The MAX1098/MAX1099 also perform fully differential
voltage measurements with 10-bit resolution and sepa-
rate track-and-hold (T/N) for positive and negative
inputs. Both devices accept versatile input modes con-
sisting of two 3-channel signal pairs, five 1-channel sig-
nals relative to a floating common, or V_DD/4 relative to
ground. An external reference may be used for more
accurate voltage measurements.
Typical power consumption is only 1.3mW (MAX1099).
A shutdown mode and two standby modes provide
multiple strategies for prolonging battery life in portable
applications that require limited sampling throughput.
The MAX1098/MAX1099 are available in 16-pin SSOP
packages.
Applications
Temperature/Voltage Supervision of
Workstations and Communications Equipment
Hand-Held Instruments
Medical Equipment
Industrial Process Control
Pin Configuration
TOP VIEW
AIN1 1
SHO 2
AIN2 3
AIN3 4
AIN4 5
GND 6
SSTRB 7
CS 8
MAX1098
MAX1099
16 AIN0
15 AIN5
14 REF
13 GND
12 V_DD
11 SCLK
10 DIN
9 COUT
Features
o Local and Remote Temperature Sensing
o 12-Bit Resolution for Temperature and
10-Bit Resolution for Voltage Inputs
o ±1°C Accuracy from -40°C to +85°C
o Fully Differential Inputs
o Single-Supply Operation
+4.75V to +5.25V (MAX1098)
+2.7V to +3.6V (MAX1099)
o 3-Wire SPI/QSPI/MICROWIRE-Compatible
Interface
o Internal Precision Voltage Reference
2.50V (MAX1098)
1.20V (MAX1099)
o Space-Saving 16-Pin SSOP Package
Ordering Information
PART
TEMP.
RANGE
PIN-
PACKAGE
TEMP. SENSE
ACCURACY
(°C)
MAX1098AEAE* -40°C to +85°C
MAX1098BEAE* -40°C to +85°C
MAX1098CEAE -40°C to +85°C
MAX1099AEAE* -40°C to +85°C
MAX1099BEAE* -40°C to +85°C
MAX1099CEAE -40°C to +85°C
16 SSOP
16 SSOP
16 SSOP
16 SSOP
16 SSOP
16 SSOP
±0.75
±1.0
±4.0
±0.75
±1.0
±4.0
*Future product—contact factory for availability.
Temperature Error
MAX1098
TEMPERATURE ERROR
vs. INTERNAL DIODE TEMPERATURE
1.0
0.5
0
SSOP
-0.5
Typical Operating Circuit appears at end of data sheet.
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
-1.0
-60 -40 -20 0 20 40 60
TEMPERATURE (°C)
80 100
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