MAX6691_07 MAXIM [Maxim Integrated Products], MAX6691_07 Datasheet - Page 3

• Manufacturer Part Number: MAX6691_07
• Description: Four-Channel Thermistor Temperature-to-Pulse-Width Converter
• Manufacturer: MAXIM [Maxim Integrated Products]

(V
__________________________________________Typical Operating Characteristics
Four-Channel Thermistor Temperature-to-Pulse-
CC
4.5
4.0
3.5
3.0
2.5
PIN
= 5V, R
10
1
2
3
4
5
6
7
8
9
3.0
SLEEP-MODE SUPPLY CURRENT
EXT
3.5
vs. SUPPLY VOLTAGE
= 7.5k , R
SUPPLY VOLTAGE (V)
NAME
GND
N.C.
V
R+
I/O
T1
T2
T3
T4
R-
4.0
CC
_______________________________________________________________________________________
4.5
TH
Thermistor 1. Connect to external thermistor 1.
Thermistor 2. Connect to external thermistor 2.
Thermistor 3. Connect to external thermistor 3.
Thermistor 4. Connect to external thermistor 4.
External Resistor Low Side. Connect R
Reference Voltage Output. Connect R
Ground. Ground connection for MAX6691 and ground return for external thermistor(s).
No Connection. Do not make a connection to this pin.
I/O Connection to Microcontroller. Connect a 10k
Supply Voltage. Bypass V
= 12.5k , T
5.0
5.5
A
= +25°C, unless otherwise noted.)
-0.5
-1.0
1.0
0.5
0
0
vs. POWER-SUPPLY NOISE FREQUENCY
V
APPLIED TO V
NO VCC BYPASS
CAPACITOR
V
IN
IN
POWER-SUPPLY NOISE FREQUENCY (MHz)
= SQUARE WAVE
= 250mV
CC
5
to GND with a capacitor of at least 0.1µF.
V
CC
T
P-P
HIGH
CC
= 5.0V V
WITH
10
/T
LOW
EXT
EXT
CC
ERROR
= 3.3V
15
between R- and R+.
between R- and R+.
FUNCTION
20
pullup resistor from I/O pin to V
25
Width Converter
-0.5
-1.0
1.0
0.5
0
0
vs. POWER-SUPPLY NOISE FREQUENCY
V
APPLIED TO V
NO VCC BYPASS
CAPACITOR
V
IN
IN
POWER-SUPPLY NOISE FREQUENCY (MHz)
T
= SQUARE WAVE
= 250mV
A
= +85 C
5
Pin Description
T
P-P
HIGH
CC
T
WITH
A
10
/T
= +25 C
LOW
CC
T
A
.
= +125 C
ERROR
15
T
A
= -55 C
20
25
3