5962-8757104YA Analog Devices Inc, 5962-8757104YA Datasheet - Page 12

• Manufacturer Part Number: 5962-8757104YA
• Manufacturer: Analog Devices Inc

Specifications of 5962-8757104YA

• Temperature Sensor Function: Temp Sensor
• Output Type: Analog
• Operating Temperature (max): 150C
• Operating Temperature Classification: Military
• Operating Supply Voltage (min): 4V
• Operating Supply Voltage (typ): 5/9/12/15/18/24V
• Operating Supply Voltage (max): 30V
• Lead Free Status / RoHS Status: Not Compliant

AD590
CMOS analog multiplexers can also be used to switch AD590
current. Due to the AD590’s current mode, the resistance of
such switches is unimportant as long as 4 V is maintained
across the transducer. Figure 24 shows a circuit that combines
the principle demonstrated in Figure 23 with an 8-channel
CMOS multiplexer. The resulting circuit can select 1 to 80
sensors over only 18 wires with a 7-bit binary word.
SELECT
COLUMN
SELECT
ROW
AD581
INHIBIT
+
–
+15V
V
11
12
13
10
OUT
9
10
11
6
DECODER
DECIMAL
35.7kΩ
35.7kΩ
BCD-TO-
CMOS
INTERFACE
4028
10V
10V
AD590L
16
16
8
LEVEL
LOGIC
7
2kΩ
2kΩ
8
–5V TO –15V
14
3
2
+
–
Figure 25. 8-Channel Multiplexer
Figure 24. Matrix Multiplexer
0
1
2
+
–
+15V
–15V
AD590L
Rev. E | Page 12 of 16
BINARY TO 1-OF-8 DECODER
S1
S2
S8
+
–
5kΩ
5kΩ
22
AD7501
+
–
97.6kΩ
97.6kΩ
TTL/DTL TO CMOS
12
+
–
INTERFACE
EN
02
The inhibit input on the multiplexer turns all sensors off for
minimum dissipation while idling.
Figure 25 demonstrates a method of multiplexing the AD590 in
the 2-trim mode (see Figure 12 and Figure 13). Additional AD590s
and their associated resistors can be added to multiplex up to
eight channels of ±0.5°C absolute accuracy over the temperature
range of −55°C to +125°C. The high temperature restriction of
125°C is due to the output range of the op amps; output to 150°C
can be achieved by using a 20 V supply for the op amp.
DECODER/
+
–
DRIVER
CHANNEL
SELECT
BINARY
21
2
15
+
–
1
14
11
+
–
0
13
01
27kΩ
+
–
10kΩ
AD707A
20
–15V
+
–
4051 CMOS ANALOG
MULTIPLEXER
V+
10mV/°C
10
+
–
00
AD590
10mV/°C