TC7136ACLW Microchip Technology, TC7136ACLW Datasheet - Page 8

• Manufacturer Part Number: TC7136ACLW
• Description: IC ADC 3 1/2DGT LOW PWR 44-PLCC
• Manufacturer: Microchip Technology

Specifications of TC7136ACLW

• Display Type: LCD
• Configuration: 7 Segment
• Digits Or Characters: A/D 3.5 Digits
• Current - Supply: 70µA
• Voltage - Supply: 9V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 44-PLCC
• Lead Free Status / RoHS Status: Request inventory verification / Request inventory verification
• Interface: -

TC7136/TC7136A
DS21461C-page 8
TABLE 2-1:
(40-Pin PDIP)
Pin Number
Normal
34
35
36
37
38
39
(Reverse)
PIN DESCRIPTION (CONTINUED)
(7)
(6)
(5)
(4)
(3)
(2)
(1)
Symbol
C
V
OSC3
OSC2
OSC1
V
TEST
REF
REF
REF
+
+
-
Description
A 0.1μF capacitor is used in most applications. If a large Common mode voltage
exists (for example, the V
used, a 1μF capacitor is recommended, which will hold the rollover error to
0.5 count.
See Pin 36.
The analog input required to generate a full scale output (1999 counts). Place
100mV between Pins 35 and 36 for 199.9mV full scale. Place 1V between Pins 35
and 36 for 2V full scale. See Section 6.6, Reference Voltage.
Lamp test. When pulled HIGH (to V+), all segments will be turned ON and the
display should read -1888. It may also be used as a negative supply for externally
generated decimal points. See Section 7.4, Test for additional information.
See Pin 40.
See Pin 40.
Pins 40, 39 and 38 make up the oscillator section. For a 48kHz clock
(3 readings per second), connect Pin 40 to the junction of a 180kΩ resistor and a
50pF capacitor. The 180kΩ resistor is tied to Pin 39 and the 50pF capacitor is tied
to Pin 38.
IN
- pin is not at analog common) and a 200mV scale is
© 2005 Microchip Technology Inc.