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TC826 Datasheet PDF : 12 Pages
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A/D CONVERTER WITH
BAR GRAPH DISPLAY OUTPUT
TC826
ABSOLUTE MAXIMUM RATINGS*
Supply Voltage (V+ to V–) ............................................ 15V
Analog Input Voltage (either input)(1) ................... V+ to V–
Power Dissipation (TA ≤ 70°C)
64-Pin Flat Package .........................................1.14W
Operating Temperature
‘C’ Devices ............................................. 0°C to +70°C
Storage Temperature ............................ – 65°C to +150°C
Lead Temperature (Soldering, 10 sec) ................. +300°C
*Static-sensitive device. Unused devices must be stored in conductive
material. Protect devices from static discharge and static fields. Stresses
above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. These are stress ratings only and functional
operation of the device at these or any other conditions above those
indicated in the operational sections of the specifications is not implied.
Exposure to Absolute Maximum Rating Conditions for extended periods
may affect device reliability.
ELECTRICAL CHARACTERISTICS: unless otherwise stated VS = 9V; ROSC = 430 kΩ; TA = 25°C; Full–Scale = 20 mV.
No. Symbol
Parameter
Test Conditions
Min
Typ
Max
Unit
1
—
2
—
3
NL
Zero Input
Zero Reading Drift
Linearity Error
VIN = 0.0V
VIN = 0.0V
0°C ≤ TA ≤ +70°C
Max Deviation From
Best Straight Line
–0
±0
+0
Display
—
0.2
1
µV/°C
–1
0.5
+1
Count
4
R/O
Rollover Error
–VIN = +VIN
–1
0
+1
Count
5
EN
Noise
VIN = 0V
—
60
—
µVP–P
6
ILK
Input Leakage Current
VIN = 0V
—
10
20
pA
7
CMRR
Common–Mode
VCM = ±1V
—
50
—
µV/V
Rejection Ratio
VIN = 0V
8
—
Scale Factor
0 ≤ TA ≤ +70°C
—
1
—
ppm/°C
Temperature Coefficient
External Ref. Temperature
Coefficient = 0 ppm/°C
9
VCTC
10
VCOM
Analog Common
Temperature Coefficient
Analog Common
Voltage
250kΩ Between
Common and V+
0°C ≤ TA ≤ +70°C
250kΩ Between
Common and VDD
—
35
100
ppm/°C
2.7
2.9
3.35
V
11 VSD
LCD Segment
Drive Voltage
4
5
6
VP–P
12 VBD
LCD Backplane
Drive Voltage
4
5
6
VP–P
13
IDD
Power Supply Current
—
125
175
µA
NOTES: 1. Input voltages may exceed the supply voltages when
the input current is limited to 100µA.
2. Static sensitive device. Unused devices should be
stored in conductive material to protect devices from
static discharge and static fields.
3. Backplane drive is in phase with segment drive for ‘off’ segment and 180°C out of phase for ‘on’ segment. Frequency is 10 times
conversion rate.
4. Logic input pins 58, 59, and 60 should be connected through 1MΩ series resistors to VSS for logic 0.
3-172
TELCOM SEMICONDUCTOR, INC.
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