參數(shù)資料
型號： TC7129CLW
廠商： TelCom Semiconductor, Inc.
英文描述： 4-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTER WITH ON-CHIP LCD DRIVERS
中文描述： 4-1/2數(shù)字模擬到數(shù)字轉(zhuǎn)換器，帶有片上LCD驅(qū)動器
文件頁數(shù)： 2/15頁
文件大小： 214K
代理商： TC7129CLW
3-232
TELCOM SEMICONDUCTOR, INC.
ABSOLUTE MAXIMUM RATINGS*
Supply Voltage (V
+
to V
–
)............................................15V
Reference Voltage (REF HI or REF LO) .............. V
+
to V
–
Input Voltage (IN HI or IN LO) (Note 1)................ V
+
to V
–
V
DISP
................................................V
+
to (DGND – 0.3V)
Digital Input, Pins
1, 2, 19, 20, 21, 22, 27, 37, 39, 40.......... DGND to V
+
Analog Input, Pins 25, 29, 30 ............................... V
+
to V
–
Package Power Dissipation (T
A
≤
70
°
C)
Plastic DIP ........................................................1.23W
PLCC ................................................................1.23W
Plastic QFP.......................................................1.00W
Operating Temperature Range ....................0
°
C to +70
°
C
Notes:
Input voltages may exceed supply voltages, provided input current
is limited to
±
400
μ
A. Currents above this value may result in invalid display
readings but will not destroy the device if limited to
±
1 mA.
Dissipation ratings assume device is mounted with all leads soldered to
printed circuit board.
*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:
V
+
to V
–
= 9V, V
REF
= 1V, T
A
= +25
°
C, f
CLK
= 120 kHz, unless otherwise
indicated. Pin numbers refer to 40-pin DIP.
Symbol
Parameter
Test Conditions
Min
Typ
Max
Unit
Input
Zero Input Reading
Zero Reading Drift
Ratiometric Reading
Range Change Accuracy
V
IN
= 0V, 200 mV Scale
V
IN
= 0V, 0
°
C < T
A
< +70
°
C
V
IN
= V
REF
= 1000 mV, Range = 2V
V
IN
= 0.1V on Low Range
4
V
IN
= 1V on High Range
–V
IN
= +V
IN
= 199 mV
200 mV Scale
V
CM
= 1V, V
IN
= 0V, 200 mV Scale
V
IN
= 0V
200 mV Scale
V
IN
= 0V
200 mV Scale
V
IN
= 0V, Pins 32, 33
V
IN
= 199 mV, 0
°
C < T
A
< +70
°
C
External V
REF
= 0 ppm/
°
C
– 0000
—
9997
0.9999
0000
±
0.5
9999
1.0000
+0000
—
10000
1.0001 Ratio
Counts
μ
V/
°
C
Counts
RE
NL
CMRR
CMVR
Roll-Over Error
Linearity Error
Common-Mode Rejection Ratio
Common-Mode Voltage Range
—
—
—
—
—
—
1
1
2
—
—
—
—
—
Counts
Counts
dB
V
V
μ
V
P-P
110
(V
–
) +1.5
(V
+
) –1
14
e
N
Noise (Peak-to-Peak Value Not
Exceeded 95% of Time)
Input Leakage Current
Scale Factor Temperature
Coefficient
I
IN
—
—
1
2
10
7
pA
ppm/
°
C
Power
V
COM
Common Voltage
Common Sink Current
Common Source Current
Digital Ground Voltage
Sink Current
Supply Voltage Range
Supply Current Excluding Common Current
Clock Frequency
V
DISP
Resistance
Low-Battery Flag Activation Voltage
V
+
to Pin 28
Common = +0.1V
Common = –0.1V
V
+
to Pin 36, V
+
to V
–
= 9V
DGND = +0.5V
V
+
to V
–
V
+
to V
–
= 9V
2.8
—
—
4.5
—
6
—
—
—
6.3
3.2
0.6
10
5.3
1.2
9
0.8
120
50
7.2
3.5
—
—
5.8
—
12
1.3
360
—
7.7
V
mA
μ
A
V
mA
V
mA
kHz
k
V
DGND
I
S
f
CLK
V
DISP
to V
+
V
+
to V
–
Digital
Continuity Comparator
Threshold Voltages
Pull-Down Current
V
OUT
Pin 27 = High
V
OUT
Pin 27 = Low
Pins 37, 38, 39
100
—
—
200
200
2
—
400
10
mV
mV
μ
A
Storage Temperature Range ................– 65
°
C to +150
°
C
Lead Temperature (Soldering, 10 sec) .................+300
°
C
TC7129
4-1/2 DIGIT ANALOG-TO-DIGITAL
CONVERTER WITH ON-CHIP LCD DRIVERS
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