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参数资料
| 型号： | TC7126IPL |
| 厂商： | TelCom Semiconductor, Inc. |
| 英文描述： | 3-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTERS |
| 中文描述： | 3-1/2数字模拟数字转换器 |
| 文件页数： | 2/13页 |
| 文件大小： | 198K |
| 代理商： | TC7126IPL |
3-218
TELCOM SEMICONDUCTOR, INC.
3-1/2 DIGIT
ANALOG-TO-DIGITAL CONVERTERS
TC7126
TC7126A
ABSOLUTE MAXIMUM RATINGS*
Supply Voltage (V
+
to V
–
)......................................... +15V
Analog Input Voltage (Either Input) (Note 1) ........ V
+
to V
–
Reference Input Voltage (Either Input)................. V
+
to V
–
Clock Input ......................................................TEST to V
+
Operating Temperature Range
C Devices ..............................................0
°
C to +70
°
C
I Devices...........................................– 25
°
C to +85
°
C
Storage Temperature Range ................– 65
°
C to +150
°
C
Lead Temperature (Soldering, 10 sec) .................+300
°
C
Power Dissipation, (T
A
≤
70
°
C), (Note 2)
44-Pin PQFP ....................................................1.00W
44-Pin PLCC.....................................................1.23W
40-Pin Plastic PDIP ..........................................1.23W
*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
S
= +9V, f
CLK
= 16 kHz, and T
A
= +25
°
C, unless otherwise noted.
Symbol
Parameter
Test Conditions
Min
Typ
Max
Unit
Input
Zero Input Reading
V
IN
= 0V
Full Scale = 200 mV
V
IN
= 0V, 0
°
C
≤
T
A
≤
+70
°
C
V
IN
= V
REF
, V
REF
= 100 mV
–000.0
±
000.0
+000.0
Digital
Reading
μ
V/
°
C
Digital
Reading
Count
Zero Reading Drift
Ratiometric Reading
—
999
0.2
1
999/1000
1000
NL
Linearity Error
Full Scale = 200 mV or 2V
Max Deviation From Best Fit
Straight Line
–V
IN
= +V
IN
≈
200 mV
V
IN
= 0V, Full Scale = 200 mV
V
IN
= 0V
V
CM
=
±
1V, V
IN
= 0V,
Full Scale = 200 mV
V
IN
= 199 mV, 0
°
C
≤
T
A
≤
+70
°
C
Ext Ref Temp Coeff = 0 ppm/
°
C
– 1
±
0.2
1
Roll-Over Error
Noise
Input Leakage Current
Common-Mode Rejection
Ratio
Scale Factor Temperature
Coefficient
– 1
15
1
50
±
0.2
—
10
—
1 Count
μ
V
P-P
pA
μ
V/V
e
N
I
L
CMRR
—
—
—
—
1
5
ppm/
°
C
Analog Common
V
CTC
Analog Common
Temperature Coefficient
250 k
Between Common and V
+
0
°
C
≤
T
A
≤
+70
°
C ("C" Devices):
TC7126
TC7126A
– 25
°
C
≤
T
A
≤
+85
°
C ("I" Device):
TC7126A
250 k
Between Common and V
+
—
—
—
—
—
—
80
35
—
—
—
75
—
—
ppm/
°
C
ppm/
°
C
—
2.7
35
3.05
100
3.35
ppm/
°
C
V
V
C
LCD Drive
V
SD
V
BD
Power Supply
I
S
NOTES:
1. Input voltage may exceed supply voltages when input current is limited to 100
μ
A.
2. Dissipation rating assumes device is mounted with all leads soldered to PC board.
3. Refer to "Differential Input" discussion.
4. Backplane drive is in-phase with segment drive for "OFF" segment and 180
°
out-of-phase for "ON" segment. Frequency is 20 times
conversion rate. Average DC component is less than 50 mV.
5. See "Typical Operating Circuit."
6. During auto-zero phase, current is 10–20
μ
A higher. A 48 kHz oscillator increases current by 8
μ
A (typical). Common current not
included.
Analog Common Voltage
LCD Segment Drive Voltage
LCD Backplane Drive Voltage
V
+
to V
–
= 9V
V
+
to V
–
= 9V
4
4
5
5
6
6
V
P-P
V
P-P
Power Supply Current
V
IN
= 0V, V
+
to V
–
= 9V (Note 6)
—
55
100
μ
A
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