WS7106 Datasheet, PDF (2/14 Pages) Wing Shing Computer Components – 3 1/2 Digit LCD/LED Display A/D Converters

WS7106/WS710
7
Absolute Maximum Ratings
Thermal Information
Supply Voltage
Thermal Resistance (typical, Note 2)
θ_JA(℃/W)
WS7106, V+ to V-…………………………….15v
WS7107, V+ to GND…………………….……6V
WS7107, V_ to GND……………………. ….-9V
Analog Input Voltage (Either Input) (Note 1)V+ to V-
Reference Input Voltage (Either Input)V+ to V-
Clock Input
WS7106TEST to V+
WS7107GND to V+
PDIP Package……………………………………………. …… ………… 50
Maximum Junction Temperature…………………………………….. ………150℃
Maximum Storage Temperature Range………………….………..-65℃ to 150℃
Operating Conditions
Temperature Range…………………………0℃ to 70℃
CAUTION: Stresses above those listed in “absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation
Of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
Notes:
1. Input voltages may exceed the supply voltages provided the input current is limited to ±100µA
2. Θ_JA Is measured with the component mounted on an evaluation PC on board in fee air.
Electrical specifications (Note 3)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
SYSTEM PERFORMACE
Zero Input Reading
V_IN=0.0V, FULL Scale = 200mV
-000.0
Ratiometric Reading
V_IN = V_REF, V_REF = 100mV
999
Rollover Error
Linearity
-V_IN=+V_IN=200mV
Difference in Reading for Equal Positive and -1
Negative Inputs Near Full Scale
Full Scale = 200mV or Full Scale = 2V Maximum
Deviation from Best Straight Line Fit (note 6)
-1
Common Mode Rejection Ratio
V_CM = 1V, V_IN = 0V, Full Scale = 200mv(Note 6)
-
End Power Supply Character V+ Supply Current V_IN = 0 (Does Not Include LED Current for WS7107
-
End Power Supply Character V- Supply Current WS7107 Only
-
COMMON Pin Analog Common Voltage
25kΩ Between Common and Positive Supply (With
Respect to + Supply)
2.4
Noise (P_K-P_K Value not exceeded 95% of time) V_IN=0V Full Scale=200mV
Input Leakage Current
V_IN=0V
Analog COMMON Temperature Coefficient
25K between Common and V+ 0℃-70℃
±000.0
999/1000
0.2
0.2
50
0.5
0.5
3.0
15
1
60
+000.0
1000
Digital
Reading
Digital
Reading
+1 Counts
+1 Counts
-
μV/V
1.8
mA
1.8
mA
3.2
V
uV_P-P
10
pA
75 ppm/℃
Scale Factor Temperature Coefficient
Zero Reading Drift
DISPLAY DRIVER WS7106 ONLY
Peak-to-Peak Segment Drive Voltage
Peak-to-Peak Backplane Drive Voltage
V_IN=199mV 0℃-70℃Ext. ref. 0ppm/℃
V_IN=0℃V-70℃
V+ = to V- = 9V (Note 5)
60
75 ppm/℃
0.2
1
uV/℃
4
5
6
V
2