ICL7109
o
Analog Electrical Specifications V+ = +5V, V- = -5V, GND = 0V, T = 25 C, f
= 3.58MHz,
A
CLK
Unless Otherwise Specified (Continued)
PARAMETER
TEST CONDITIONS
= 408.9mV = > 7770 Reading Ext. Ref. 0ppm/ C
MIN
TYP
MAX
UNIT
o
o
Scale Factor Temperature Coefficient
V
-
1
5
ppm/ C
IN
8
(Note 4)
REFERENCE VOLTAGE
Ref Out Voltage, V
Referred to V+, 25kΩ Between V+ and REF OUT
25kΩ Between V+ and REF OUT (Note 4)
-2.4
-
-2.8
80
-3.2
-
V
REF
o
Ref Out Temperature Coefficient
POWER SUPPLY CHARACTERISTICS
Supply Current V+ to GND, I+
ppm/ C
V
= 0V, Crystal Osc 3.58MHz Test Circuit
-
-
700
700
1500
1500
µA
µA
IN
Supply Current V+ to V-, I
Pins 2 - 21, 25, 26, 27, 29; Open
SUPP
o
Digital Electrical Specifications V+ = +5V, V- = -5V, GND = 0V, T = 25 C, Unless Otherwise Specified
A
PARAMETER
DIGITAL OUTPUTS
Output High Voltage, V
TEST CONDITIONS
MIN
TYP
MAX
UNIT
I
I
= 100µA Pins 2 - 16, 18, 19, 20
3.5
4.3
±0.20
±0.01
5
-
±0.40
±1
V
V
OH
OL
OUT
OUT
Output Low Voltage, V
= 1.6mA Pins 2 - 16, 18, 19, 20
-
-
-
Output Leakage Current
Control I/O Pullup Current
Pins 3 - 16 High Impedance
µA
µA
Pins 18, 19, 20 V
(Note 4)
= V+ -3V MODE Input at GND
-
OUT
Control I/O Loading
HBEN Pin 19 LBEN Pin 18 (Note 4)
-
−
50
pF
DIGITAL INPUTS
Input High Voltage, V
IH
Pins 18 - 21, 26, 27 Referred to GND
Pins 18 - 21, 26, 27 Referred to GND
3.0
-
-
-
1
-
V
Input Low Voltage, V
-
-
-
-
V
IL
Input Pull-Up Current
Input Pull-Up Current
Pins 26, 27 V
Pins 17, 24 V
= (V+) -3V
= (V+) -3V
5
µA
µA
µA
OUT
OUT
25
5
-
Input Pull-Down Current
Pin 21 V
= GND +3V
-
OUT
TIMING CHARACTERISTICS
MODE Input Pulse Width, t
(Note 4)
50
-
-
ns
W
NOTES:
1. Input voltages may exceed the supply voltages provided the input current is limited to ±100µA.
2. Due to the SCR structure inherent in the process used to fabricate these devices, connecting any digital inputs or outputs to voltages
greater than V+ or less than GND may cause destructive device latchup. For this reason it is recommended that no inputs from sources
other than the same power supply be applied to the ICL7109 before its power supply is established, and that in multiple supply systems
the supply to the ICL7109 be activated first.
3. This limit refers to that of the package and will not be obtained during normal operation.
4. This parameter is not production tested, but is guaranteed by design.
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5. Roll-over error for T = -55 C to 125 C is ±10 counts (Max).
A
6. A full scale voltage of 2.048V is used because a full scale voltage of 4.096V exceeds the devices Common Mode Voltage Range.
7. For CERDIP package the Ratiometric error can be -4 (Min).
3
INTERSIL [ Intersil ]
