ICL7104
System Electrical Specifications: ICL8052/ICL7104 V++ = +15V, V+ = +5V, V- = -15V, f
(Note 16) (Continued)
= 200kHz
CLOCK
ICL8052A/ICL7104-14
ICL8052A/ICL7104-16
TEST
PARAMETER
Leakage Current at Input (Note 14)
Zero Reading Drift
CONDITIONS
MIN
TYP
20
MAX
MIN
TYP
20
MAX
UNITS
V
V
= 0V
-
-
30
-
-
-
30
-
pA
IN
IN
o
= 0V,
o
0.5
0.5
µV/ C
o
0 C to 70 C
o
Scale Factor Temperature Coefficient
V
= 4V,
-
2
-
-
2
-
ppm/ C
IN
o
o
0 C to 50 C
ext. ref. 0ppm/ C
o
NOTES:
11. Tested with low dielectric absorption integrating capacitor.
12. The input bias currents are junction leakage currents which approximately double for every 10 C increase in the junction temperature,
T . Due to limited production test time, the input bias currents are measured with junctions at ambient temperature. In normal operation
o
J
the junction temperature rises above the ambient temperature as a result of internal power dissipation, P . T = T + R
P where
D
J
A
θJA
D
R
is the thermal resistance from junction to ambient. A heat sink can be used to reduce temperature rise.
θJA
o
13. The temperature range can be extended to 70 C and beyond if the Auto-Zero and Reference capacitors are increased to absorb the high
temperature leakage of the 8068. See note 14 above.
14. System Electrical Specifications are not tested; for reference only.
CONTROL
CONVERT
MODE
R/H
OR
≥18
POL
MSB
7104 -16
8052A/
8068A
18
LSB
CE/LD HBEN MBEN LBEN
OR CHIP SELECT 2
CHIP SELECT 1
FIGURE 2. FULL 18-BIT THREE-STATE OUTPUT
CONVERT
R/H
CONVERT
CONVERT
R/H
MODE CE/LD
7104
MODE CE/LD
7104
R/H
OR
MODE CE/LD
7104
OR
OR
2
8
2
POL
POL
MSB
POL
10
8
MSB
MSB
8052A/
8068A
8052A/
8068A
8052A/
8068A
16
8
LSB
LSB
LSB
HBEN MBEN LBEN
CONTROL
HBEN MBEN LBEN
HBEN MBEN LBEN
CONTROL
CONTROL
FIGURE 3. VARIOUS COMBINATIONS OF BYTE DISABLES
6
ETC [ ETC ]
