HI7131_02 Datasheet, PDF (4/25 Pages) Intersil Corporation – 3 1/2 Digit, Low Power, High CMRR, LCD/LED Display-Type A/D Converters

HI7131, HI7133
EXTERNAL
40
CLOCK
39
38
37
EXTERNAL
REFERENCE
C_VREF
36
1µF
35
C_REF
34
0.1µF ₃₃
EXTERNAL
INPUT
R_{IN 1M}
C_IN
32
31
0.01µF ₃₀
C_AZ
R_INT
C_INT
Critical Components General Specifications:
1. C_INT: Low dielectric absorption capacitor,
polypropylene or similar
2. C_AZ, C_REF, C_IN : Low leakage capacitors
29
0.47µF28
180K
27
0.047µF
HI7131, HI7133
DUT
OSC 1
OSC 2
OSC 3
TEST
REF HI
REF LO
C_REF+
C_REF -
COMMON
IN HI
IN LO
A-Z
BUFF
INT
V+
D1
C1
B1
A1
F1
G1
E1
D2
C2
B2
A2
F2
E2
D3
B3
F3
E3
AB4
POL
BP/GND
G3
A3
C3
G2
V-
+5V
0.47µF
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
0.47µF
-5V
FIGURE 90. TEST CIRCUIT
LCD/LED
DISPLAY
AND
TEST
LOGIC
C_IN = 0.01µF C_AZ = 0.47µF
C_REF = 0.1µF C_VRH =1µF
C_INT = 0.047µF R_IN = 1MΩ
R_INT = 180kΩ
Absolute Maximum Ratings
Supply Voltage, V+ to V- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +15V
Signal Inputs, Pin# 30, 31 (Note 1). . . . . . . . . . . . . . . . . . . . V+ to V-
Reference Inputs, Pin# 35, 36 . . . . . . . . . . . . . . . . . . . . . . . V+ to V-
Clock Input, OSC1, Pin# 40 (Note 2) . . . . . . . . . . . . TEST pin to V+
All Other Analog Leads, Pin# 27-29, 32-34 . . . . . . . . . . . . . V+ to V-
All Other Digital Leads,
Pin# 2-25, 38, 39 (Note 2). . . . . . . . . . . . . . . . . . . TEST Pin to V⁺
Thermal Information
Thermal Resistance (Typical, Note 3)
θ_JA (^oC/W)
PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
50
MQFP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . .
80
Maximum Junction Temperature. . . . . . . . . . . . . . . . . . . . . . . 150^oC
Maximum Storage Temperature Range . . . . . . . . . . -65^oC to 150^oC
Maximum Lead Temperature, PDIP Package (Soldering 10s) 300^oC
(MQFP - Lead Tips Only)
Operating Conditions
Operating Temperature, T_A . . . . . . . . . . . . . . . . . . . . . .0^oC to 70^oC
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. TEST pin is connected to internally generated digital ground through a 500Ω resistor (see text for TEST pin description).
3. θ_JA is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications (Notes 5, 6, 7) T_A = 25^oC. Device is Tested in the Circuit Shown in Figure 2.
Full Scale Range (FSR) = 200.0mV, Unless Otherwise Specified
PARAMETER
TEST CONDITIONS
MIN
TYP MAX
ACCURACY
Zero Input Reading
V_IN = 0V
-000 ±000 +000
UNITS
Reading
4