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參數資料
| 型號： | HI7131CM44 |
| 廠商： | HARRIS SEMICONDUCTOR |
| 元件分類： | ADC |
| 英文描述： | 3 1/2 Digit, Low Power, High CMRR, LCD/LED Display-Type A/D Converters |
| 中文描述： | DUAL-SLOPE ADC, PARALLEL ACCESS, PQFP44 |
| 文件頁數： | 17/21頁 |
| 文件大小： | 209K |
| 代理商： | HI7131CM44 |
3-1842
Typical Applications
FIGURE 100. HI7131 AND HI7133 USING THE INTERNAL
REFERENCE
FIGURE 101. HI7131 AND HI7133 WITH AN EXTERNAL
BAND-GAP REFERENCE (1.2V TYPE)
FIGURE 102. RECOMMENDED COMPONENT VALUES FOR
2.000V FULL-SCALE, 3 READINGS/SEC
FIGURE 103. HI7131 AND HI7133 OPERATED FROM SINGLE
+5V SUPPLY
28
40
39
38
37
36
35
34
33
32
31
30
29
27
26
25
24
23
22
21
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 -
G2
C3
A3
G3
BP/GND
50pF
TO PIN 1
SET V
REF
= 100mV
0.1
μ
F
0.01
μ
F
1M
180k
20k
220k
IN
+
-
9V
180k
0.047
μ
F
0.47
μ
F
TO BACKPLANE 0V
TO DISPLAY
Values shown are for 200mV full-scale, 3 readings/sec., floating
supply voltage (9V battery).
28
40
39
38
37
36
35
34
33
32
31
30
29
27
26
25
24
23
22
21
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 -
G2
C3
A3
G3
BP/GND
50pF
TO PIN 1
SET V
REF
= 100mV
0.1
μ
F
0.01
μ
F
1M
560k
20k
180k
IN
+
180k
0.15
μ
F
0.47
μ
F
TO BACKPLANE 0V
TO DISPLAY
IN LO is tied to supply GND establishing the correct common-mode
voltage. COMMON acts as a pre-regulator for the reference. Values
shown are for 1 reading/sec.
27k
1.2V (ICL8069)
V
-
V +
28
27
26
25
24
23
22
21
40
39
38
37
36
35
34
33
32
31
30
29
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 -
G2
C3
A3
G3
BP/GND
50pF
TO PIN 1
SET V
REF
= 1V
0.1
μ
F
0.01
μ
F
1M
180k
250k
240k
IN
+
-
1.8M
0.047
μ
F
0.47
μ
F
TO BACKPLANE 0V
TO DISPLAY
For 1 reading/sec., change C
INT
, R
OSC
to values of Figure 12.
V +
V -
28
27
26
25
24
23
22
21
40
39
38
37
36
35
34
33
32
31
30
29
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 -
G2
C3
A3
G3
BP/GND
50pF
TO PIN 1
SET V
REF
= 100mV
0.1
μ
F
0.01
μ
F
1M
180k
20k
180k
IN
+
-
180k
0.047
μ
F
0.47
μ
F
TO BACKPLANE 0V
TO DISPLAY
An external reference must be used in this application, since the
voltage between V+ and V- is insufficient for correct operation of the
internal reference. COMMON holds the IN LO almost at the middle
of the supply,
≈
2.7V.
27k
1.2V (ICL8069)
+5V
HI7131, HI7133
相關PDF資料 |
PDF描述 |
|---|---|
| HI7131CPL | 3 1/2 Digit, Low Power, High CMRR, LCD/LED Display-Type A/D Converters |
| HI7133 | 3 1/2 Digit, Low Power, High CMRR, LCD/LED Display-Type A/D Converters |
| HI7133CM44 | 3 1/2 Digit, Low Power, High CMRR, LCD/LED Display-Type A/D Converters |
| HI7133CPL | Power Resistor; Series:200; Resistance:4.5kohm; Resistance Tolerance: 5%; Power Rating:8W; Resistor Element Material:Ceramic; Temperature Coefficient:260 ppm; Leaded Process Compatible:No; Packaging:Bulk RoHS Compliant: No |
| HI7190IP | null24-Bit, High Precision, Sigma Delta A/D Converter |
相關代理商/技術參數 |
參數描述 |
|---|---|
| HI7131CM44S2324 | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Harris Corporation 功能描述: |
| HI7131CPL | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| HI7133 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:3 1/2 Digit, Low Power, High CMRR, LCD/LED Display-Type A/D Converters |
| HI7133 WAF | 制造商:Harris Corporation 功能描述: |
| HI7133CM44 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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