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NTE2050 Datasheet(PDF) 3 Page - NTE Electronics

Part No. NTE2050
Description  Integrated Circuit 31/2-Digit Single Chip A/D Converter
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Maker  NTE [NTE Electronics]
Homepage  http://www.nteinc.com
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NTE2050 Datasheet(HTML) 3 Page - NTE Electronics

   
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Electrical Characteristics (Cont’d): (TA = +25°C, fclock = 48kHz unless otherwise specified)
Parameter
Test Conditions
Min
Typ
Max
Unit
Analog Common Voltage Common
(With Respect to Positive Supply)
25k
Ω Between Common
& Positive Supply
2.4
2.8
3.2
V
Temperature Coefficient of Analog
Common (With Respect to
Positive Supply)
25k
Ω Between Common
& Positive Supply
80
ppm/
°C
Peak–Peak Segment Drive Voltage,
Peak–Peak
Backplane
Drive
Voltage (NTE2051 Only)
V+ to V– = 9V, Note 4
4
5
6
V
Segment Sinking Current
(NTE2050 Only)
(Except Pin19)
(Pin19 Only)
V+ = 5V
Segment Voltage = 3V
5
10
8
16
mA
Note 4. Back plane drive is in phase with segment drive for “off” segment, 180
° outp of phase for “on”
segment. Frequency is 20 times conversion rate. Average DC component is less than
50mV.
Pin Connection Diagram
A/Z
Units E1
OSC 1
Units A1
Units B1
Units C1
Units F1
Ref High
C (–)
Units G1
OSC 3
Units D1
1
2
3
4
5
6
7
40
39
38
37
OSC 2
Test
36
35 Ref Low
34 C (+) Ref
8
33
Tens D2
Common
9
32
Tens B2
In Low
Tens C2 10
31 In High
11
30
Tens A2 12
29
BP/GND*
100’s B3
Tens F2
Tens E2
Buff
G2 Tens
100’s D3
13
14
15
28
27 Int
26 V (–)
16
25
100’s F3
C3 100’s
17
24
AB4
G3 100’s
100’s E3 18
23 A3 100’s
19
22
Polarity (–) 20
21
Units V(+)
Note: Pin21 is GND on the NTE2050


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