HI7106 Datasheet, PDF (1/11 Pages) Intersil Corporation – 3 1/2 Digit, LCD/LED Display, A/D Converter

HI7106
July 1998
3¹/₂ Digit, LCD/LED Display, A/D Converter
Features
• Guaranteed Zero Reading for 0V Input on All Scales
• True Polarity at Zero for Precise Null Detection
• 1pA Typical Input Current
• True Differential Input and Reference,
Direct Display Drive
• Low Noise - Less Than 15µV_P-P
• On Chip Clock and Reference
• Low Power Dissipation - Typically Less Than 10mW
• No Additional Active Circuits Required
• Enhanced Display Stability
• Enhanced VCOM Reference Stability
Description
The Intersil HI7106 is a high performance, low power, 3¹/₂
digit A/D converter. Included are seven segment decoders,
display drivers, a reference, and a clock. The HI7106 is
designed to interface with a liquid crystal display (LCD) and
includes a multiplexed backplane drive.
The HI7106 brings together a combination of high accuracy,
versatility, and true economy. It features auto-zero to less
than 10µV, zero drift of less than 1µV/^oC, input bias current
of 10pA (Max), and rollover error of less than one count.
True differential inputs and reference are useful in all sys-
tems, but give the designer an uncommon advantage when
measuring load cells, strain gauges and other bridge type
transducers. Finally, the true economy of single power supply
operation enables a high performance panel meter to be built
with the addition of only 10 passive components and a display.
Ordering Information
PART NO.
HI7106CPL
HI7106CM44
HI7106C/D
TEMP.
RANGE (^oC)
PACKAGE
0 to 70 40 Ld PDIP
0 to 70 44 Ld MQFP
0 to 70 DIE
PKG. NO.
E40.6
Q44.10x10
Pinouts
HI7106
(PDIP)
TOP VIEW
V+ 1
D1 2
C1 3
B1 4
(1’s) A1 5
F1 6
G1 7
E1 8
D2 9
C2 10
B2 11
(10’s)
A2 12
F2 13
E2 14
D3 15
B3 16
(100’s)
F3 17
E3 18
(1000) AB4 19
(MINUS)
POL 20
40 OSC 1
39 OSC 2
38 OSC 3
37 TEST
36 REF HI
35 REF LO
34 C_REF+
33 C_REF-
32 COMMON
31 IN HI
30 IN LO
29 A-Z
28 BUFF
27 INT
26 V-
25 G2 (10’s)
24 C3
23 A3 (100’s)
22 G3
21 BP/GND
HI7106
(MQFP)
TOP VIEW
NC
NC
TEST
OSC 3
NC
OSC 2
OSC 1
V+
D1
C1
B1
44 43 42 41 40 39 38 37 36 35 34
1
33
2
32
3
31
4
30
5
29
6
28
7
27
8
26
9
25
10
24
11
23
12 13 14 15 16 17 18 19 20 21 22
NC
G2
C3
A3
G3
BP/GND
POL
AB4
E3
F3
B3
A1 F1 G1 E1 D2 C2 B2 A2 F2 E2 D3
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 1999
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File Number 4551