KL7107 Datasheet, PDF (1/11 Pages) IK Semicon Co., Ltd – Guaranteed Zero Reading for 0V Input on All Scales

3 ½ - Digit LED Display, A/D Converters
TECHNICAL DATA
KL7107
DESCRIPTION
The KL7107 are high performance, low power, 3 ½
digit A/D converters. Included are seven segment decoders,
display drivers, a reference, and a clock.
The KL7107 will directly drive an instrument size light
emitting diode (LED) display.
The KL7107 bring together a combination of high
accuracy,versatility, and true economy. It features autozero
to less than 10 µV, zero drift of less than 1µV/°C, input
bias current of 10pA (Max), and rollover error of less than
one count. True differential inputs and reference are useful
in all systems, but give the designer an uncommon
advantage when measuring load cells, strain gauges and
other bridge type transducers.
40
1
DIP-40
Device
KL7107N
ORDERING INFORMATION
Temperature Range
ТA= 0°C …+70°C
Package
DIP-40
Packing
Tube
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 LED Display Drive
• Low Noise – Less Than 15µVp-p
• On Chip Clock and Reference
• Low Power Dissipation – Typically Less Than 10mW
• No Additional Active Circuits Required
• Enhanced Display Stability
PIN CONNECTIONS
TOP VIEW
V+ 1
D1 ²
C1 3
B1 4
A1 ⁵
F1 6
G1 ⁷
E1 8
D2 9
С2 ¹⁰
B2 11
A2 12
F2 ¹³
E2 14
D3 ¹⁵
B3 16
F3 ¹⁷
E3 18
(1000) AB4 19
POL 20
(MINUS)
40 OSC 1
39 _{OSC 2}
38 OSC 3
37 TEST
36 _{REF H1}
35 REF L0
34 _CREF+
33 CREF-
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
22 G3
(100 ^, s)
21 GND
1
July 2011, ver.00