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Unisonic Technologies
Unisonic Technologies

7106 Datasheet

3 1/2 Digital / LCD Display / A/D Converters


7106 Datasheet Preview


UTC 7106
3 1/2 DIGIT, LCD DISPLAY, A/D
CONVERTERS
DESCRIPTION
The UTC 7106 is a high performance, low power,
3 1/2 digit A/D converter. Included are seven segment
decoders, display drivers, a reference, and a clock.
The UTC 7106 is designed to interface with a liquid
crystal display (LCD) and includes a multiplexed
backplane drive.
The UTC 7106 bring together a combination of high
accuracy, versatility, and true economy. It features
auto zero to less than 10μV, zero drift of less than 1
μV/,input bias current of 10pA (Max),and rollover
error of less than one count. True differential inputs
and reference are useful in all system, 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.
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 Drive
LCD Display
*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
CMOS IC
DIP-40
QFP-44-0.8
UTC
UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R502-018,B
Page 1

UTC 7106
PIN CONFIGURATIONS
CMOS IC
V+ 1
D1 2
C1 3
(1,s)
B1 4
A1 5
F1 6
G1 7
E1 8
D2 9
C2 10
(10 ,s)
B2 11
A2 12
F2 13
E2 14
D3 15
(100 ,s)
B3 16
F3 17
E3 18
(1000) AB4 19
(MINUS) POL 20
DIP- 40
40 OSC 1
39 OSC 2
38 OSC 3
37 TEST
36 REF HI
35 REF LO
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
,
(100 s)
22 G3
21 BP
QFP - 44
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
POL
AB4
E3
F3
B3
A1 F1 G1 E1 D2 C2 B2 A2 F2 E2 D3
UTC
UNISONIC TECHNOLOGIES CO., LTD.
2
QW-R502-018,B
Page 2

UTC 7106
ABSOLUTE MAXIMUM RATINGS(Ta=25)
PARAMETER
Supply Voltage (V+ ~ V-)
Analog Input Voltage (Either Input) (Note 1)
Reference Input Voltage (Either Input)
Operating Temperature Range
CMOS IC
SYMBOL
VDD
VI,ANG
VI,REF
TOP
RATINGS
15
V+ ~ V-
V+ ~ V-
0 ~ +70
UNIT
V
V
V
THERMAL INFORMATION
PARAMETER
SYMBOL RATINGS UNIT
Thermal Resistance (Tyical, Note 2)
DIP-40
QFP-44
θJA
50
75
(°C/W)
Maximum Junction Temperature
TJ 150 °C
Maximum Storage Temperature Range
TSTG
-65 ~ +150
°C
Maximum Lead Temperature (Soldering 10s) (QFP-44 only)
TLOAD
300
Note 1: Input voltages may exceed the supply voltages provided the input current is limited to ±100μA.
°C
Note 2: θJA is measured with the component mounted on a low effective thermal conductivity test board in free air.
See Tech Brief TB379 for details.
ELECTRICAL CHARACTERISTICS (Note 3)
PARAMETER
SYMBOL TEST CONDITIONS
SYSTEM PERFORMANCE
Zero Input Reading
RZ VIN=0.0V, Full Scale=200mV
Ratiometric Reading
RR VIN=VREF, VREF=100mV
Rollover Error
Linearity
Common Mode Rejection Ratio
Noise
Leakage Current Input
Zero Reading Drift
Scale Factor Temperature
Coefficient
End Power Supply Character V+
Supply Current
COMMON Pin Analog Common
Voltage
ER
L
CMRR
VN
IL
DZR
ΦT,S
IEP
VCOM
-VIN=+VIN200mV
Difference in Reading for
Equal Positive and Negative
Inputs Near Full Scale
Full Scale=200mV or Full
Scale=2V Maximum Devi-
ation from Best Straight Line
Fit (Note 5)
VCM=1V,VIN=0V,
Full Scale=200mV(Note 5)
VIN=0V,Full Scale=200mV
(Peak-To-Peak Value Not
Exceeded 95% of Time)
VIN=0(Note 5)
VIN=0, 0~ 70(Note 5)
VIN=199mV, 0~ 70,
(Ext.Ref.0ppm/) (Note 5)
VIN=0
25kΩ Between Common
and Positive Supply (With
Respect to +Supply)
MIN
-000.0
999
2.4
TYP MAX UNIT
±000.0 +000.0
999/1000 1000
Digital
Reading
Digital
Reading
±0.2 ±1 Counts
±0.2 ±1 Counts
50 μV/V
15 μV
1 10 pA
0.2 1 μV/
1 5 ppm/
1.0 1.8 mA
3.0 3.2
V
UTC
UNISONIC TECHNOLOGIES CO., LTD.
3
QW-R502-018,B
Page 3
Part Number 7106
Manufactur Unisonic Technologies
Description 3 1/2 Digital / LCD Display / A/D Converters
Total Page 15 Pages
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