tc7107a Microchip Technology Inc., tc7107a Datasheet - Page 5

• Manufacturer Part Number: tc7107a
• Description: 3-1/2 Digit Analog-to-digital Converters
• Manufacturer: Microchip Technology Inc.

TABLE 1-1:
© 2006 Microchip Technology Inc.
Electrical Characteristics: Unless otherwise noted, specifications apply to both the TC7106/A and TC7107/A at T
f
Z
R/O
CMRR
e
I
TC
I
V
V
V
V
V
Note 1: Input voltages may exceed the supply voltages, provided the input current is limited to ±100μA.
Symbol
CLOCK
L
DD
N
IR
C
CTC
CTC
SD
BD
SF
2: Dissipation rating assumes device is mounted with all leads soldered to printed circuit board.
3: Refer to “Differential Input” discussion.
4: Backplane drive is in phase with segment drive for “OFF” segment, 180° out of phase for “ON” segment.
= 48kHz. Parts are tested in the circuit of the Typical Operating Circuit.
Zero Input Reading
Ratiometric Reading
Rollover Error (Difference in Reading for
Equal Positive and Negative
Reading Near Full Scale)
Linearity (Max. Deviation from Best
Straight Line Fit)
Common Mode Rejection Ratio (Note 3)
Noise (Peak to Peak Value not Exceeded
95% of Time)
Leakage Current at Input
Zero Reading Drift
Scale Factor Temperature Coefficient
Supply Current (Does not include LED
Current For TC7107/A)
Analog Common Voltage
(with Respect to Positive Supply)
Temperature Coefficient of Analog
Common (with Respect to Positive Supply)
Temperature Coefficient of Analog
Common (with Respect to Positive Supply)
TC7106A ONLY Peak to Peak
Segment Drive Voltage
TC7106A ONLY Peak to Peak
Backplane Drive Voltage
TC7107A ONLY
Segment Sinking Current (Except Pin 19)
TC7107A ONLY
Segment Sinking Current (Pin 19)
Frequency is 20 times conversion rate. Average DC component is less than 50mV.
TC7106/A AND TC7107/A ELECTRICAL SPECIFICATIONS
Parameter
7106/7/A
7106/7
-000.0
Min
999
2.7
10
—
—
—
—
—
—
—
—
—
—
-1
-1
4
4
5
999/1000
±000.0
±0.2
±0.2
3.05
Typ
0.2
1.0
0.8
8.0
50
15
20
80
16
—
—
—
1
1
5
5
TC7106/A/TC7107/A
+000.0
1000
Max
3.35
1.8
+1
+1
10
20
50
75
—
—
—
—
—
—
1
2
5
6
6
ppm/°C
ppm/°C
Reading
Reading
ppm/°C
ppm/°C
ppm/°C
Counts
Counts
Digital
Digital
μV/°C
μV/°C
μV/V
Unit
mA
mA
mA
μV
pA
—
V
V
V
V
Full Scale = 200.0mV
V
V
V
Full Scale = 200mV or
Full Scale = 2.000V
V
Full Scale = 200.0mV
V
Full Scale - 200.0mV
V
V
“C” Device = 0°C to +70°C
V
“I” Device = -25°C to +85°C
V
“C” Device = 0°C to +70°C
(Ext. Ref = 0ppm°C)
V
“I” Device = -25°C to +85°C
V
25kΩ Between Common and
Positive Supply
25kΩ Between Common and
Positive Supply
0°C ≤ T
(“C” Commercial Temperature
Range Devices)
0°C ≤ T
(“I” Industrial Temperature
Range Devices)
V+ to V- = 9V
(Note 4)
V+ to V- = 9V
(Note 4)
V+ = 5.0V
Segment Voltage = 3V
V+ = 5.0V
Segment Voltage = 3V
IN
IN
REF
IN
CM
IN
IN
IN
IN
IN
IN
IN
- = + V
= 0.0V
= V
= 0V
= 0V
= 0V
= 0V
= 199.0mV,
= 199.0mV
= 0.8
= ±1V, V
= 100mV
Test Conditions
REF
A
A
≤ +70°C
≤ +70°C
IN
+ ≅ 200mV
IN
DS21455C-page 5
A
= 0V,
= 25°C,