TC7109 TelCom, TC7109 Datasheet - Page 2

• Manufacturer Part Number: TC7109
• Description: 12-BIT UP-COMPATIBLE ANALOG-TO-DIGITAL CONVERTERS
• Manufacturer: TelCom

3-92
TC7109
TC7109A
ABSOLUTE MAXIMUM RATINGS*
Positive Supply Voltage (GND to V
Negative Supply voltage (GND to V
Analog Input Voltage (Low to High) (Note 1) ....... V
Reference Input Voltage (Low to High (Note 1) .. V
Digital Input Voltage (Pins 2–27) (Note 2) ..... GND –0.3V
Power Dissipation, T
Operating Temperature Range
Storage Temperature Range ............... – 65 C to +150 C
Lead Temperature (Soldering, 10 sec) ................. +300 C
ELECTRICAL CHARACTERISTICS:
Symbol
Analog
NL
CMRR
V
e
I
TC
TC
I
I
IN
+
S
N
CMR
ZS
FS
CerDIP ............................................................. 2.29W
Plastic DIP ....................................................... 1.23W
PLCC ............................................................... 1.23W
PQFP ............................................................... 1.00W
Plastic Package (C) ............................... 0 C to +70 C
Ceramic Package (I) ....................... – 25 C to +85 C
Parameter
Overload Recovery Time
(TC7109A)
Zero Input Reading
Ratio Metric Reading
Nonlinearity (Max Deviation
From Best Straight Line Fit)
Roll-Over Error (Difference in
Reading for Equal Positive and
Negative Inputs Near (Full Scale)
Input Common-Mode
Rejection Ratio
Common-Mode Voltage
Range
Noise (P-P Value Not
Exceeded 95% of Time)
Leakage Current at Input
Zero Reading Drift
Scale-Factor
Temperature Coefficient
Supply Current
(V
Supply Current (V
+
to GND)
A
< 70 C, (Note 3)
(M) ................... – 55 C to +125 C
+
to V
–
+
)
–
) ..................... +6.2V
) ....................... –9V
All parameters with V
unless otherwise indicated.
Test Conditions
V
Full Scale = 409.6 mV
V
V
Full Scale = 409.6 mV to
2.048V Over Full Operating
Temperature Range
Full Scale = 409.6 mV to
2.048V Over Full Operating
Temperature Range
V
Full Scale = 409.6 mV
Input High, Input Low,
and Common Pins
V
Full Scale = 409.6 mV
V
C Device: 0 C
I Device: –25 C
M Device: –55 C
V
V
Reading, Ext Ref = 0 ppm/ C
V
3.58 MHz Test Circuit
Pins 2–21, 25, 26, 27, 29 Open
IN
IN
REF
CM
IN
IN
IN
IN
IN
, All Packages: +25 C
= 0V
= V
= 0V
= 0V
= 408.9 mV = >7770
= 0V, Crystal Oscillator
+
+
= 204.8 mV
1V, V
to V
to V
REF
IN
–
–
= 0V
T
*Static-sensitive device. Unused devices must be stored in conductive
material. Protect devices from static discharge and static fields. Stresses
above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. These are stress ratings only and functional
operation of the device at these or any other conditions above those
indicated in the operational sections of the specifications is not implied.
Exposure to Absolute Maximum Rating Conditions for extended periods
may affect device reliability.
NOTES: 1. Input voltages may exceed supply voltages if input current is
A
T
A
T
ANALOG-TO-DIGITAL CONVERTERS
A
+70 C
+
+85 C
8
= +5V, V
+125 C
2. Connecting any digital inputs or outputs to voltages greater
3. This limit refers to that of the package and will not occur during
limited to 100 A.
than V
up. Therefore, it is recommended that inputs from sources
other than the same power supply should not be applied to
the TC7109A before its power supply is established. In
multiple supply systems, the supply to the device should be
activated first.
normal operation.
+
–
or less than GND may cause destructive device latch-
= –5V, GND = 0V, T
– 0000
V
3777
Min
–
—
–1
–1
—
—
—
—
—
—
—
+1.5
TELCOM SEMICONDUCTOR, INC.
12-BIT P-COMPATIBLE
8
8
3777
4000
0000
Typ
100
700
700
0.02
0.2
50
15
20
—
0.2
0
1
2
1
8
8
8
+0000
4000
V
1500
1500
Max
A
100
250
+1
+1
—
—
10
+
1
5
1
5
= +25 C,
–1
8
8
Unit
Measurement
Cycle
Octal Reading
Octal Reading
Count
Count
V
pA
pA
pA
nA
V
A
A
V/V
V/ C
V/ C