TLC2543C, TLC2543I, TLC2543M
12-BIT ANALOG-TO-DIGITAL CONVERTERS
WITH SERIAL CONTROL AND 11 ANALOG INPUTS
SLAS079D – DECEMBER 1993 – REVISED MAY 1997
absolute maximum ratings over operating free-air temperature range (unless otherwise
noted)
†
Supply voltage range, V
CC
(see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.5 V to 6.5 V
Input voltage range, V
I
(any input) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.3 V to V
CC
+ 0.3 V
Output voltage range, V
O
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.3 V to V
CC
+ 0.3 V
Positive reference voltage, V
ref +
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V
CC
+ 0.1 V
Negative reference voltage, V
ref –
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.1 V
Peak input current, I
I
(any input) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±
20 mA
Peak total input current, I
I
(all inputs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±
30 mA
Operating free-air temperature range, T
A
: TLC2543C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
TLC2543I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 40°C to 85°C
TLC2543M . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 55°C to 125°C
Storage temperature range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from the case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: All voltage values are with respect to the GND terminal with REF – and GND wired together (unless otherwise noted).
recommended operating conditions
MIN
Supply voltage, VCC
Positive reference voltage, Vref + (see Note 2)
Negative reference voltage, Vref – (see Note 2)
Differential reference voltage, Vref + – Vref – (see Note 2)
Analog input voltage (see Note 2)
High-level control input voltage, VIH
Low-level control input voltage, VIL
Clock frequency at I/O CLOCK
Setup time, address bits at DATA INPUT before I/O CLOCK↑, tsu(A) (see Figure 4)
Hold time, address bits after I/O CLOCK↑, th(A) (see Figure 4)
Hold time, CS low after last I/O CLOCK↓, th(CS) (see Figure 5)
Setup time, CS low before clocking in first address bit, tsu(CS) (see Note 3 and Figure 5)
Pulse duration, I/O CLOCK high, twH(I/O)
Pulse duration, I/O CLOCK low, twL(I/O)
Transition time, I/O CLOCK high to low, tt(I/O) (see Note 4 and Figure 6)
Transition time, DATA INPUT and CS, tt(CS)
TLC2543C
Operating free-air temperature, TA
TLC2543I
TLC2543M
0
– 40
– 55
VCC = 4.5 V to 5.5 V
VCC = 4.5 V to 5.5 V
2.5
0
2
0.8
0
100
0
0
1.425
120
120
1
10
70
85
125
°C
4.1
4.5
NOM
5
VCC
0
VCC
VCC + 0.1
VCC
MAX
5.5
UNIT
V
V
V
V
V
V
V
MHz
ns
ns
ns
µs
ns
ns
µs
µs
NOTES: 2. Analog input voltages greater than that applied to REF+ convert as all ones (111111111111), while input voltages less than that applied
to REF– convert as all zeros (000000000000).
3. To minimize errors caused by noise at the CS input, the internal circuitry waits for a setup time after CS↓ before responding to control
input signals. No attempt should be made to clock in an address until the minimum CS setup time has elapsed.
4. This is the time required for the clock input signal to fall from VIHmin to VILmax or to rise from VILmax to VIHmin. In the vicinity of
normal room temperature, the devices function with input clock transition time as slow as 1
µs
for remote data acquisition applications
where the sensor and the A/D converter are placed several feet away from the controlling microprocessor.
4
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•
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