© 2005
PRELIMINARY
LDTC2/2
PAGE 5
LDTC2/2-00400-A Rev A
Short Term Stability, 1 hour
Long Term Stability, 24 hour
Control Loop
P (Proportional Gain)
I (Integrator Time Constant)
Setpoint vs. Actual T Accuracy
OUTPUT
Current, peak, see SOA Chart
Compliance Voltage,
Pin 11 to Pin 12
Compliance Voltage,
Pin 11 to Pin 12
Compliance Voltage,
Pin 11 to Pin 12
Compliance Voltage,
Pin 11 to Pin 12
Compliance Voltage,
Resistive Heater
POWER SUPPLY
Voltage, VDD
Current, VDD supply, quiescent
Voltage, Vs
Current, Vs supply, quiescent
INPUT
Offset Voltage, initial
Bias Current
Offset Current
Common Mode Range
Common Mode Rejection
Power Supply Rejection
Input Impedence
Input voltage range
TSET = 25˚C using 10 k
Ω
thermistor
TSET = 25˚C using 10 k
Ω
thermistor
TSET = 25˚C using 10 k
Ω
thermistor
Full Temp. Range, I
OUT
= 100 mA
Full Temp. Range, I
OUT
= 1 Amp
Full Temp. Range, I
OUT
= 1.5 Amps
Full Temp. Range, I
OUT
= 2.0 Amps
Full Temp. Range, I
OUT
= 2.0 Amps
Pins 2 and 9
Pins 2 and 9, T
AMBIENT
= 25˚C
Pins 2 and 9, T
AMBIENT
= 25˚C
Pins 2 and 9, Full Temp. Range
Full Temperature Range
Full Temperature Range
0.001
0.003
P
18
2
±2.0
| V
S
- 0.7 |
| V
S
- 1.2 |
| V
S
- 1.6 |
| V
S
- 1.8 |
| V
S
- 1.7|
4.5
4.5
20
0
60
60
GND
0.005
0.008
PI
20
3
<0.2%
(Rev B)
±2.2
| V
S
- 0.5 |
| V
S
- 1.0 |
| V
S
- 1.4 |
| V
S
- 1.6 |
| V
S
- 1.6 |
55
50
1
20
2
85
80
500
0.010
0.010
22
4
± 2.5
12
105
28
100
2
50
10
VDD-2
2
VDD-2
2
˚C
˚C
A/V
Sec.
Amps
Volts
Volts
Volts
Volts
Volts
mA
Volts
mA
mV
nA
nA
V
dB
dB
k
Ω
Volts
Temperature Control
PARAMETER
TEMPERATURE CONTROL
TEST CONDITIONS
MIN
TYP
UNITS
MAX
2
The bias source has a compliance up to VDD - 2.0 V. In normal operation this limits the sensor voltage range tp
0.25V to VDD - 2.0V. While voltages up to +/- 5V outside this range on the Vset pin will not damage the unit, it will
not provide proper control under these conditions
.
NOTE: Operation higher than 5V on VDD (i.e. 12V) requires close evaluation of the SOA curves and
current limit settings. Damage to the WLD or WTC will occur if they are operated outside their Safe
Operating Area. Contact the factory if you plan to use higher than 5V.
ELECTRICAL AND OPERATING SPECIFICATIONS, continued
