MAX1978/MAX1979
Integrated Temperature
Controllers for Peltier Modules
ELECTRICAL CHARACTERISTICS (continued)
(V DD = PV DD 1 = PV DD 2 = V SHDN = 5V, FREQ = GND, CTLI = FB+ = FB- = MAXV = MAXIP = MAXIN = REF, T A = -40°C to +85°C ,
unless otherwise noted.) (Note 5)
PARAMETER
MAXV Threshold Accuracy
SYMBOL
CONDITIONS
V MAXV = V REF ? 0.67,
V OS1 to V OS2 = ±4V, V DD = 5V
MIN
-1
MAX
+1
UNITS
%
V MAXV = V REF ? 0.33, V OS1 to V OS2 = ±2V,
V DD = 3V
-2
+2
MAXV, MAXIP, MAXIN
Input Bias Current
CTLI Gain
CTLI Input Resistance
I MAXV-BIAS ,
I MAXI_-BIAS
A CTLI
R CTLI
V MAXV = V MAXI_ = 0.1V or 1.5V
V CTLI = 0.5V to 2.5V (Note 4)
1M ? terminated at REF
-0.1
9.5
0.5
+0.1
10.5
2.0
μA
V/V
M ?
Error Amp Transconductance
ITEC Accuracy
g m
V OS1 to V CS = +100mV or -100mV
50
-10
175
+10
μS
%
ITEC Load Regulation
Instrumentation Amp
Input Bias Current
Instrumentation Amp
Offset Voltage
Instrumentation Amp
Preset Gain
Integrator Amp Input Bias Current
Integrator Amp Voltage Offset
Undedicated Chopper Amp Input
Bias Current
Undedicated Chopper Amp
Offset Voltage
BFB_ Buffer Error
UT and OT Leakage Current
UT and OT Output Low Voltage
? V ITEC
I DIF-BIAS
V DIF-OS
A DIF
I INT-BIAS
V INT-OS
I AIN-BIAS
V AIN-OS
I LEAK
V OL
V OS1 to V CS = +100mV or
-100mV, I ITEC = ±10μA
V DD = 3V to 5.5V
R LOAD = 10k ? to REF
V DD = 3V to 5.5V
V DD = 3V to 5.5V
V DD = 3V to 5.5V
V DD = 3V to 5.5V
C LOAD < 100pF
V UT = V OT = 5.5V
Sinking 4mA
-0.125
-10
-200
45
-3
-10
-200
-200
+0.125
+10
+200
55
1
+3
+10
+200
+200
1
150
%
nA
μV
V/V
nA
mV
nA
μV
μV
μA
mV
A CTLI = ( V CTLI REF )
Note 3: Includes power FET leakage.
Note 4: CTLI gain is defined as:
? V
( V OSI ? V CS )
Note 5: Specifications to -40°C are guaranteed by design, not production tested.
6
Maxim Integrated
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