Datasheet

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
= 0°C to +85°C,
unless otherwise noted. Typical values at T
A
= +25°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Integrator Amp Open-Loop Gain A
OL-INT
R
LOAD
= 10kΩ to REF 120 dB
Integrator Amp CMRR CMRR
INT
100 dB
Integrator Amp Input Bias Current I
INT-BIAS
V
DD
= 3V to 5.5V 1 nA
Integrator Amp Voltage Offset V
INT-OS
V
DD
= 3V to 5.5V -3 +0.1 +3 mV
Integrator Amp Gain Bandwidth GBW
INT
100 kHz
Undedicated Chopper Amp
Open-Loop Gain
A
OL-AIN
R
LOAD
= 10kΩ to REF 120 dB
Undedicated Chopper Amp
CMRR
CMRR
AIN
85 dB
Undedicated Chopper Amp Input
Bias Current
I
AIN-BIAS
V
DD
= 3V to 5.5V -10 0 +10 nA
Undedicated Chopper Amp
Offset Voltage
V
AIN-OS
V
DD
= 3V to 5.5V -200 +10 +200 µV
Undedicated Chopper Amp Gain
Bandwidth
GBW
AIN
100 kHz
Undedicated Chopper Amp
Output Ripple
V
RIPPLE
A = 5 20 mV
BFB_ Buffer Error C
L OA D
< 100p F -200 0 +200 µV
UT and OT Leakage Current I
LEAK
V
UT
= V
OT
= 5.5V 1 µA
UT and OT Output Low Voltage V
OL
Sinking 4mA 50 150 mV
UT Trip Threshold FB+ - FB- (see Typical Application Circuit) -20 mV
OT Trip Threshold FB+ - FB- (see Typical Application Circuit)20 mV
MAX1978/MAX1979
4
Maxim Integrated