Low IBIAS, +1.4V/800nA, Rail-to-Rail Op Amps
with +1.2V Buffered Reference
ELECTRICAL CHARACTERISTICS (continued)
(VDD = +3V, VSS = VCM = 0V, VOUT_ = VDD/2, RL to VDD/2, CL = 15pF, TA = TMIN to TMAX, unless otherwise specified.) (Note 2)
PARAMETER
OPERATIONAL AMPLIFIERS
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Input Offset Voltage
VOS
±8
mV
Input Offset Voltage Temperature
Coefficient
TCVOS
±1
µV/°C
Input Bias Current
IB
±100
pA
Input Offset Current
IOS
±200
pA
Input Common-Mode Voltage
Range
VCM
VDD = 1.4V
(MAX4036/MAX4038 only)
VSS
Guaranteed by
CMRR test
VDD = 1.8V
VSS
VDD = 3.3V
VSS
VDD -
0.4
VDD -
V
0.4
VDD -
0.2
VDD = 1.4V, VSS ≤ VCM ≤ (VDD - 0.4V)
(MAX4036/MAX4038 only)
44
Common-Mode Rejection Ratio
CMRR
dB
VDD = 1.8V, VSS ≤ VCM ≤ (VDD - 0.4V)
50
VDD = 3.3V, VSS ≤ VCM ≤ (VDD - 0.2V)
52
1.4V ≤ VDD ≤ 3.6V
60
Power-Supply Rejection Ratio
PSRR (MAX4036/MAX4038 only)
dB
1.8V ≤ VDD ≤ 3.6V
60
Large-Signal Voltage Gain
AVOL
RL = 100kΩ, 50mV ≤ VOUT ≤ (VDD - 50mV)
75
RL = 5kΩ, 150mV ≤ VOUT ≤ (VDD - 150mV)
73
Output Voltage Swing High
VDD - VOH
RL = 100kΩ
RL = 5kΩ
Output Voltage Swing Low
VOL - VSS
RL = 100kΩ
RL = 5kΩ
REFERENCE (MAX4037/MAX4039)
Reference Voltage Temperature
Coefficient
MAX4037EUT-T, MAX4039ETB,
TCVREF (Note 1) MAX4039EUB
25
MAX4039EBL-T
35
Line Regulation
∆VREF/
∆VDD
VDD = 1.8V to 3.6V
Load Regulation
∆VREF/
∆ILOAD
0 ≤ ILOAD ≤ 100µA, sourcing
-20µA ≤ ILOAD ≤ 0, sinking
Capacitive-Load Stability Range
CLOAD (Note 1)
0
Note 1: Guaranteed by design.
Note 2: All devices are production tested at TA = +25°C. All temperature limits are guaranteed by design.
Note 3: Output settles within 1% of final value.
dB
10
mV
100
10
mV
100
120
ppm/°C
200
0.6
%/V
0.003
0.015
250
%/µA
pF
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