MAX4038ETA datasheet(3/19 Pages) MAXIM

3 / 19 page

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 = +25°C, unless otherwise specified.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

RL = 100k

Ω, 50mV ≤ VOUT ≤ (VDD - 50mV)

108

Large-Signal Voltage Gain

AVOL

RL = 5k

Ω, 150mV ≤ VOUT ≤ (VDD - 150mV)

105

RL = 100k

Ω

Output Voltage Swing High

VDD - VOH

RL = 5k

Ω

RL = 100k

Ω

Output Voltage Swing Low

VOL - VSS

RL = 5k

Ω

Output Short-Circuit Current

ISCO

To VDD or VSS

±13

Gain-Bandwidth Product

GBW

kHz

Phase Margin

θM

Degrees

Slew Rate

0.4

V/ms

Power-On Time

tON

(Note 3)

0.25

Input Noise-Voltage Density

f = 1kHz

500

nV/√

Capacitive-Load Stability

CLOAD

AVCL = 1V/V, no sustained oscillations

5000

REFERENCE (MAX4037/MAX4039)

Reference Voltage

VREF

1.226

1.232

1.238

Line Regulation

∆VREF/

∆VDD

VDD = +1.8V to +3.6V

0.3

%/V

0 ≤ ILOAD ≤ 100µA, sourcing

0.0015

Load Regulation

∆VREF/

∆ILOAD

-20µA ≤ ILOAD ≤ 0, sinking

0.0075

%/µA

Reference Output Voltage Noise

0.1Hz to 10Hz

µVP-P

Short to VDD

0.25

Output Short-Circuit Current

ISCR

Short to VSS

1.9

Capacitive-Load Stability Range

CLOAD

(Note 1)

250

ELECTRICAL CHARACTERISTICS

(VDD = +3V, VSS = VCM = 0V, VOUT_ = VDD/2, RL to VDD/2, CL = 15pF, TA = TMIN to TMAX, unless otherwise specified.) (Note 2)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

MAX4036/MAX4038, guaranteed by PSRR

test

1.4

3.6

Supply Voltage Range

VDD

MAX4037/MAX4039, guaranteed by PSRR

and line regulation tests

1.8

3.6

VDD = 1.4V

1.7

MAX4036

VDD = 3.6V

1.8

VDD = 1.8V

3.1

MAX4037

VDD = 3.6V

3.2

VDD = 1.4V

2.9

MAX4038

VDD = 3.6V

3.2

VDD = 1.8V

5.2

Supply Current

IDD

MAX4039

VDD = 3.6V

5.3

µA

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