MAX4038 datasheet(4/22 Pages) MAXIM

Part #	MAX4038

Description	Low IBIAS, 1.4V/800nA, Rail-to-Rail Op Amps with 1.2V Buffered Reference

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Manufacturer	MAXIM [Maxim Integrated Products]

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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

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

VDD = 1.4V

2.9

MAX4038

VDD = 3.6V

3.2

VDD = 1.4V

3.4

MAX4038A

VDD = 3.6V

3.7

VDD = 1.8V

5.2

Supply Current

IDD

MAX4039

VDD = 3.6V

5.3

µA

OPERATIONAL AMPLIFIERS

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

VDD = 1.4V

(MAX4036/MAX4038 only)

VSS

VDD -

0.4

VDD = 1.8V

VSS

VDD -

0.4

Input Common-Mode Voltage

Range

VCM

Guaranteed by

CMRR test

VDD = 3.3V

VSS

VDD -

0.2

V

VDD = 1.4V, VSS ≤ VCM ≤ (VDD - 0.5V)

(MAX4036/MAX4038 only)

44

VDD = 1.8V, VSS ≤ VCM ≤ (VDD - 0.4V)

50

Common-Mode Rejection Ratio

CMRR

VDD = 3.3V, VSS ≤ VCM ≤ (VDD - 0.3V)

52

dB

1.4V ≤ VDD ≤ 3.6V

(MAX4036/MAX4038 only)

60

Power-Supply Rejection Ratio

PSRR

1.8V ≤ VDD ≤ 3.6V

60

dB

RL = 100k

Ω, 50mV ≤ VOUT ≤ (VDD - 50mV)

75

Large-Signal Voltage Gain

AVOL

RL = 5k

Ω, 150mV ≤ VOUT ≤ (VDD - 150mV)

73

dB

RL = 100k

Ω

10

Output Voltage Swing High

VDD - VOH

RL = 5k

Ω

100

mV

RL = 100k

Ω

10

Output Voltage Swing Low

VOL - VSS

RL = 5k

Ω

100

mV

REFERENCE (MAX4037/MAX4039)

MAX4037EUT-T, MAX4039ETB,

MAX4039EUB

25

120

Reference Voltage Temperature

Coefficient

TCVREF

(Note 1)

MAX4039EBL-T

35

200

ppm/°C

Line Regulation

ΔVREF/

ΔVDD

VDD = 1.8V to 3.6V

0.6

%/V

0 ≤ ILOAD ≤ 100µA, sourcing

0.003

Load Regulation

ΔVREF/

ΔILOAD

-20µA ≤ ILOAD ≤ 0, sinking

0.015

%/µA

Capacitive-Load Stability Range

CLOAD

(Note 1)

0

250

pF

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.

Low IBIAS, +1.4V/800nA, Rail-to-Rail Op Amps

with +1.2V Buffered Reference

4

_______________________________________________________________________________________

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