OPA4314 datasheet(3/36 Pages) TI1

Part #	OPA4314

Description	3-MHz, Low-Power, Low-Noise, RRIO, 1.8-V CMOS Operational Amplifier

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Manufacturer	TI1 [Texas Instruments]

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OPA314

OPA2314

OPA4314

www.ti.com

SBOS563F – MAY 2011 – REVISED AUGUST 2013

ELECTRICAL CHARACTERISTICS: VS = +1.8 V to +5.5 V

(1)

Boldface limits apply over the specified temperature range: TA = –40°C to +125°C.

At TA = +25 °C, RL = 10 kΩ connected to VS/2, VCM = VS/2, and VOUT = VS/2, unless otherwise noted.

OPA314, OPA2314, OPA4314

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

OFFSET VOLTAGE

VOS

Input offset voltage

VCM = (VS+) – 1.3 V

0.5

2.5

mV

dVOS/dT

vs Temperature

1

μV/°C

PSRR

vs power supply

VCM = (VS+) – 1.3 V

78

92

dB

Over temperature

74

dB

Channel separation, dc

At dc

10

µV/V

INPUT VOLTAGE RANGE

VCM

Common-mode voltage range

(V–) – 0.2

(V+) + 0.2

V

VS = 1.8 V to 5.5 V, (VS–) – 0.2 V < VCM < (VS+) – 1.3 V

75

96

dB

CMRR

Common-mode rejection ratio

VS = 5.5 V, VCM = –0.2 V to 5.7 V

(2)

66

80

dB

VS = 1.8 V, (VS–) – 0.2 V < VCM < (VS+) – 1.3 V

70

86

dB

Over temperature

VS = 5.5 V, (VS–) – 0.2 V < VCM < (VS+) – 1.3 V

73

90

dB

VS = 5.5 V, VCM = –0.2 V to 5.7 V

(2)

60

dB

INPUT BIAS CURRENT

IB

Input bias current

±0.2

±10

pA

Over temperature

±600

pA

IOS

Input offset current

±0.2

±10

pA

Over temperature

±600

pA

NOISE

Input voltage noise (peak-to-

f = 0.1 Hz to 10 Hz

5

μVPP

peak)

f = 10 kHz

13

nV/

√Hz

en

Input voltage noise density

f = 1 kHz

14

nV/

√Hz

in

Input current noise density

f = 1 kHz

5

fA/

√Hz

INPUT CAPACITANCE

Differential

VS = 5.0 V

1

pF

CIN

Common-mode

VS = 5.0 V

5

pF

OPEN-LOOP GAIN

VS = 1.8 V, 0.2 V < VO < (V+) – 0.2 V, RL = 10 kΩ

90

115

dB

VS = 5.5 V, 0.2 V < VO < (V+) – 0.2 V, RL = 10 kΩ

100

128

dB

AOL

Open-loop voltage gain

VS = 1.8 V, 0.5 V < VO < (V+) – 0.5 V, RL = 2 kΩ

(2)

90

100

dB

VS = 5.5 V, 0.5 V < VO < (V+) – 0.5 V, RL = 2 kΩ

(2)

94

110

dB

VS = 5.5 V, 0.2 V < VO < (V+) – 0.2 V, RL = 10 kΩ

90

110

dB

Over temperature

VS = 5.5 V, 0.5 V < VO < (V+) – 0.2 V, RL = 2 kΩ

100

dB

Phase margin

VS = 5.0 V, G = +1, RL = 10 kΩ

65

deg

(1)

Parameters with minimum or maximum specification limits are 100% production tested at +25ºC, unless otherwise noted. Over

temperature limits are based on characterization and statistical analysis.

(2)

Specified by design and characterization; not production tested.

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