OPA378

OPA2378

www.ti.com

SBOS417D – JANUARY 2008 – REVISED OCTOBER 2009

ELECTRICAL CHARACTERISTICS: VS = +2.2V to +5.5V

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

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

OPA378, OPA2378

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

OFFSET VOLTAGE

Input Offset Voltage, OPA378

VOS

VCM = V–

20

50

μV

vs Temperature

dVOS/dT

0.1

0.25

μV/°C

Input Offset Voltage, OPA2378

20

70

µV

vs Temperature

dVOS/dT

-40°C to +125°C

0.25

0.4

µV/°C

–40°C to +85°C

0.15

0.25

µV/°C

vs Power Supply, OPA378

PSRR

VCM = 0V, VS = +2.2V to +5.5V

1.5

5

μV/V

over Temperature

VCM = 0V, VS = +2.2V to +5.5V

3

8

μV/V

vs Power Supply, OPA2378

VCM = 0V, VS = +2.2V to +5.5V

10

μV/V

over Temperature

VCM = 0V, VS = +2.2V to +5.5V

3

13

μV/V

Channel Separation (Dual Version)

At dc

135

dB

INPUT BIAS CURRENT

Input Bias Current, OPA378

IB

±150

±550

pA

Input Bias Current, OPA2378

±150

±670

pA

over Temperature, OPA378 and OPA2378

±2

nA

Input Offset Current, OPA378

IOS

±0.3

±1.1

nA

Input Offset Current, OPA2378

±0.3

±1.34

nA

NOISE

Input Voltage Noise

en

f = 0.1Hz to 10Hz, VS = +5.5V

0.4

μVPP

Input Voltage Noise Density

en

f = 1kHz

20

nV/

√Hz

Input Current Noise

in

f = 10Hz

200

fA/

√Hz

INPUT VOLTAGE RANGE

Common-Mode Voltage Range

VCM

(V–) – 0.05

(V+) + 0.05

V

Common-Mode Rejection Ratio

CMRR

(V–) – 0.05V < VCM < (V+) + 0.05V, VS = 5.5V

100

112

dB

(V–) – 0.05V < VCM < (V+) + 0.05V, VS = 2.2V

94

106

dB

over Temperature

(V–) – 0.05V < VCM < (V+) + 0.05V, VS = 5.5V

96

dB

(V–) – 0.05V < VCM < (V+) + 0.05V, VS = 2.2V

90

dB

INPUT CAPACITANCE

Differential

CIN

4

pF

Common-Mode

5

pF

OPEN-LOOP GAIN

Open-Loop Voltage Gain

AOL

50mV < VO < (V+) – 50mV, RL = 100kΩ

110

134

dB

100mV < VO < (V+) – 100mV, RL = 10kΩ

110

130

dB

over Temperature

100mV < VO < (V+) – 100mV, RL = 10kΩ

106

dB

FREQUENCY RESPONSE

Gain-Bandwidth Product

GBW

900

kHz

Slew Rate

SR

G = +1

0.4

V/

μs

Settling Time 0.1%

tS

VS = 5.5V, 2V Step, G = +1

7

μs

Settling Time 0.01%

tS

VS = 5.5V, 2V Step, G = +1

9

μs

Overload Recovery Time

VIN × Gain > VS

4

μs

THD + Noise

THD + N

VS = 5V, VO = 3VPP, G = +1, f = 1kHz

0.003

%

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