LM7121IMSLASHNOPB datasheet(8/29 Pages) TI1

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LM7121

SNOS750A – AUGUST 1999 – REVISED OCTOBER 2014

www.ti.com

6.9 +5V DC Electrical Characteristics

Unless otherwise specified, all limits ensured for V

+ = +5V, V− = 0 V, V

CM = VO = V

+/2 and R

L > 1 MΩ. Boldface limits apply

at the temperature extremes.

LM7121I

PARAMETER

TEST CONDITIONS

TYP(1)

UNIT

LIMIT(2)

VOS

Input Offset Voltage

2.4

Input Bias Current

µA

IOS

Input Offset Current

0.04

µA

RIN

Common Mode

2.6

Input Resistance

Differential Mode

3.4

CIN

Input Capacitance

Common Mode

2.3

CMRR

Common Mode Rejection Ratio

≤ VCM ≤ 3V

+PSRR

Positive Power Supply Rejection Ratio

4.6V

≤ V+ ≤ 5V

−PSRR

Negative Power Supply Rejection Ratio

≤ V− ≤ 0.4V

3.5

V min

VCM

Input Common-Mode Voltage Range

CMRR 45 dB

1.5

V max

Large Signal Voltage Gain

RL = 2 kΩ to V

+/2

RL = 2 kΩ to V

+/2, High

3.7

RL = 2 kΩ to V

+/2, Low

1.3

Output Swing

RL = 150 Ω to V

+/2, High

3.48

RL = 150 Ω to V

+/2, Low

1.59

ISC

Output Short Circuit Current

Sourcing

Sinking

Supply Current

4.8

(1)

Typical Values represent the most likely parametric norm.

(2)

All limits are ensured by testing or statistical analysis.

6.10 +5V AC Electrical Characteristics

Unless otherwise specified, all limits ensured for V

+ = +5V, V− = 0 V, V

CM = VO = V

+/2 and R

L > 1 MΩ. Boldface limits apply

at the temperature extremes.

PARAMETER

TEST CONDITIONS

TYP(1)

LM7121I

UNIT

LIMIT(2)

AV = +2, RL = 1 kΩ to V

+/2,

Slew Rate(3)

145

V/µs

VO = 1.8 VPP

GBW

Unity Gain-Bandwidth

RL = 1k to V

+/2

MHz

Øm

Phase Margin

RL = 1k to V

+/2

Deg

RL = 100 Ω to V

+/2, A

V = +1

200

f (

−3 dB)

Bandwidth(4)(5)

MHz

RL = 100 Ω to V

+/2, A

V = +2

tr, tf

Rise and Fall Time(5)

AV = +2, RL = 100 Ω , VO = 0.2 VPP

0.6 VPP Output, RL = 150 Ω,

0.067%

AV = +2, f = 1 MHz

T.H.D.

Total Harmonic Distortion

0.6 VPP Output, RL = 150 Ω,

0.33%

AV = +2, f = 5 MHz

(1)

Typical Values represent the most likely parametric norm.

(2)

All limits are ensured by testing or statistical analysis.

(3)

Slew rate is the average of the rising and falling slew rates.

(4)

Unity gain operation for ±5 V and ±15 V supplies is with a feedback network of 510

Ω and 3 pF in parallel (see Application and

Implementation). For +5V single supply operation, feedback is a direct short from the output to the inverting input.

(5)

AV = +2 operation with 2 kΩ resistors and 2 pF capacitor from summing node to ground.

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