LM7121 datasheet(6/19 Pages) NSC

6 / 19 page

+5V AC Electrical Characteristics

Unless otherwise specified, all limits guaranteed for T

J = 25˚C, V

+ = +5V, V− = 0V, V

CM = VO = V

+/2 and R

L > 1MΩ. Bold-

face limits apply at the temperature extremes.

Symbol

Parameter

Conditions

Typ

(Note 5)

LM7121I

Units

Limit

(Note 6)

Slew Rate

V = +2, RL = 1kΩ to

145

V/µs

(Note 8)

+/2, V

O = 1.8 VPP

GBW

Unity Gain-Bandwidth

L = 1k, to V

+/2

MHz

Phase Margin

L = 1k to V

+/2

Deg

f (−3 dB)

Bandwidth

L = 100Ω to V

+/2, A

V = +1

200

MHz

(Notes 9, 10)

L = 100Ω to V

+/2, A

V = +2

r,tf

Rise and Fall Time

V = +2, RL = 100Ω,8

(Note 10)

O = 0.2 VPP

T.H.D.

Total Harmonic Distortion

0.6 V

PP Output, RL = 150Ω,

0.067

V = +2, f = 1 MHz

0.6 V

PP Output, RL = 150Ω,

0.33

V = +2, f = 5 MHz

Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is in-

tended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics.

Note 2: Human body model, 1.5 k

Ω in series with 100 pF.

Note 3: Applies to both single-supply and split-supply operation. Continuous short circuit operation at elevated ambient temperature can result in exceeding the

maximum allowed junction temperature of 150˚C.

Note 4: The maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any ambient temperature is PD =

(TJ(max)–TA)/θJA. All numbers apply for packages soldered directly into a PC board.

Note 5: Typical Values represent the most likely parametric norm.

Note 6: All limits are guaranteed by testing or statistical analysis.

Note 7: Differential input voltage is measured at VS = ±15V.

Note 8: Slew rate is the average of the rising and fallng slew rates.

Note 9: Unity gain operation for ±5V and ±15V supplies is with a feedback network of 510

Ω and 3 pF in parallel (see the Application Information section). For +5V

single supply operation, feedback is a direct short from the output to the inverting input.

Note 10: AV = +2 operation with 2 kΩ resistors and 2 pF capacitor from summing node to ground.

Typical Performance Characteristics T

A= 25˚C, RL = 1MΩ. unless otherwise specified

Supply Current vs

Supply Voltage

DS012348-66

Supply Current vs

Temperature

DS012348-67

Input Offset Voltage

vs Temperature

DS012348-68

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