EL2228CS datasheet(3/12 Pages) ELANTEC

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EL2228C - Preliminary

Dual Low Noise Amplifier

Electrical Characteristics

VS+= +5V, VS - = -5V, RL = 500Ω and CL = 3pF to 0V, RF = 420Ω & TA = 25°C unless otherwise specified.

Parameter

Description

Condition

Min

Typ

Max

Unit

Input Characteristics

VOS

Input Offset Voltage

VCM = 0V

0.6

TCVOS

Average Offset Voltage Drift

[1]

4.9

µV/°C

Input Bias Current

VCM = 0V

-9

-4.5

-1

µA

RIN

Input Impedance

Ω

CIN

Input Capacitance

1.2

CMIR

Common-Mode Input Range

-4.7

+3.4

CMRR

Common-Mode Rejection Ratio

for VIN from -4.7V to +3.4V

for VIN from -2V to +2V

AVOL

Open-Loop Gain

-2.5V

≤ VOUT ≤ 2.5V

Voltage Noise

f = 100kHz

4.7

nV/

√Hz

Current Noise

f = 100kHz

1.2

pA/

√Hz

Output Characteristics

VOL

Output Swing Low

RL = 500Ω

-3.8

-3.5

RL = 250Ω

-3.7

-3.5

VOH

Output Swing High

RL = 500Ω

3.5

3.7

RL = 250Ω

3.5

3.6

ISC

Short Circuit Current

RL = 10Ω

100

Power Supply Performance

PSRR

Power Supply Rejection Ratio

VS is moved from ±4.5V to ±5.5V

Supply Current (Per Amplifier)

No load

3.5

4.5

5.5

Dynamic Performance

Slew Rate [2]

±2.5V square wave, measured 25%-75%

V/µs

Settling to +0.1% (AV = +1)

(AV = +1), VO = 2V step

-3dB Bandwidth

MHz

HD2

2nd Harmonic Distortion

f = 1MHz, VO = 2VP-P, RL = 500Ω, AV = 2

-90

dBc

f = 1MHz, VO = 2VP-P, RL = 150Ω, AV = 2

-71

dBc

HD3

3rd Harmonic Distortion

f = 1MHz, VO = 2VP-P, RL = 500Ω, AV = 2

-99

dBc

f = 1MHz, VO = 2VP-P, RL = 150Ω, AV = 2

-69

dBc

1. Measured over operating temperature range

2. Slew rate is measured on rising and falling edges

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