ELANT EL2074CS-T7, EL2074CS, EL2074CN Datasheet

EL2074C

400MHz GBWP Gain-of-2 Stable Operational Amplifier

EL2074C

Features

• 400MHz gain-bandwidth product

• Gain-of-2 stable

• Ultra low video distortion =

0.01%/0.015° @NTSC/PAL

• Conventional voltage-feedback
topology

• Low offset voltage = 200µV

• Low bias current = 2µA

• Low offset current = 0.1µA

• Output current = 50mA over
temperature

• Fast settling = 13ns to 0.1%

• Low distortion = -55dB HD2, ------

-70dB HD3 @20MHz, 2VPP, AV =
+2

Applications

• High resolution video

• Active filters/integrators

• High-speed signal processing

• ADC/DAC buffers

• Pulse/RF amplifiers

• Pin diode receivers

• Log amplifiers

• Photo multiplier amplifiers

• High speed sample-and-holds

General Description

The EL2074C is a precision voltage-feedback amplifier featuring a
400MHz gain-bandwidth product, fast settling time, excellent differ­ential gain and differential phase performance, and a minimum of
50mA output current drive over temperature.

The EL2074C is gain-of-2 stable with a -3dB bandwidth of 400MHz
at AV = +2. It has a very low 200µV of input offset voltage, only 2µA
of input bias current, and a fully symmetrical differential input. Like
all voltage-feedback operational amplifiers, the EL2074C allows the
use of reactive or non-linear components in the feedback loop. This
combination of speed and versatility makes the EL2074C the ideal
choice for all op-amp applications at a noise gain of 2 or greater
requiring high speed and precision, including active filters, integra­tors, sample-and-holds, and log amps. The low distortion, high output
current, and fast settling makes the EL2074C an ideal amplifier for
signal-processing and digitizing systems.

Connection Diagram

Ordering Information

1

Part No. Package Tape & Reel Outline #

EL2074CN 8-Pin PDIP - MDP0031

EL2074CS 8-Pin SO - MDP0027

EL2074CS-T7 8-Pin SO 7” MDP0027

EL2074CS-T13 8-Pin SO 13” MDP0027

Note: All information contained in this data sheet has been carefully checked and is believed to be accurate as of the date of publication; however, this data sheet cannot be a “controlled document”. Current revisions, if any, to these
specifications are maintained at the factory and are available upon your request. We recommend checking the revision level before finalization of your design documentation.

© 2001 Elantec Semiconductor, Inc.

NC

2

IN-

3

IN+

4

V-

(8-Pin SO & 8-Pin PDIP)

-

+

EL2074C

8

NC

7

V+

6

OUT

5

NC

September 26, 2001

EL2074C

400MHz GBWP Gain-of-2 Stable Operational Amplifier

EL2074C

Absolute Maximum Ratings (T

Supply Voltage (VS) ±7V

Output Current Output is short-circuit protected to ground, however,
maximum reliability is obtained if I

Common-Mode Input ±V

Differential Input Voltage 5V
Thermal Resistance (PDIP) θ

does not exceed 70mA.

OUT

= 25°C)

A

= 95°C/W

JA

Thermal Resistance (SO) θ

Operating Temperature 0°C to +75°C

Junction Temperature 175°C

S

Storage Temperature -60°C to +150°C

Note: See EL2071/EL2171 for Thermal Impedance curves

= 175°C/W

JA

Important Note:

All parameters having Min/Max specifications are guaranteed. Typ values are for information purposes only. Unless otherwise noted, all tests are at the
specified temperature and are pulsed tests, therefore: TJ = TC = TA.

Open Loop DC Electrical Characteristics

VS = ±5V, R

V

TCV

I

B

I

OS

PSRR Power Supply Rejection Ratio

CMRR Common Mode Rejection Ratio

I

S

RIN (diff) R

CIN (diff) CIN (Differential) Open-Loop 25°C 1 pF

RIN (cm) R

CIN (cm) CIN (Common-Mode) 25°C 1 pF

R

CMIR Common-Mode Input

I

OUT

V

V

V

A

A

eN@ > 1MHz Noise Voltage 1MHz to 100MHz 25°C 2.3 nV/√Hz
iN@ > 100kHz Noise Current 100kHz to 100MHz 25°C 3.2 pA/√Hz

= 100Ω, unless otherwise specified.

L

Parameter Description Test Conditions Temp Min Typ Max Unit

OS

OS

Input Offset Voltage VCM = 0V 25°C 0.2 1.5 mV

T

Average Offset

, T

MIN

[1]

MAX

All 8 µV/°C

3 mV

Voltage Drift

Input Bias Current VCM = 0V All 2 6 µA

Input Offset Current VCM = 0V 25°C 0.1 1 µA

T

, T

MIN

[2]

[3]

MAX

All 60 80 dB

All 65 90 dB

2 µA

Supply Current - Quiescent No Load 25°C 21 25 mA

T

OUT

, T

MIN

(Differential) Open-Loop 25°C 15 kΩ

IN

(Common-Mode) 25°C 1 MΩ

IN

MAX

Output Resistance 25°C 20 mΩ

25 mA

25°C ±3 ±3.5 V

Range

T

MIN

, T

MAX

±2.5 V

Output Current All 50 70 mA

OUT

100 Output Voltage Swing 100Ω All ±3 ±3.6 V

OUT

50 Output Voltage Swing 50Ω All ±2.5 ±3.4 V

OUT

100 Open-Loop Gain 100Ω 25°C 500 1000 V/V

VOL

50 Open-Loop Gain 50Ω 25°C 400 800 V/V

VOL

1. Measured from T

Output Voltage Swing No Load All ±3.5 ±4 V

T

MIN

, T

MIN

MAX

T

, T

MIN

MAX

, T

MAX

400 V/V

300 V/V

2. ±VCC = ±4.5V to 5.5V

3. ±VIN = ±2.5V, V

OUT

= 0V

2

EL2074C

400MHz GBWP Gain-of-2 Stable Operational Amplifier

Closed Loop AC Electrical Characteristics

VS = ±5V, AV = +2, RF = R

Parameter Description Test Conditions Temp Min Typ Max Unit

SSBW -3dB Bandwidth AV = -1 25°C 400 MHz

GBWP Gain-Bandwidth Product AV = +10 25°C 400 MHz

LSBWa -3dB Bandwidth V

LSBWb -3dB Bandwidth V

GFPL Peaking (<50MHz) V

GFPH Peaking (>50MHz) V

GFR Rolloff (<100MHz) V

LPD Linear Phase Deviation (<100MHz) V

PM Phase Margin AV = +2 25°C 50 °

tr1, tf1 Rise Time, Fall Time 0.4V Step, AV = +2 25°C 1.8 ns

tr2, tf2 Rise Time, Fall Time 5V Step, AV = +2 25°C 8 ns

ts1 Settling to 0.1% (AV = -1) 2V Step 25°C 13 ns

ts2 Settling to 0.01% (AV = -1) 2V Step 25°C 25 ns

OS Overshoot 2V Step 25°C 5 %

SR Slew Rate 2V Step All 275 400 V/µs

[2]

Distortion

HD2a 2nd Harmonic Distortion @ 10MHz, AV = +2 25°C -65 -55 dBc

HD2c 2nd Harmonic Distortion @ 20MHz, AV = +2 25°C -55 -45 dBc

HD3a 3rd Harmonic Distortion @ 10MHz, AV = +2 25°C -72 -60 dBc

HD3c 3rd Harmonic Distortion @ 20MHz, AV = +2 25°C -70 -60 dBc

Video Performance

dG Differential Gain NTSC 25°C 0.01 0.05 %

dP Differential Phase NTSC 25°C 0.015 0.05 °

dG Differential Gain 30MHz 25°C 0.1 %

dP Differential Phase 30MHz 25°C 0.1 °

VBW ±0.1 dB Bandwidth Flatness 25°C 25 50 MHz

1. Large-signal bandwidth calculated using LSBW = Slew Rate / 2π V

2. All distortion measurements are made with V

3. Video performance measured at AV = +2 with 2 times normal video level across R

terminated 50Ω load, i.e., 0–100 IRE, 40IREpp giving a 1VPP video signal across the 50Ω load. For other values of R

= 250Ω, C

G

(V

= 0.4VPP) AV = +2 25°C 250 400 MHz

OUT

= 3pF, R

F

= 100Ω unless otherwise specified.

L

T

MIN

, T

MAX

250 MHz

AV = +5 25°C 100 MHz

AV = +10 25°C 40 MHz

[1]

= 2V

OUT

PP

[1]

= 5V

OUT

PP

= 0.4V

OUT

OUT

OUT

OUT

[3]

= 2VPP, R

OUT

= 0.4V

= 0.4V

= 0.4V

= 100Ω

L

PP

PP

PP

PP

PEAK

All 43 63 MHz

All 17 25 MHz

25°C 0 1 dB

T

MIN

, T

MAX

1 dB

25°C 0 2 dB

T

MIN

, T

MAX

2 dB

25°C 0.1 0.5 dB

T

MIN

, T

MAX

0.5 dB

All 1 1.8 °

T

, T

MIN

MAX

T

, T

MIN

MAX

= 100Ω. This corresponds to standard video levels across a back-

L

, see curves

L

-45 dBc

-60 dBc

EL2074C

pp

pp

pp

pp

3

EL2074C

400MHz GBWP Gain-of-2 Stable Operational Amplifier

EL2074C

Typical Performance Curves

Non-Inverting Frequency
Response

Open Loop Gain and Phase Output Voltage Swing vs

PSRR, CMRR, and Closed-Loop
RO vs Frequency

Inverting Frequency Response Frequency Response for Various

Frequency

2nd and 3rd Harmonic
Distortion vs Frequency

RLs

Equivalent Input Noise

2-Tone, 3rd Order
Intermodulation Intercept

4