ELANT EL2286CS, EL2286CN, EL2186CS, EL2186CN Datasheet

EL2186C, EL2286C

250MHz/3mA Current Mode Feedback Amp w/Disable

EL2186C, EL2286C

Features

• Single (EL2186C) and dual (EL2286C) topologies

• 3mA supply current (per amplifier)

• 250MHz -3dB bandwidth

• Low cost

• Fast disable

• Powers down to 0mA

• Single- and dual-supply operation down to ±1.5V

• 0.05%/0.05° diff. gain/diff. phase

into 150Ω

• 1200V/µs slew rate

• Large output drive current: 100mA (EL2186C) 55mA (EL2286C)

• Also available without disable in single (EL2180C), dual (EL2280C) and quad (EL2480C)

• Lower power EL2170C/EL2176C family also available (1mA/ 70MHz) in single, dual and quad

Applications

• Low power/battery applications

• HDSL amplifiers

• Video amplifiers

• Cable drivers

• RGB amplifiers

• Test equipment amplifiers

• Current to voltage converters

General Description

The EL2186C/EL2286C are single/dual current-feedback operational amplifiers which achieve a -3dB bandwidth of 250MHz at a gain of +1 while consuming only 3mA of supply current per amplifier. They will operate with dual supplies ranging from ±1.5V to ±6V, or from single supplies ranging from +3V to +12V. The EL2186C/EL2286C also include a disable/power-down feature which reduces current consumption to 0mA while placing the amplifier output in a high impedance state. In spite of its low supply current, the EL2286C can output 55mA while swinging to ±4V on ±5V supplies. The EL2186C can output 100mA with similar output swings. These attributes make the EL2186C/EL2286C excellent choices for low power and/or low voltage cable-driver, HDSL, or RGB applications.

For Single, Dual and Quad applications without disable, consider the EL2180C (8-Pin Single), EL2280C (8-Pin Dual) or EL2480C (14-Pin Quad). For lower power applications where speed is still a concern, consider the EL2170C/El2176C family which also comes in similar Single, Dual and Quad configurations. The EL2170C/EL2176C family provides a -3dB bandwidth of 70MHz while consuming 1mA of supply current per amplifier.

Connection Diagrams

EL2186C SO, P-DIP

EL2286C SO, P-DIP

Ordering Information

Part No. Temp. Range Package Outline #

EL2186CN -40°C to +85°C 8-Pin PDIP MDP0031

EL2186CS -40°C to +85°C 8-Pin SOIC MDP0027

EL2286CN -40°C to +85°C 14-Pin PDIP MDP0031

EL2286CS -40°C to +85°C 14-Pin SOIC MDP0027

Manufactured under U.S. Patent No. 5,418,495

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.

September 26, 2001

EL2186C, EL2286C

250MHz/3mA Current Mode Feedback Amp w/Disable

Absolute Maximum Ratings (T

Voltage between VS+ and VS- +12.6V

Common-Mode Input Voltage VS- to VS+

EL2186C, EL2286C

Differential Input Voltage ±6V

Current into +IN or -IN ±7.5mA

Internal Power Dissipation See Curves

Operating Ambient

= 25°C)

Temperature Range -40°C to +85°C

Operating Junction Temperature

Plastic Packages 150°C

Output Current (EL2186C) ±120mA

Output Current (EL2286C) ±60mA

Storage Temperature Range -65°C to +150°C

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.

DC Electrical Characteristics

VS = ±5V, R

Parameter Description Conditions Min Typ Max Unit

TCV

d+I

-I

d-I

CMRR Common Mode Rejection Ratio VCM = ±3.5V 45 50 dB

-ICMR - Input Current Common Mode Rejection VCM = ±3.5V 5 30 µA/V

PSRR Power Supply Rejection Ratio VS is moved from ±4V to ±6V 60 70 dB

-IPSR - Input Current Power Supply Rejection VS is moved from ±4V to ±6V 1 15 µA/V

CMIR Common Mode Input Range ±3.5 ±4.0 V

OUT, OFF

S(DIS)

= 150Ω, ENABLE = 0V, T

Input Offset Voltage 2.5 15 mV

Average Input Offset Voltage Drift Measured from T

VOS Matching EL2286C only 0.5 mV

+ Input Current 1.5 15 µA

+ IIN Matching EL2286C only 20 nA

- Input Current 16 40 µA

-IIN Matching EL2286C only 2 µA

Transimpedance V

+ Input Resistance V

+ Input Capacitance 1.2 pF

Output Voltage Swing VS = ±5 ±3.5 ±4.0 V

Output Current EL2186C only 80 100 mA

Output Current Disable V

Supply Current ENABLE = 2.0V, per Amplifier 3 6 mA

Supply Current (Disabled) ENABLE = 4.5V 0 50 µA

OUT(DIS)

Output Capacitance (Disabled) ENABLE = 4.5V 4.4 pF Enable Pin Input Resistance Measured at ENABLE = 2.0V, 4.5V 45 85 kΩ

Logic “1” Input Current Measured at ENABLE, ENABLE = 4.5V -0.04 µA

Logic “0” Input Current Measured at ENABLE, ENABLE = 0V -53 µA

DIS

Minimum Voltage at ENABLE to Disable 4.5 V

Maximum Voltage at ENABLE to Enable 2.0 V

= 25°C unless otherwise specified

= ±2.5V 120 300 kΩ

OUT

= ±3.5V 0.5 2 MΩ

VS = +5 Single-Supply, High 4.0 V

VS = +5 Single-Supply, Low 0.3 V

EL2286C only, per Amplifier 50 55 mA

±2V, AV = +1@25°C 10 µA

OUT

MIN

to T

MAX

5 µV/°C

EL2186C, EL2286C

250MHz/3mA Current Mode Feedback Amp w/Disable

AC Electrical Characteristics

VS = ±5V, RF = R

Parameter Description Conditions Min Typ Max Unit

-3dB BW -3dB Bandwidth AV = +1 250 MHz

-3dB BW -3dB Bandwidth AV = +2 180 MHz

0.1dB BW 0.1dB Bandwidth AV = +2 50 MHz

SR Slew Rate V

tr, t

OS Overshoot V

dG Differential Gain AV = +2, R

dP Differential Phase AV = +2, R

dG Differential Gain AV = +1, R

dP Differential Phase AV = +1, R

OFF

CS Channel Separation EL2286C only, f = 5MHz 85 dB

1. DC offset from 0V to 0.714V, AC amplitude 286mV

2. Measured from the application of the logic signal until the output voltage is at the 50% point between initial and final values.

= 750Ω, RL = 150Ω, ENABLE = 0V, T

Rise and Fall Time V

Propagation Delay V

0.1% Settling V

Turn-On Time AV = +2, VIN = +1V, R

Turn-Off Time AV = +2, VIN = +1V, R

= 25°C unless otherwise specified

= ±2.5V, AV = +2 600 1200 V/µs

OUT

= ±500 mV 1.5 ns

OUT

= ±500 mV 1.5 ns

OUT

= ±500 mV 3.0 %

OUT

= ±2.5V, AV = -1 15 ns

OUT

= 150Ω

= 500Ω

, f = 3.58MHz.

P-P

[1]

= 150Ω

0.05 %

0.05

0.01 %

[2]

0.01 °

40 100 ns

1500 2000 ns

EL2186C, EL2286C

Test Circuit (per Amplifier)

EL2186C, EL2286C

250MHz/3mA Current Mode Feedback Amp w/Disable

Simplified Schematic (per Amplifier)

EL2186C, EL2286C

Typical Performance Curves

EL2186C, EL2286C

250MHz/3mA Current Mode Feedback Amp w/Disable

Non-Inverting Frequency Response (Gain)

Inverting Frequency Response (Gain)

Non-Inverting Frequency Response (Phase)

Inverting Frequency Response (Phase)

Frequency Response for Various RF and R

Frequency Response for Various RL and C

Transimpedance (ROL) vs Frequency

PSRR and CMRR vs Frequency

Frequency Response for Various CIN-

EL2186C, EL2286C

250MHz/3mA Current Mode Feedback Amp w/Disable

EL2186C, EL2286C

Voltage and Current Noise vs Frequency

-3dB Bandwidth and Peaking vs Supply Voltage for Various Non-Inverting Gains

2nd and 3rd Harmonic Distortion vs Frequency

-3dB Bandwidth and Peaking vs Supply Voltage for Various Inverting Gains

Output Voltage Swing vs Frequency

Output Voltage Swing vs Supply Voltage

Supply Current vs Supply Voltage

Common-Mode Input Range vs Supply Voltage

Slew Rate vs Supply Voltage

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