Analog Devices AD8014 Datasheet

400 MHz Low Power

1

V

OUT

AD8014

–V

S

+IN

2

34

5

+V

S

–IN

a

FEATURES
Low Cost
Low Power: 1.15 mA Max for 5 V Supply
High Speed

400 MHz, –3 dB Bandwidth (G = +1)

4000 V/␮s Slew Rate
60 ns Overload Recovery
Fast Settling Time of 24 ns
Drive Video Signals on 50 ⍀ Lines
Very Low Noise

3.5 nV/√Hz and 5 pA/√Hz

5 nV/√Hz Total Input Referred Noise @ G = +3 w/500 ⍀

Feedback Resistor
Operates on +4.5 V to +12 V Supplies
Low Distortion –70 dB THD @ 5 MHz
Low, Temperature-Stable DC Offset
Available in SOIC-8 and SOT-23-5

APPLICATIONS
Photo-Diode Preamp
Professional and Portable Cameras
Hand Sets
DVD/CD
Handheld Instruments
A-to-D Driver
Any Power-Sensitive High Speed System

PRODUCT DESCRIPTION

The AD8014 is a revolutionary current feedback operational
amplifier that attains new levels of combined bandwidth, power,
output drive and distortion. Analog Devices, Inc. uses a propri­etary circuit architecture to enable the highest performance
amplifier at the lowest power. Not only is it technically superior,
but is low priced, for use in consumer electronics. This general
purpose amplifier is ideal for a wide variety of applications
including battery operated equipment.

High Performance Amplifier

AD8014

FUNCTIONAL BLOCK DIAGRAMS

SOIC-8 (R)

NC

1

–IN

2

+IN

3

4

–V

S

NC = NO CONNECT

AD8014

NC

8

+V

S

7

V

6

OUT

NC

5

The AD8014 is a very high speed amplifier with 400 MHz,

–3 dB bandwidth, 4000 V/µs slew rate, and 24 ns settling time.

The AD8014 is a very stable and easy to use amplifier with fast
overload recovery. The AD8014 has extremely low voltage and
current noise, as well as low distortion, making it ideal for use
in wide-band signal processing applications.

For a current feedback amplifier, the AD8014 has extremely
low offset voltage and input bias specifications as well as low

drift. The input bias current into either input is less than 15 µA
at +25°C with a typical drift of less than 50 nA/°C over the

industrial temperature range. The offset voltage is 5 mV max

with a typical drift less than 10 µV/°C.

For a low power amplifier, the AD8014 has very good drive
capability with the ability to drive 2 V p-p video signals on

75 Ω or 50 Ω series terminated lines and still maintain more

than 135 MHz, 3 dB bandwidth.

SOT-23-5 (RT)

REV. B

Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone] World Wide Web Site: http://www.analog.com
Fax: [phone] © Analog Devices, Inc., 1999

AD8014–SPECIFICATIONS

(@ TA = +25ⴗC, VS = ⴞ5 V, RL = 150 ⍀, RF = 1 k⍀, Gain = +2, unless otherwise noted)

AD8014AR/RT

Parameter Conditions Min Typ Max Units

DYNAMIC PERFORMANCE

–3 dB Bandwidth Small Signal G = +1, V

G = –1, V

–3 dB Bandwidth Large Signal V

0.1 dB Small Signal Bandwidth V

0.1 dB Large Signal Bandwidth V
Slew Rate, 25% to 75%, V

= 4 V Step R

O

= 2 V p-p 140 180 MHz

O

= 2 V p-p, R

V

O

= 2 V p-p, R

V

O

= 0.2 V p-p, R

O

= 2 V p-p, R

O

= 1 kΩ, RF = 500 Ω 4600 V/µs

L

= 1 kΩ 2800 V/µs

R

L

G = –1, R
G = –1, R

Settling Time to 0.1% G = +1, V

= 0.2 V p-p, R

O

= 0.2 V p-p, R

O

= 500 Ω 170 210 MHz

F

= 500 Ω, RL = 50 Ω 130 MHz

F

= 1 kΩ 12 MHz

L

= 1 kΩ 20 MHz

L

= 1 kΩ, RF = 500 Ω 4000 V/µs

L

= 1 kΩ 2500 V/µs

L

= 2 V Step, R

O

= 1 kΩ 400 480 MHz

L

= 1 kΩ 120 160 MHz

L

= 1 kΩ 24 ns

L

Rise and Fall Time 10% to 90% 2 V Step 1.6 ns

G = –1, 2 V Step 2.8 ns

Overload Recovery to Within 100 mV 0 V to ±4 V Step at Input 60 ns

NOISE/HARMONIC PERFORMANCE

Total Harmonic Distortion f

SFDR f

= 5 MHz, VO = 2 V p-p, R

C

= 5 MHz, VO = 2 V p-p –51 dB

f

C

= 20 MHz, VO = 2 V p-p –45 dB

f

C

= 20 MHz, VO = 2 V p-p –48 dB

C

= 1 kΩ –68 dB

L

Input Voltage Noise f = 10 kHz 3.5 nV/√Hz
Input Current Noise f = 10 kHz 5 pA/√Hz

Differential Gain Error NTSC, G = +2, R

NTSC, G = +2, R

Differential Phase Error NTSC, G = +2, R

NTSC, G = +2, R

= 500 Ω 0.05 %

F

= 500 Ω, RL = 50 Ω 0.46 %

F

= 500 Ω 0.30 Degree

F

= 500 Ω, RL = 50 Ω 0.60 Degree

F

Third Order Intercept f = 10 MHz 22 dBm

DC PERFORMANCE

Input Offset Voltage 25mV

T

MIN–TMAX

26mV

Input Offset Voltage Drift 10 µV/°C
Input Bias Current +Input or –Input 5 15 µA
Input Bias Current Drift 50 nA/°C
Input Offset Current 5 ±µA
Open Loop Transresistance 800 1300 kΩ

INPUT CHARACTERISTICS

Input Resistance +Input 450 kΩ

Input Capacitance +Input 2.3 pF

Input Common-Mode Voltage Range ±3.8 ±4.1 V

Common-Mode Rejection Ratio V

= ±2.5 V –52 –57 dB

CM

OUTPUT CHARACTERISTICS

Output Voltage Swing R

Output Current V

= 150 Ω±3.4 ±3.8 V

L

= 1 kΩ±3.6 ±4.0 V

R

L

= ±2.0 V 40 50 mA

O

Short Circuit Current 70 mA
Capacitive Load Drive for 30% Overshoot 2 V p-p, R

= 1 kΩ, RF = 500 Ω 40 pF

L

POWER SUPPLY

Operating Range ±2.25 ±5 ±6.0 V

Quiescent Current 1.15 1.3 mA

Power Supply Rejection Ratio ±4 V to ±6 V –55 –58 dB

Specifications subject to change without notice.

–2– REV. B

AD8014

SPECIFICATIONS

Parameter Conditions Min Typ Max Units

DYNAMIC PERFORMANCE

–3 dB Bandwidth Small Signal G = +1, V

–3 dB Bandwidth Large Signal V

0.1 dB Small Signal Bandwidth V

0.1 dB Large Signal Bandwidth V
Slew Rate, 25% to 75%, V

Settling Time to 0.1% G = +1, V
Rise and Fall Time 10% to 90% 2 V Step 1.9 ns

Overload Recovery to Within 100 mV 0 V to ±2 V Step at Input 60 ns

NOISE/HARMONIC PERFORMANCE

Total Harmonic Distortion f

SFDR f

Input Voltage Noise f = 10 kHz 3.5 nV/√Hz
Input Current Noise f = 10 kHz 5 pA/√Hz

Differential Gain Error NTSC, G = +2, R

Differential Phase Error NTSC, G = +2, R

Third Order Intercept f = 10 MHz 22 dBm

DC PERFORMANCE

Input Offset Voltage 25mV

Input Offset Voltage Drift 10 µV/°C
Input Bias Current +Input or –Input 5 15 µA
Input Bias Current Drift 50 nA/°C
Input Offset Current 5 ±µA
Open Loop Transresistance 750 1300 kΩ

INPUT CHARACTERISTICS

Input Resistance +Input 450 kΩ

Input Capacitance +Input 2.3 pF
Input Common-Mode Voltage Range 1.2 1.1 to 3.9 3.8 V
Common-Mode Rejection Ratio V

OUTPUT CHARACTERISTICS

Output Voltage Swing R

Output Current V
Short Circuit Current 70 mA
Capacitive Load Drive for 30% Overshoot 2 V p-p, R

POWER SUPPLY

Operating Range 4.5 5 12 V
Quiescent Current 1.0 1.15 mA
Power Supply Rejection Ratio 4 V to 5.5 V –55 –58 dB

Specifications subject to change without notice.

(@ TA = +25ⴗC, VS = +5 V, RL = 150 ⍀, RF = 1 k⍀, Gain = +2, unless otherwise noted)

AD8014AR/RT

= 2 V Step R

O

= 0.2 V p-p, R

O

G = –1, V

= 2 V p-p 75 100 MHz

O

= 2 V p-p, R

V

O

= 2 V p-p, R

V

O

= 0.2 V p-p, R

O

= 2 V p-p 20 MHz

O

= 1 kΩ, RF = 500 Ω 3900 V/µs

L

= 1 kΩ 1100 V/µs

R

L

G = –1, R
G = –1, R

= 0.2 V p-p, R

O

= 500 Ω 90 115 MHz

F

= 500 Ω, RL = 75 Ω 100 MHz

F

= 1 kΩ 10 MHz

L

= 1 kΩ, RF = 500 Ω 1800 V/µs

L

= 1 kΩ 1100 V/µs

L

= 2 V Step, R

O

= 1 kΩ 345 430 MHz

L

= 1 kΩ 100 135 MHz

L

= 1 kΩ 24 ns

F

G = –1, 2 V Step 2.8 ns

= 5 MHz, VO = 2 V p-p, R

C

= 5 MHz, VO = 2 V p-p –51 dB

f

C

= 20 MHz, VO = 2 V p-p –45 dB

f

C

= 20 MHz, VO = 2 V p-p –47 dB

C

= 500 Ω 0.06 %

F

NTSC, G = +2, R

NTSC, G = +2, R

T

MIN–TMAX

= 1.5 V to 3.5 V –52 –57 dB

CM

= 150 Ω to 2.5 V 1.4 1.1 to 3.9 3.6 V

L

= 1 kΩ to 2.5 V 1.2 0.9 to 4.1 3.8 V

R

L

= 1.5 V to 3.5 V 30 50 mA

O

= 1 kΩ, RF = 500 Ω 55 pF

L

= 500 Ω, RL = 50 Ω 0.05 %

F

= 500 Ω 0.03 Degree

F

= 500 Ω, RL = 50 Ω 0.30 Degree

F

= 1 kΩ –70 dB

L

26mV

–3–REV. B