Analog Devices AD8001 d Datasheet

800 MHz, 50 mW

a

FEATURES
Excellent Video Specifications (R

Gain Flatness 0.1 dB to 100 MHz

0.01% Differential Gain Error

0.025 Differential Phase Error

Low Power

5.5 mA Max Power Supply Current (55 mW)

High Speed and Fast Settling

880 MHz, –3 dB Bandwidth (G = +1)
440 MHz, –3 dB Bandwidth (G = +2)
1200 V/s Slew Rate
10 ns Settling Time to 0.1%

Low Distortion

–65 dBc THD, f

= 5 MHz

C

33 dBm Third Order Intercept, F
–66 dB SFDR, f = 5 MHz

High Output Drive

70 mA Output Current
Drives Up to 4 Back-Terminated Loads (75  Each)

While Maintaining Good Differential Gain/Phase
Performance (0.05%/0.25)

APPLICATIONS
A-to-D Drivers
Video Line Drivers
Professional Cameras
Video Switchers
Special Effects
RF Receivers

GENERAL DESCRIPTION

The AD8001 is a low power, high speed amplifier designed
to operate on ±5V supplies. The AD8001 features unique

9

6

G = +2

3

R

= 100

L

0

–3

GAIN – dB

VS = 5V
R

FB

= 150 , G = +2)

L

= 10 MHz

1

= 1k

VS = 5V

= 820

R

FB

Current Feedback Amplifier

AD8001

FUNCTIONAL BLOCK DIAGRAMS

8-Lead PDIP (N-8),

CERDIP (Q-8) and SOIC (R-8)

NC

1

–IN

2

+IN

3

4

V–

AD8001

NC = NO CONNECT

NC

8

V+

7

6

OUT

NC

5

transimpedance linearization circuitry. This allows it to drive
video loads with excellent differential gain and phase perfor­mance on only 50 mW of power. The AD8001 is a current
feedback amplifier and features gain flatness of 0.1 dB to 100 MHz
while offering differential gain and phase error of 0.01% and

0.025°. This makes the AD8001 ideal for professional video
electronics such as cameras and video switchers. Additionally,
the AD8001’s low distortion and fast settling make it ideal for
buffer high speed A-to-D converters.

The AD8001 offers low power of 5.5 mA max (V
can run on a single +12 V power supply, while being capable of
delivering over 70 mA of load current. These features make this
amplifier ideal for portable and battery-powered applications
where size and power are critical.

The outstanding bandwidth of 800 MHz along with 1200 V/µs
of slew rate make the AD8001 useful in many general-purpose
high speed applications where dual power supplies of up to ±6 V
and single supplies from 6 V to 12 V are needed. The AD8001 is
available in the industrial temperature range of –40°C to +85°C.

5-Lead SOT-23-5

(RT-5)

AD8001

1

V

OUT

2

–V

S

34

+IN

= ±5 V) and

S

+V

5

S

–IN

–6

–9

–12

10M 100M 1G

FREQUENCY – Hz

Figure 1. Frequency Response of AD8001

REV. D

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 that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective companies.

Figure 2. Transient Response of AD8001; 2 V Step, G = +2

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone] www.analog.com
Fax: [phone] © 2003 Analog Devices, Inc. All rights reserved.

AD8001–SPECIFICATIONS

(@ TA = + 25C, VS = 5 V, RL = 100 , unless otherwise noted.)

AD8001A

Model Conditions Min Typ Max Unit

DYNAMIC PERFORMANCE

–3 dB Small Signal Bandwidth, N Package G = +2, < 0.1 dB Peaking, R

G=+1, < 1 dB Peaking, R

= 750 Ω 350 440 MHz

F

= 1 kΩ 650 880 MHz

F

R Package G = +2, < 0.1 dB Peaking, RF = 681 Ω 350 440 MHz

G=+1, < 0.1 dB Peaking, R

RT Package G = +2, < 0.1 dB Peaking, R

G=+1, < 0.1 dB Peaking, R

= 845 Ω 575 715 MHz

F

= 768 Ω 300 380 MHz

F

= 1 kΩ 575 795 MHz

F

Bandwidth for 0.1 dB Flatness

N Package G = +2, R

= 750 Ω 85 110 MHz

F

R Package G = +2, RF = 681 Ω 100 125 MHz
RT Package G = +2, R

Slew Rate G = +2, V

= 768 Ω 120 145 MHz

F

= 2 V Step 800 1000 V/µs

O

G = –1, VO = 2 V Step 960 1200 V/µs

Settling Time to 0.1% G = –1, V

= 2 V Step 10 ns

O

Rise and Fall Time G = +2, VO = 2 V Step, RF = 649 Ω 1.4 ns

NOISE/HARMONIC PERFORMANCE

Total Harmonic Distortion fC = 5 MHz, VO = 2 V p-p –65 dBc

G = +2, R

= 100 Ω

L

Input Voltage Noise f = 10 kHz 2.0 nV/√Hz
Input Current Noise f = 10 kHz, +In 2.0 pA/√Hz

–In 18 pA/√Hz

Differential Gain Error NTSC, G = +2, R

= 150 Ω 0.01 0.025 %

L

Differential Phase Error NTSC, G = +2, RL = 150 Ω 0.025 0.04 Degree
Third Order Intercept f = 10 MHz 33 dBm
1 dB Gain Compression f = 10 MHz 14 dBm
SFDR f = 5 MHz –66 dB

DC PERFORMANCE

Input Offset Voltage 2.0 5.5 mV

T

MIN–TMAX

2.0 9.0 mV

Offset Drift 10 µV/°C
–Input Bias Current 5.0 25 ±µA

T

MIN–TMAX

35 ±µA

+Input Bias Current 3.0 6.0 ±µA

10 ±µA

Open-Loop Transresistance V

T

MIN–TMAX

= ±2.5 V 250 900 kΩ

O

T

MIN–TMAX

175 kΩ

INPUT CHARACTERISTICS

Input Resistance +Input 10 MΩ

–Input 50 Ω

Input Capacitance +Input 1.5 pF
Input Common-Mode Voltage Range 3.2 ±V
Common-Mode Rejection Ratio

Offset Voltage V
–Input Current VCM = ±2.5 V, T
+Input Current VCM = ±2.5 V, T

= ±2.5 V 50 54 dB

CM

MIN–TMAX

MIN–TMAX

0.3 1.0 µA/V

0.2 0.7 µA/V

OUTPUT CHARACTERISTICS

Output Voltage Swing R

= 150 Ω 2.7 3.1 ±V

L

Output Current RL = 37.5 Ω 50 70 mA
Short Circuit Current 85 110 mA

POWER SUPPLY

Operating Range ±3.0 ±6.0 V
Quiescent Current T

MIN–TMAX

5.0 5.5 mA

Power Supply Rejection Ratio +VS = +4 V to +6 V, –VS = –5 V 60 75 dB

= – 4 V to – 6 V, +VS = +5 V 50 56 dB

–V
–Input Current T
+Input Current T

Specifications subject to change without notice.

S

MIN–TMAX

MIN–TMAX

0.5 2.5 µA/V

0.1 0.5 µA/V

–2–

REV. D

AD8001

2.0

0
–50 80

1.5

0.5

–40

1.0

010–10–20–30 20 30 40 50 60 70

90

AMBIENT TEMPERATURE – C

MAXIMUM POWER DISSIPATION – W

8-LEAD

PDIP PACKAGE

TJ = +150C

5-LEAD

SOT-23-5 PACKAGE

8-LEAD

SOIC PACKAGE

8-LEAD

CERDIP PACKAGE

ABSOLUTE MAXIMUM RATINGS

Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12.6 V

Internal Power Dissipation @ 25°C

1

2

PDIP Package (N) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3 W

SOIC (R) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.8 W

8-Lead CERDIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 W

SOT-23-5 Package (RT) . . . . . . . . . . . . . . . . . . . . . . .0.5 W

Input Voltage (Common Mode) . . . . . . . . . . . . . . . . . . . . ±V

S

Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . ±1.2 V

Output Short Circuit Duration

.. . . . . . . . . . . . . . . . . . . . .Observe Power Derating Curves

Storage Temperature Range N, R . . . . . . . . . –65°C to +125°C

Operating Temperature Range (A Grade) . . . – 40°C to +85°C

Lead Temperature Range (Soldering 10 sec) . . . . . . . . . 300°C

NOTES

1

Stresses above those listed under Absolute Maximum Ratings may cause perma-

nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.

2

Specification is for device in free air:

8-Lead PDIP Package: θJA = 90°C/W
8-Lead SOIC Package: θJA = 155°C/W
8-Lead CERDIP Package: θJA = 110°C/W
5-Lead SOT-23-5 Package: θJA = 260°C/W

MAXIMUM POWER DISSIPATION

The maximum power that can be safely dissipated by the
AD8001 is limited by the associated rise in junction tempera­ture. The maximum safe junction temperature for plastic
encapsulated devices is determined by the glass transition tem­perature of the plastic, approximately 150°C. Exceeding this
limit temporarily may cause a shift in parametric performance
due to a change in the stresses exerted on the die by the package.
Exceeding a junction temperature of 175°C for an extended
period can result in device failure.

While the AD8001 is internally short circuit protected, this
may not be sufficient to guarantee that the maximum junction
temperature (150°C) is not exceeded under all conditions. To
ensure proper operation, it is necessary to observe the maximum
power derating curves.

Model Range Description Option Branding

AD8001AN –40°C to +85°C 8-Lead PDIP N-8
AD8001AQ –55°C to +125°C 8-Lead CERDIP Q-8
AD8001AR –40°C to +85°C 8-Lead SOIC R-8
AD8001AR-REEL –40°C to +85°C 13" Tape and REEL R-8
AD8001AR-REEL7 –40°C to +85°C 7" Tape and REEL R-8
AD8001ART-REEL –40°C to +85°C 13" Tape and REEL RT-5 HEA
AD8001ART-REEL7 –40°C to +85°C 7" Tape and REEL RT-5 HEA
AD8001ACHIPS –40°C to +85°CDie Form
5962-9459301MPA

*

Standard Military Drawing Device.

CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the AD8001 features proprietary ESD protection circuitry, permanent damage may

*

occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.

REV. D

Figure 3. Plot of Maximum Power Dissipation vs.
Temperature

ORDERING GUIDE

Temperature Package Package

–55°C to +125°C 8-Lead CERDIP Q-8

WARNING!

ESD SENSITIVE DEVICE

–3–

AD8001

V

IN

HP8133A

PULSE

GENERATOR

TR/TF = 50ps

–Typical Performance Characteristics

806

0.001F

+V

806

50

S

AD8001

–V

S

0.1F

0.1F

0.001F

V

TO

OUT

TEKTRONIX
CSA 404 COMM.
SIGNAL
ANALYZER

RL = 100

5ns400mV

TPC 1. Test Circuit , Gain = +2

TPC 2. 1 V Step Response, G = +2

V

IN

LeCROY 9210

PULSE

GENERATOR

TR/TF = 350ps

TPC 4. 2 V Step Response, G = +2

909

0.001F

+V

S

0.1F

V
TEKTRONIX

CSA 404 COMM.
SIGNAL
ANALYZER

AD8001

0.1F

50

0.001F

–V

S

TPC 5. Test Circuit, Gain = +1

TO

OUT

RL = 100

0.5V

5ns

TPC 3. 2 V Step Response, G = +1

–4–

TPC 6. 100 mV Step Response, G = +1

REV. D

9

VALUE OF FEEDBACK RESISTOR (RF) – 

–3dB BANDWIDTH – MHz

1000

0

1000

600

200

600

400

500

800

900800700

R

PACKAGE

N

PACKAGE

VS = 5V
R

L

= 100

G = +2

–50

–70

–100

100k 100M10M1M10k

–80

–90

–60

FREQUENCY – Hz

HARMONIC DISTORTION – dBc

V

OUT

= 2V p-p

R

L

= 100

G = +2

5V SUPPLIES

SECOND HARMONIC

THIRD HARMONIC

VS = 5V

6

G = +2

3

R

= 100

L

0

–3

GAIN – dB

–6

–9

–12

10M 100M 1G

VS = 5V
R

= 1k

FB

FREQUENCY – Hz

R

FB

AD8001

= 820

–0.1

–0.2

–0.3

–0.4

–0.5

OUTPUT – dB

–0.6

–0.7

–0.8

–0.9

TPC 8. 0.1 dB Flatness, R Package (for N Package Add

Ω

to RF)

50

–50

–60

–70

–80

–90

HARMONIC DISTORTION – dBc

–100

–110

TPC 7. Frequency Response, G = +2

0.1

0

G = +2

= 100

R

L

= 50mV

V

IN

1M 10M 100M

V

= 2V p-p

OUT

= 1k

R

L

G = +2

SECOND HARMONIC

TPC 9. Distortion vs. Frequency, RL = 1 k

100k 100M10M1M10k

FREQUENCY – Hz

FREQUENCY – Hz

RF = 698

RF = 750

5V SUPPLIES

THIRD HARMONIC

RF =
649

Ω

TPC 10. –3 dB Bandwidth vs. R

TPC 11. Distortion vs. Frequency, RL = 100

0.08

G = +2

0.06

0.04

0.02

0.00

DIFF PHASE – Degrees

0.02

0.01

0.00

–0.01

DIFF GAIN – %

–0.02

= 806

R

F

1 AND 2 BACK TERMINATED

LOADS (150 AND 75)

0

2 BACK TERMINATED

LOADS (75)

1 BACK TERMINATED

LOAD (150)

IRE

F

Ω

100

TPC 12. Differential Gain and Differential Phase

REV. D

–5–