Analog Devices AD8055ART-REEL7, AD8055ART-REEL, AD8055AR-REEL7, AD8055AR-REEL, AD8055AR Datasheet

a		Low Cost, 300 MHz
		Voltage Feedback Amplifiers
		AD8055/AD8056

FEATURES

Low Cost Single (AD8055) and Dual (AD8056) Easy to Use Voltage Feedback Architecture High Speed

300 MHz, –3 dB Bandwidth (G = +1)

1400 V/ s Slew Rate

20 ns Settling to 0.1%

Low Distortion: –72 dBc @ 10 MHz Low Noise: 6 nV/√Hz

Low DC Errors: 5 mV Max VOS, 1.2 A Max IB

Small Packaging

AD8055 Available in SOT-23-5 AD8056 Available in 8-Lead microSOIC

Excellent Video Specifications (RL = 150 , G = +2)

Gain Flatness 0.1 dB to 40 MHz 0.01% Differential Gain Error 0.02 Differential Phase Error

Drives Four Video Loads (37.5 ) with 0.02% and 0.1 Differential Gain and Differential Phase

Low Power, 5 V Supplies

5 mA Typ/Amplifier Power Supply Current High Output Drive Current: Over 60 mA

APPLICATIONS

Imaging

Photodiode Preamp

Video Line Driver

Differential Line Driver

Professional Cameras

Video Switchers

Special Effects

A-to-D Driver

Active Filters

PRODUCT DESCRIPTION

The AD8055 (single) and AD8056 (dual) voltage feedback amplifiers offer bandwidth and slew rate typically found in current feedback amplifiers. Additionally, these amplifiers are easy to use and available at a very low cost.

Despite their low cost, the AD8055 and AD8056 provide excellent overall performance. For video applications, their differential gain and phase error are 0.01% and 0.02° into a 150 Ω load, and 0.02% and 0.1° while driving four video loads (37.5 Ω). Their 0.1 dB flatness out to 40 MHz, wide bandwidth out to 300 MHz, along with 1400 V/µs slew rate and 20 ns settling time, make them useful for a variety of high-speed applications.

FUNCTIONAL BLOCK DIAGRAMS

	N-8 and R-8
NC 1		AD8055	NC
		8
–IN	2	7	+VS
+IN	3	6	VOUT
–VS	4	5	NC
		(Not to Scale)

NC = NO CONNECT

SOT-23-5 (RT)
		AD8055	+VS
VOUT	1	5
–VS	2
+IN	3	4	–IN
		(Not to Scale)

N-8, R-8, microSOIC (RM)
OUT1 1		AD8056	+VS
		8
–IN1	2	7	OUT
+IN1	3	6	–IN2
–VS	4	5	+IN2
		(Not to Scale)

The AD8055 and AD8056 require only 5 mA typ/amplifier of supply current and operate on dual ±5 V or single +12 V power supply, while being capable of delivering over 60 mA of load current. All this is offered in a small 8-lead plastic DIP, 8-lead SOIC packages, 5-lead SOT-23-5 package (AD8055) and an 8-lead microSOIC package (AD8056). These features make the AD8055/AD8056 ideal for portable and battery powered applications where size and power are critical. These amplifiers are available in the industrial temperature range of –40°C to +85°C.

	5
	4		RC			VOUT = 100mV p-p
		VIN	VOUT			RL = 100
	3	50
				G = +1
	2		RL	R	F	= 0
			RF
			RS	RC = 100
dB	1						G = +2
							RF = 402
–	0
GAIN
	–1
	–2		G = +10
	–3		RF = 909
	–4		G = +5
			RF = 1000
	–5	1M	10M			100M
	0.3M						1G

FREQUENCY – Hz

Figure 1. Frequency Response

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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.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: [phone]	www.analog.com
Fax: [phone]	© Analog Devices, Inc., 2001

	(@ TA = 25 C, VS = 5 V, RF = 402 , RL = 100 , Gain = +2,
AD8055/AD8056–SPECIFICATIONS unless otherwise noted)
Model			AD8055A/AD8056A
	Conditions		Min	Typ	Max	Unit
DYNAMIC PERFORMANCE
–3 dB Bandwidth	G = +1, VO = 0.1 V p-p		220	300		MHz
	G = +1, VO = 2 V p-p		125	150		MHz
	G = +2, VO = 0.1 V p-p		120	160		MHz
	G = +2, VO = 2 V p-p		125	150		MHz
Bandwidth for 0.1 dB Flatness	VO = 100 mV p-p		25	40		MHz
Slew Rate	G = +1, VO = 4 V Step		1000	1400		V/µs
	G = +2, VO = 4 V Step		750	840		V/µs
Settling Time to 0.1%	G = +2, VO = 2 V Step			20		ns
Rise and Fall Time, 10% to 90%	G = +1, VO = 0.5 V Step			2		ns
	G = +1, VO = 4 V Step			2.7		ns
	G = +2, VO = 0.5 V Step			2.8		ns
	G = +2, VO = 4 V Step			4		ns
NOISE/HARMONIC PERFORMANCE	fC = 10 MHz, VO = 2 V p-p, RL = 1 kΩ
Total Harmonic Distortion				–72		dBc
	fC = 20 MHz, VO = 2 V p-p, RL = 1 kΩ			–57		dBc
Crosstalk, Output to Output (AD8056)	f = 5 MHz, G = +2			–60		dB
Input Voltage Noise	f = 100 kHz			6		nV/√Hz
Input Current Noise	f = 100 kHz			1		pA/√Hz
Differential Gain Error	NTSC, G = +2, RL = 150 Ω			0.01		%
	RL = 37.5 Ω			0.02		%
Differential Phase Error	NTSC, G = +2, RL = 150 Ω			0.02		Degree
	RL = 37.5 Ω			0.1		Degree
DC PERFORMANCE
Input Offset Voltage				3	5	mV
	TMIN–TMAX				10	mV
Offset Drift				6		µV/°C
Input Bias Current				0.4	1.2	µA
	TMIN–TMAX			1		µA
Open Loop Gain	VO = ±2.5 V		66	71		dB
	TMIN–TMAX		64			dB
INPUT CHARACTERISTICS						MΩ
Input Resistance				10
Input Capacitance				2		pF
Input Common-Mode Voltage Range	VCM = ±2.5 V			3.2		±V
Common-Mode Rejection Ratio				82		dB
OUTPUT CHARACTERISTICS	RL = 150 Ω					±V
Output Voltage Swing			2.9	3.1
Output Current1	VO = ±2.0 V		55	60		mA
Short Circuit Current1				110		mA
POWER SUPPLY			±4.0	±5.0	±6.0
Operating Range						V
Quiescent Current	AD8055			5.4	6.5	mA
	TMIN–TMAX				7.3	mA
	AD8056			10	12	mA
	TMIN–TMAX				13.3	mA
Power Supply Rejection Ratio	+VS = +5 V to +6 V, –VS = –5 V		66	72		dB
	–VS = –5 V to –6 V, +VS = +5 V		69	86		dB
OPERATING TEMPERATURE RANGE			–40		+85	°C

NOTES

1Output current is limited by the maximum power dissipation in the package. See the power derating curves.

Specifications subject to change without notice.

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AD8055/AD8056

ABSOLUTE MAXIMUM RATINGS1
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . 13.2 V
Internal Power Dissipation2
Plastic DIP Package (N) . . . . . . . . . . . . .	. . . . . . . . . 1.3 W
Small Outline Package (R) . . . . . . . . . . . . .	. . . . . . . . 0.8 W
SOT-23-5 Package (RT) . . . . . . . . . . . . . .	. . . . . . . . 0.5 W
microSOIC Package (RM) . . . . . . . . . . . . .	. . . . . . . . 0.6 W
Input Voltage (Common Mode) . . . . . . . . . .	. . . . . . . . . ±VS
Differential Input Voltage . . . . . . . . . . . . . . .	. . . . . . . ±2.5 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

1Stresses above those listed under Absolute Maximum Ratings may cause permanent 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.

2Specification is for device in free air:

8-Lead Plastic DIP Package: θJA = 90°C/W 8-Lead SOIC Package: θJA = 155°C/W 5-Lead SOT-23-5 Package: θJA = 240°C/W 8-Lead microSOIC Package: θJA = 200°C/W

MAXIMUM POWER DISSIPATION

The maximum power that can be safely dissipated by the AD8055/ AD8056 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 AD8055/AD8056 are 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.

	2.0
– Watts		8-LEAD PLASTIC DIP PACKAGE
	1.5
POWER DISSIPATION
	8-LEAD SOIC					TJ = 150 C
	PACKAGE
	1.0
	SOIC
MAXIMUM
	0.5
	SOT-23-5
	0	0	10	20	30 40 50	60 70	80	90
	–50 –40 –30 –20 –10
	AMBIENT TEMPERATURE – C

Figure 2. Plot of Maximum Power Dissipation vs. Temperature for AD8055/AD8056

ORDERING GUIDE

Model	Temperature Range	Package Description	Package Option	Branding Code
AD8055AN	–40°C to +85°C	Plastic DIP	N-8
AD8055AR	–40°C to +85°C	Small Outline Package (SOIC)	SO-8
AD8055AR-REEL	–40°C to +85°C	13" Tape and Reel	SO-8
AD8055AR-REEL7	–40°C to +85°C	7" Tape and Reel	SO-8
AD8055ART-REEL	–40°C to +85°C	13" Tape and Reel	RT-5	H3A
AD8055ART-REEL7	–40°C to +85°C	7" Tape and Reel	RT-5	H3A
AD8056AN	–40°C to +85°C	Plastic DIP	N-8
AD8056AR	–40°C to +85°C	Small Outline Package (SOIC)	SO-8
AD8056AR-REEL	–40°C to +85°C	13" Tape and Reel	SO-8
AD8056AR-REEL7	–40°C to +85°C	7" Tape and Reel	SO-8
AD8056ARM	–40°C to +85°C	microSOIC	RM-8	H5A
AD8056ARM-REEL	–40°C to +85°C	13" Tape and Reel	RM-8	H5A
AD8056ARM-REEL7	–40°C to +85°C	7" Tape and Reel	RM-8	H5A

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 AD8055/AD8056 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.

WARNING!

ESD SENSITIVE DEVICE

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–3–

AD8055/AD8056–Typical Performance Characteristics

			+VS	4.7 F
				0.01 F
				0.001 F
HP8130A	VIN	100	7
PULSE		3		VOUT
GENERATOR	50		AD8055
TR/TF = 1ns				6
		2	4	100
				4.7 F
				0.01 F
				0.001 F
			–VS
TPC 1. Test Circuit, G = +1, RL = 100 Ω

		402
		+VS	4.7 F
			0.01 F
			0.001 F
HP8130A	VIN 402
PULSE		7
	2
GENERATOR
TR/TF = 0.67ns	57	AD8055	6
	3	4	VOUT	100
			4.7 F
			0.01 F
			0.001 F
		–VS
TPC 4. Test Circuit, G = –1, RL = 100 Ω

TPC 2. Small Step Response, G = +1		TPC 5. Small Step Response, G = –1

TPC 3. Large Step Response, G = +1

TPC 6. Large Step Response, G = –1

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