Analog Devices AD849SQ-883B, AD849SQ, AD849JR, AD849JN, AD849AQ Datasheet

a	High Speed, Low Power
	Monolithic Op Amp

FEATURES

725 MHz Gain Bandwidth – AD849

175 MHz Gain Bandwidth – AD848

4.8 mA Supply Current

300 V/ms Slew Rate

80 ns Settling Time to 0.1% for a 10 V Step – AD849 Differential Gain: AD848 = 0.07%, AD849 = 0.08% Differential Phase: AD848 = 0.088, AD849 = 0.048

Drives Capacitive Loads

DC PERFORMANCE

3 nV/ÖHz Input Voltage Noise – AD849

85 V/mV Open Loop Gain into a 1 kV Load – AD849

1 mV max Input Offset Voltage

Performance Specified for 65 V and 615 V Operation

Available in Plastic, Hermetic Cerdip and Small Outline Packages. Chips and MIL-STD-883B Parts Available.

Available in Tape and Reel in Accordance with EIA-481A Standard

APPLICATIONS

Cable Drivers

8- and 10-Bit Data Acquisition Systems

Video and RF Amplification

Signal Generators

PRODUCT DESCRIPTION

The AD848 and AD849 are high speed, low power monolithic operational amplifiers. The AD848 is internally compensated so that it is stable for closed loop gains of 5 or greater. The AD849 is fully decompensated and is stable at gains greater than 24. The AD848 and AD849 achieve their combination of fast ac and good dc performance by utilizing Analog Devices’ junction isolated complementary bipolar (CB) process. This process enables these op amps to achieve their high speed while only requiring 4.8 mA of current from the power supplies.

The AD848 and AD849 are members of Analog Devices’ family of high speed op amps. This family includes, among others, the AD847 which is unity gain stable, with a gain bandwidth of

50 MHz. For more demanding applications, the AD840, AD841 and AD842 offer even greater precision and greater output current drive.

The AD848 and AD849 have good dc performance. When operating with ±5 V supplies, they offer open loop gains of 13 V/mV (AD848 with a 500 Ω load) and low input offset voltage of 1 mV maximum. Common-mode rejection is a minimum of 92 dB. Output voltage swing is ±3 V even into loads as low as 150 Ω.

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.

AD848/AD849

CONNECTION DIAGRAMS

Plastic (N),

Small Outline (R) and

Cerdip (Q) Packages

			AD848/49
	NULL	1										8	NULL
	–IN	2										7	+VS
	+IN	3										6	OUTPUT
	–VS	4		TOP VIEW								5	NC
			(Not to Scale)
		NC = NO CONNECT

20-Terminal LCC Pinout

			NC		V+		NC		OUTPUT		NC
			18		17		16		15		14
NC	19												13	NC
OFFSET
	20		AD848SE/883B										12	NC
NULL
NC	1				TOP VIEW								11	NC
OFFSET				(Not to Scale)
	2												10	V–
NULL
NC	3												9	NC
			4		5		6		7		8
			NC		–IN		NC		+IN		NC
		NC = NO CONNECT

APPLICATIONS HIGHLIGHTS

1.The high slew rate and fast settling time of the AD848 and AD849 make them ideal for video instrumentation circuitry, low noise pre-amps and line drivers.

2.In order to meet the needs of both video and data acquisition

applications, the AD848 and AD849 are optimized and tested for ±5 V and ±15 V power supply operation.

3.Both amplifiers offer full power bandwidth greater than 20 MHz (for 2 V p-p with ±5 V supplies).

4.The AD848 and AD849 remain stable when driving any capacitive load.

5.Laser wafer trimming reduces the input offset voltage to

1 mV maximum on all grades, thus eliminating the need for external offset nulling in many applications.

6.The AD848 is an enhanced replacement for the LM6164 series and can function as a pin-for-pin replacement for many high speed amplifiers such as the HA2520/2/5 and EL2020 in applications where the gain is 5 or greater.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: [phone] Fax: [phone]

AD848/AD849–SPECIFICATIONS (@ TA = +258C, unless otherwise noted)

				AD848J		AD848A/S
Model	Conditions	VS	Min	Typ	Max	Min	Typ	Max	Units
INPUT OFFSET VOLTAGE1		±5 V		0.2	1		0.2	1	mV
		±15 V		0.5	2.3		0.5	2.3	mV
	TMIN to TMAX	±5 V			1.5			2	mV
		±15 V			3.0			3.5	mV
Offset Drift		±5 V, ±15 V		7			7		mV/°C
INPUT BIAS CURRENT		±5 V, ±15 V		3.3	6.6		3.3	6.6/5	mA
	TMIN to TMAX	±5 V, ±15 V			7.2			7.5	mA
INPUT OFFSET CURRENT		±5 V, ±15 V		50	300		50	300	nA
	TMIN to TMAX	±5 V, ±15 V			400			400	nA
Offset Current Drift		±5 V, ±15 V		0.3			0.3		nA/°C
OPEN LOOP GAIN	VO = ±2.5 V	±5 V
	RLOAD = 500 W		9	13		9	13		V/mV
	TMIN to TMAX		7			7/5			V/mV
	RLOAD = 150 W			8			8		V/mV
	VOUT = ±10 V	±15 V
	RLOAD = 1 kW		12	20		12	20		V/mV
	TMIN to TMAX		8			8/6			V/mV
DYNAMIC PERFORMANCE	AVCL ³ 5	±5 V
Gain Bandwidth				125			125		MHz
Full Power Bandwidth2	VO = 2 V p-p,	±15 V		175			175		MHz
	RL = 500 W	±5 V		24			24		MHz
	VO = 20 V p-p,
	RL = 1 kW	±15 V		4.7			4.7		MHz
Slew Rate		±5 V		200			200		V/ms
	RLOAD = 1 kW	±15 V	225	300		225	300		V/ms
Settling Time to 0.1%	–2.5 V to +2.5 V	±5 V		65			65		ns
	10 V Step, AV = –4	±15 V		100			100		ns
Phase Margin	CLOAD = 10 pF	±15 V
	RLOAD = 1 kW			60			60		Degrees
DIFFERENTIAL GAIN	f = 4.4 MHz	±15 V		0.07			0.07		%
DIFFERENTIAL PHASE	f = 4.4 MHz	±15 V		0.08			0.08		Degree
COMMON-MODE REJECTION	VCM = ±2.5 V	±5 V	92	105		92	105		dB
	VCM = ±12 V	±15 V	92	105		92	105		dB
	TMIN to TMAX		88			88			dB
POWER SUPPLY REJECTION	VS = ±4.5 V to ±18 V		85	98		85	98		dB
	TMIN to TMAX		80			80			dB
INPUT VOLTAGE NOISE	f = 10 kHz	±15 V		5			5		nV/Ö
										Hz
INPUT CURRENT NOISE	f = 10 kHz	±15 V		1.5			1.5		pA/Ö
										Hz
INPUT COMMON-MODE		±5 V
VOLTAGE RANGE				+4.3			+4.3		V
		±15 V		–3.4			–3.4		V
				+14.3			+14.3		V
				–13.4			–13.4		V
OUTPUT VOLTAGE SWING	RLOAD = 500 W	±5 V	3.0	3.6		3.0	3.6		±V
	RLOAD = 150 W	±5 V	2.5	3		2.5	3		±V
	RLOAD = 50 W	±5 V		1.4			1.4		±V
	RLOAD = 1 kW	±15 V	12			12			±V
	RLOAD = 500 W	±15 V	10			10			±V
SHORT CIRCUIT CURRENT		±15 V		32			32		mA
INPUT RESISTANCE				70			70		kW
INPUT CAPACITANCE				1.5			1.5		pF
OUTPUT RESISTANCE	Open Loop			15			15		W
POWER SUPPLY
Operating Range		±5 V	64.5		618	64.5		618	V
Quiescent Current				4.8	6.0		4.8	6.0	mA
	TMIN to TMAX	±15 V			7.4			7.4/8.3	mA
				5.1	6.8		5.1	6.8	mA
	TMIN to TMAX				8.0			8.0/9.0	mA

NOTES

1Input offset voltage specifications are guaranteed after 5 minutes at TA = +25°C. 2Full power bandwidth = slew rate/2 π VPEAK. Refer to Figure 1.

All min and max specifications are guaranteed. Specifications in boldface are tested on all production units at final electrical test. All others are guaranteed but not necessarily tested. Specifications subject to change without notice.

–2–

REV. B

AD848/AD849

				AD849J		AD849A/S
Model	Conditions	VS	Min	Typ	Max	Min	Typ	Max	Units
INPUT OFFSET VOLTAGE1		±5 V		0.3	1		0.1	0.75	mV
		±15 V		0.3	1		0.1	0.75	mV
	TMIN to TMAX	±5 V			1.3			1.0	mV
		±15 V			1.3			1.0	mV
Offset Drift		±5 V, ±15 V		2			2		mV/°C
INPUT BIAS CURRENT		±5 V, ±15 V		3.3	6.6		3.3	6.6/5	mA
	TMIN to TMAX	±5 V, ±15 V			7.2			7.5	mA
INPUT OFFSET CURRENT		±5 V, ±15 V		50	300		50	300	nA
	TMIN to TMAX	±5 V, ±15 V			400			400	nA
Offset Current Drift		±5 V, ±15 V		0.3			0.3		nA/°C
OPEN LOOP GAIN	VO = ±2.5 V	±5 V
	RLOAD = 500 W		30	50		30	50		V/mV
	TMIN to TMAX		20			20/15			V/mV
	RLOAD = 150 W			32			32		V/mV
	VOUT = ± 10 V	±15 V
	RLOAD = 1 kW		45	85		45	85		V/mV
	TMIN to TMAX		30			30/25			V/mV
DYNAMIC PERFORMANCE	AVCL ³ 25	±5 V
Gain Bandwidth				520			520		MHz
Full Power Bandwidth2	VO = 2 V p-p,	±15 V		725			725		MHz
	RL = 500 W	±5 V		20			20		MHz
	VO = 20 V p-p,
	RL = 1 kW	±15 V		4.7			4.7		MHz
Slew Rate		±5 V		200			200		V/ms
	RLOAD = 1 kW	±15 V	225	300		225	300		V/ms
Settling Time to 0.1%	–2.5 V to +2.5 V	±5 V		65			65		ns
	10 V Step, AV = –24	±15 V		80			80		ns
Phase Margin	CLOAD = 10 pF	±15 V
	RLOAD = 1 kW			60			60		Degrees
DIFFERENTIAL GAIN	f = 4.4 MHz	±15 V		0.08			0.08		%
DIFFERENTIAL PHASE	f = 4.4 MHz	±15 V		0.04			0.04		Degrees
COMMON-MODE REJECTION	VCM = ±2.5 V	±5 V	100	115		100	115		dB
	VCM = ±12 V	±15 V	100	115		100	115		dB
	TMIN to TMAX		96			96			dB
POWER SUPPLY REJECTION	VS = ±4.5 V to ±18 V		98	120		98	120		dB
	TMIN to TMAX		94			94			dB
INPUT VOLTAGE NOISE	f = 10 kHz	±15 V		3			3		nV/Ö
										Hz
INPUT CURRENT NOISE	f = 10 kHz	±15 V		1.5			1.5		pA/Ö
										Hz
INPUT COMMON-MODE		±5 V
VOLTAGE RANGE				+4.3			+4.3		V
		±15 V		–3.4			–3.4		V
				+14.3			+14.3		V
				–13.4			–13.4		V
OUTPUT VOLTAGE SWING	RLOAD = 500 W	±5 V	3.0	3.6		3.0	3.6		±V
	RLOAD = 150 W	±5 V	2.5	3		2.5	3		±V
	RLOAD = 50 W	±5 V		1.4			1.4		±V
	RLOAD = 1 kW	±15 V	12			12			±V
	RLOAD = 500 W	±15 V	10			10			±V
SHORT CIRCUIT CURRENT		±15 V		32			32		mA
INPUT RESISTANCE				25			25		kW
INPUT CAPACITANCE				1.5			1.5		pF
OUTPUT RESISTANCE	Open Loop			15			15		W
POWER SUPPLY
Operating Range		±5 V	64.5		618	64.5		618	V
Quiescent Current				4.8	6.0		4.8	6.0	mA
	TMIN to TMAX	±15 V			7.4			7.4/8.3	mA
				5.1	6.8		5.1	6.8	mA
	TMIN to TMAX				8.0			8.0/9.0	mA

NOTES

1Input offset voltage specifications are guaranteed after 5 minutes at TA = +25°C. 2Full power bandwidth = slew rate/2 π VPEAK. Refer to Figure 1.

All min and max specifications are guaranteed. Specifications in boldface are tested on all production units at final electrical test. All others are guaranteed but not necessarily tested. Specifications subject to change without notice.

REV. B

–3–