Analog Devices AD829SQ-883B, AD829SQ, AD829SE-883B, AD829SCHIPS, AD829JR-REEL7 Datasheet

a	High-Speed, Low-Noise
	Video Op Amp

FEATURES

High Speed

120 MHz Bandwidth, Gain = –1

230 V/ s Slew Rate

90 ns Settling Time to 0.1% Ideal for Video Applications

0.02% Differential Gain

0.04 Differential Phase

Low Noise

1.7 nV/√Hz Input Voltage Noise

1.5 pA/√Hz Input Current Noise Excellent DC Precision

1 mV max Input Offset Voltage (Over Temp)

0.3 V/ C Input Offset Drift

Flexible Operation

Specified for 5 V to 15 V Operation3 V Output Swing into a 150 Load

External Compensation for Gains 1 to 20 5 mA Supply Current

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

PRODUCT DESCRIPTION

The AD829 is a low noise (1.7 nV/√Hz), high speed op amp with custom compensation that provides the user with gains from ±1 to ±20 while maintaining a bandwidth greater than 50 MHz. The AD829’s 0.04° differential phase and 0.02% differential gain performance at 3.58 MHz and 4.43 MHz,

driving reverse-terminated 50 Ω or 75 Ω cables, makes it ideally suited for professional video applications. The AD829 achieves its 230 V/µs uncompensated slew rate and 750 MHz gain bandwidth product while requiring only 5 mA of current from the power supplies.

The AD829’s external compensation pin gives it exceptional versatility. For example, compensation can be selected to optimize the bandwidth for a given load and power supply voltage. As a gain-of-two line driver, the –3 dB bandwidth can be increased to 95 MHz at the expense of 1 dB of peaking. In addition, the AD829’s output can also be clamped at its external compensation pin.

The AD829 has excellent dc performance. It offers a minimum open-loop gain of 30 V/mV into loads as low as 500 Ω, low input voltage noise of 1.7 nV/√Hz, and a low input offset voltage of 1 mV maximum. Common-mode rejection and power supply rejection ratios are both 120 dB.

The AD829 is also useful in multichannel, high speed data conversion where its fast (90 ns to 0.1%) settling time is of importance. In such applications, the AD829 serves as an input buffer for 8-to-10-bit A/D converters and as an output I/V converter for high speed D/A converters.

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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 which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

AD829

CONNECTION DIAGRAMS

8-Lead Plastic Mini-DIP (N),

Cerdip (Q) and SOIC (R) Packages

OFFSET NULL	1	AD829	8	OFFSET NULL
–IN	2		7	+VS
+IN	3		6	OUTPUT
–VS	4	TOP VIEW	5	CCOMP
		(Not to Scale)

20-Lead LCC Pinout

	NC OFFSET NULL		NC	OFFSET NULL	NC
	3	2	1	20 19
NC 4						18 NC
–IN 5		AD829				17 +V
NC 6						16 NC
		TOP VIEW
+IN 7	(Not to Scale)					15 OUTPUT
NC 8						14 NC
	9	10	11 12		13
	NC	–V	NC	COMP	NC
NC = NO CONNECT				C

The AD829 provides many of the same advantages that a transimpedance amplifier offers, while operating as a traditional voltage feedback amplifier. A bandwidth greater than 50 MHz can be maintained for a range of gains by changing the external compensation capacitor. The AD829 and the transimpedance amplifier are both unity gain stable and provide similar voltage noise performance (1.7 nV/√Hz). However, the current noise of the AD829 (1.5 pA/√Hz) is less than 10% of the noise of transimpedance amps. Furthermore, the inputs of the AD829 are symmetrical.

PRODUCT HIGHLIGHTS

1.Input voltage noise of 2 nV/√Hz, current noise of 1.5 pA/ √Hz and 50 MHz bandwidth, for gains of 1 to 20, make the AD829 an ideal preamp.

2.Differential phase error of 0.04° and a 0.02% differential gain error, at the 3.58 MHz NTSC and 4.43 MHz PAL and

SECAM color subcarrier frequencies, make it an outstanding video performer for driving reverse-terminated 50 Ω and

75 Ω cables to ±1 V (at their terminated end).

3.The AD829 can drive heavy capacitive loads.

4. Performance is fully specified for operation from ±5 V to

±15 V supplies.

5.Available in plastic, cerdip, and small outline packages. Chips and MIL-STD-883B parts are also available.

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., 2000

AD829–SPECIFICATIONS (@ TA = +25 C and VS = 15 V dc, unless otherwise noted)

				AD829J/AR			AD829AQ/S
Model	Conditions	VS	Min	Typ	Max	Min	Typ	Max	Units
INPUT OFFSET VOLTAGE		±5 V, ±15 V		0.2	1		0.1	0.5	mV
	TMIN to TMAX	±5 V, ±15 V			1			0.5	mV
Offset Voltage Drift				0.3			0.3		µV/°C
INPUT BIAS CURRENT		±5 V, ±15 V		3.3	7		3.3	7	µA
	TMIN to TMAX				8.2/9.5			9.5	µA
INPUT OFFSET CURRENT		±5 V, ±15 V		50	500		50	500	nA
	TMIN to TMAX	±5 V, ±15 V			500			500	nA
Offset Current Drift				0.5			0.5		nA/°C
OPEN-LOOP GAIN	VO = ±2.5 V	±5 V
	RLOAD = 500 Ω		30	65		30	65		V/mV
	TMIN to TMAX		20			20			V/mV
	RLOAD = 150 Ω			40			40		V/mV
	VOUT = ±10 V	±15 V
	RLOAD = 1 kΩ		50	100		50	100		V/mV
	TMIN to TMAX		20			20			V/mV
	RLOAD = 500 Ω			85			85		V/mV
DYNAMIC PERFORMANCE		±5 V
Gain Bandwidth Product				600			600		MHz
Full Power Bandwidth1, 2		±15 V		750			750		MHz
	VO = 2 V p-p
	RLOAD = 500 Ω	±5 V		25			25		MHz
	VO = 20 V p-p
	RLOAD = 1 kΩ	±15 V		3.6			3.6		MHz
Slew Rate2	RLOAD = 500 Ω	±5 V		150			150		V/µs
	RLOAD = 1 kΩ	±15 V		230			230		V/µs
Settling Time to 0.1%	AV = –19	±5 V
	–2.5 V to +2.5 V			65			65		ns
	10 V Step	±15 V		90			90		ns
Phase Margin2	CLOAD = 10 pF	±15 V
	RLOAD = 1 kΩ			60			60		Degrees
DIFFERENTIAL GAIN ERROR3	RLOAD = 100 Ω	±15 V
	CCOMP = 30 pF			0.02			0.02		%
DIFFERENTIAL PHASE ERROR3	RLOAD = 100 Ω	±15 V
	CCOMP = 30 pF			0.04			0.04		Degrees
COMMON-MODE REJECTION	VCM = ± 2.5 V	±5 V	100	120		100	120		dB
	VCM = ± 12 V	±15 V	100	120		100	120		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 = 1 kHz	±15 V		1.7	2		1.7	2	nV/√Hz
INPUT CURRENT NOISE	f = 1 kHz	±15 V		1.5			1.5		pA/√Hz
INPUT COMMON-MODE		±5 V
VOLTAGE RANGE				+4.3			+4.3		V
		±15 V		–3.8			–3.8		V
				+14.3			+14.3		V
				–13.8			–13.8		V
OUTPUT VOLTAGE SWING	RLOAD = 500 Ω	±5 V	3.0	3.6		3.0	3.6		±V
	RLOAD = 150 Ω	±5 V	2.5	3.0		2.5	3.0		±V
	RLOAD = 50 Ω	±5 V		1.4			1.4		±V
	RLOAD = 1 kΩ	±15 V	12	13.3		12	13.3		±V
	RLOAD = 500 Ω	±15 V	10	12.2		10	12.2		±V
Short Circuit Current		±5 V, ±15 V		32			32		mA
INPUT CHARACTERISTICS									kΩ
Input Resistance (Differential)				13			13
Input Capacitance (Differential)4				5			5		pF
Input Capacitance (Common Mode)				1.5			1.5		pF
CLOSED-LOOP OUTPUT									mΩ
RESISTANCE	AV = +1, f = 1 kHz			2			2

–2–

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								AD829
			AD829J/AR			AD829AQ/S
Model	Conditions	VS	Min Typ	Max	Min	Typ	Max	Units
POWER SUPPLY			±4.5	±18	±4.5		±18
Operating Range		±5 V						V
Quiescent Current			5	6.5		5	6.5	mA
	TMIN to TMAX	±15 V		8.0			8.2/8.7	mA
			5.3	6.8		5.3	6.8	mA
	TMIN to TMAX			8.3/8.5			8.5/9.0	mA
TRANSISTOR COUNT	Number of Transistors		46			46

NOTES

1Full Power Bandwidth = Slew Rate/2 π VPEAK. 2Tested at Gain = +20, CCOMP = 0 pF.

33.58 MHz (NTSC) and 4.43 MHz (PAL & SECAM).

4Differential input capacitance consists of 1.5 pF package capacitance plus 3.5 pF from the input differential pair.

Specifications subject to change without notice.

ABSOLUTE MAXIMUM RATINGS1

Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±18 V Internal Power Dissipations2

Plastic (N) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3 Watts Small Outline (R) . . . . . . . . . . . . . . . . . . . . . . . . . 0.9 Watts Cerdip (Q) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3 Watts LCC (E) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.8 Watts

Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±VS Differential Input Voltage3 . . . . . . . . . . . . . . . . . . . . ±6 Volts

Output Short Circuit Duration . . . . . . . . . . . . . . . . Indefinite Storage Temperature Range (Q, E) . . . . . . . –65°C to +150°C Storage Temperature Range (N, R) . . . . . . . –65°C to +125°C Operating Temperature Range

AD829J . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to +70°C AD829A . . . . . . . . . . . . . . . . . . . . . . . . . . . –40°C to +85°C AD829S . . . . . . . . . . . . . . . . . . . . . . . . . . –55°C to +125°C Lead Temperature Range (Soldering 60 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 and 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.

2Maximum internal power dissipation is specified so that TJ does not exceed +175°C at an ambient temperature of +25°C.

Thermal characteristics:

8-lead plastic package: θJA = 100°C/watt (derate at 8.7 mW/°C) 8-lead cerdip package: θJA = 110°C/watt (derate at 8.7 mW/°C) 20-lead LCC package: θJA = 150°C/watt

8-lead small outline package: θJA = 155°C/watt (derate at 6 mW/°C).

3If the differential voltage exceeds 6 volts, external series protection resistors should be added to limit the input current.

METALIZATION PHOTO

Contact factory for latest dimensions.

Dimensions shown in inches and (mm).

ESD SUSCEPTIBILITY

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 volts, which readily accumulate on the human body and on test equipment, can discharge without detection. Although the AD829 features proprietary ESD protection circuitry, permanent damage may still occur on these devices if they are subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid any performance degradation or loss of functionality.

ORDERING GUIDE

Model	Temperature Range	Package Description	Package Option*
AD829JN	0°C to +70°C	8-Lead Plastic Mini-DIP	N-8
AD829AR	–40°C to +85°C	8-Lead Plastic SOIC	SO-8
AD829JR	0°C to +70°C	8-Lead Plastic SOIC	SO-8
AD829AR-REEL7	–40°C to +85°C	Tape and Reel 7"
AD829AR-REEL	–40°C to +85°C	Tape and Reel 13"
AD829JR-REEL7	0°C to +70°C	Tape and Reel 7"
AD829JR-REEL	0°C to +70°C	Tape and Reel 13"
AD829AQ	–40°C to +85°C	8-Lead Cerdip	Q-8
AD829SQ	–55°C to +125°C	8-Lead Cerdip	Q-8
AD829SQ/883B	–55°C to +125°C	8-Lead Cerdip	Q-8
5962-9312901MPA	–55°C to +125°C	8-Lead Cerdip	Q-8
AD829SE/883B	–55°C to +125°C	20-Lead LCC	E-20A
5962-9312901M2A	–55°C to +125°C	20-Lead LCC	E-20A
AD829JCHIPS	0°C to +70°C	Die
AD829SCHIPS	–55°C to +125°C	Die

*E = Leadless Chip Carrier (Ceramic); N = Plastic DIP; Q = Cerdip; SO = Small Outline IC (SOIC).

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–3–

AD829–Typical Performance Characteristics

– Volts	20
RANGE	15
MODE-COMMON					+VOUT
	10
					–VOUT
INPUT	5
	0
	0		5	10		15		20

SUPPLY VOLTAGE – Volts

Figure 1. Input Common-Mode Range vs. Supply Voltage

MAGNITUDE OF THE OUTPUT

20						30
					p–p	25		15 VOLT
Volts–VOLTAGE					Volts–SWINGVOLTAGE
								SUPPLIES
15
		+VOUT				20
10						15
			–VOUT
5						10
					OUTPUT
			RLOAD = 1k			5		5 VOLT
								SUPPLIES
0						0
0	5	10	15	20				1k	10k
						10	100
	SUPPLY VOLTAGE – Volts
							LOAD RESISTANCE –

	Figure 2. Output Voltage Swing	Figure 3. Output Voltage Swing
	vs. Supply Voltage
		vs. Resistive Load

mA	6.0
	5.5
CURRENT –
	5.0
QUIESCENT	4.5
	4.0
	0					5		10							15				20
				SUPPLY VOLTAGE – Volts
	Figure 4. Quiescent Current vs.
	Supply Voltage
– mA	7
	6
CURRENT								VS = 15V
	5
QUIESCENT
									VS	=	5V
	4
	3
						0		20 40 60							80 100 120 140
	–60 – 40 –20

TEMPERATURE – C

Figure 7. Quiescent Current vs. Temperature

A

–5

–

CURRENT

–4

BIAS

VS

=

5V, 15V

–3

INPUT

–2

–60 – 40 –20 0 20 40 60 80 100 120 140

TEMPERATURE – C

Figure 5. Input Bias Current vs. Temperature

	40
– mA				NEGATIVE
				CURRENT LIMIT
LIMIT	35
CURRENT	30		POSITIVE
		CURRENT LIMIT
CIRCUIT	25			VS = 5V
SHORT	20
	15				100 120 140
	–60 – 40 –20		0	20 40 60 80
		AMBIENT TEMPERATURE – C

Figure 8. Short Circuit Current Limit vs. Temperature

–	100
IMPEDANCE	10	AV = +20
		CCOMP = 0pF
	1
OUTPUT
	0.1
LOOP				AV = +1
	0.01			CCOMP = 68pF
-
CLOSED
	0.001	10k	100k	1M	10M	100M
	1k
			FREQUENCY – Hz

Figure 6. Closed-Loop Output Impedance vs. Frequency

	65
	VS = ±15V
	AV = +20
– MHz	CCOMP = 0pF
	60
dB BANDWIDTH	55
	50
–3
	45	0	20	40	60	80	100 120 140
	–60 – 40 –20
		TEMPERATURE – C

Figure 9. –3 dB Bandwidth vs. Temperature

–4–

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