Analog Devices AD524SE-883B, AD524SD-883B, AD524SD, AD524SCHIPS, AD524CD Datasheet

a		Precision
		Instrumentation Amplifier
		AD524

FEATURES

Low Noise: 0.3 mV p-p 0.1 Hz to 10 Hz

Low Nonlinearity: 0.003% (G = 1) High CMRR: 120 dB (G = 1000) Low Offset Voltage: 50 mV

Low Offset Voltage Drift: 0.5 mV/8C

Gain Bandwidth Product: 25 MHz

Pin Programmable Gains of 1, 10, 100, 1000 Input Protection, Power On–Power Off

No External Components Required Internally Compensated MIL-STD-883B and Chips Available

16-Lead Ceramic DIP and SOIC Packages and

20-Terminal Leadless Chip Carriers Available Available in Tape and Reel in Accordance

with EIA-481A Standard

Standard Military Drawing Also Available

FUNCTIONAL BLOCK DIAGRAM

	–INPUT	PROTECTION
	G = 10	4.44kV	AD524
	G = 100	404V
		Vb	20kV
	G = 1000	40V	SENSE
	RG1	20kV	20kV
			VOUT
	RG2
		20kV	20kV
			20kV
			REFERENCE
	+INPUT	PROTECTION

PRODUCT DESCRIPTION

The AD524 is a precision monolithic instrumentation amplifier designed for data acquisition applications requiring high accuracy under worst-case operating conditions. An outstanding combination of high linearity, high common mode rejection, low offset voltage drift and low noise makes the AD524 suitable for use in many data acquisition systems.

The AD524 has an output offset voltage drift of less than 25 mV/°C, input offset voltage drift of less than 0.5 mV/°C, CMR above

90 dB at unity gain (120 dB at G = 1000) and maximum nonlinearity of 0.003% at G = 1. In addition to the outstanding dc specifications, the AD524 also has a 25 kHz gain bandwidth product (G = 1000). To make it suitable for high speed data acquisition systems the AD524 has an output slew rate of 5 V/ms and settles in 15 ms to 0.01% for gains of 1 to 100.

As a complete amplifier the AD524 does not require any external components for fixed gains of 1, 10, 100 and 1000. For other gain settings between 1 and 1000 only a single resistor is required. The AD524 input is fully protected for both power-on and power-off fault conditions.

The AD524 IC instrumentation amplifier is available in four different versions of accuracy and operating temperature range. The economical “A” grade, the low drift “B” grade and lower drift, higher linearity “C” grade are specified from –25°C to +85°C. The “S” grade guarantees performance to specification over the extended temperature range –55°C to +125°C. Devices are available in 16-lead ceramic DIP and SOIC packages and a 20-terminal leadless chip carrier.

REV. E

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.

PRODUCT HIGHLIGHTS

1.The AD524 has guaranteed low offset voltage, offset voltage drift and low noise for precision high gain applications.

2.The AD524 is functionally complete with pin programmable gains of 1, 10, 100 and 1000, and single resistor programmable for any gain.

3.Input and output offset nulling terminals are provided for very high precision applications and to minimize offset voltage changes in gain ranging applications.

4.The AD524 is input protected for both power-on and poweroff fault conditions.

5.The AD524 offers superior dynamic performance with a gain

bandwidth product of 25 MHz, full power response of 75 kHz and a settling time of 15 ms to 0.01% of a 20 V step (G = 100).

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

AD524–SPECIFICATIONS (@ VS = 615 V, RL = 2 kV and TA = +258C unless otherwise noted)

			AD524A						AD524B								AD524C								AD524S
Model	Min		Typ			Max	Min		Typ					Max	Min		Typ					Max	Min		Typ					Max	Units
GAIN
Gain Equation
(External Resistor Gain		40 , 000		+ 1 ± 20%				40 , 000		+ 1 ± 20%						40 , 000		+ 1 ± 20%						40 , 000		+ 1 ± 20%
			G						G								G								G
Programming)			R						R								R								R
Gain Range (Pin Programmable)			1 to 1000						1 to 1000								1 to 1000								1 to 1000
Gain Error1						60.05								60.03								60.02								60.05
G = 1																															%
G = 10						60.25								60.15								60.1								60.25	%
G = 100						60.5								60.35								60.25								60.5	%
G = 1000						±2.0								61.0								60.5								62.0	%
Nonlinearity						±0.01								± 0.005								± 0.003								± 0.01
G = 1																															%
G = 10,100						±0.01								± 0.005								± 0.003								± 0.01	%
G = 1000						±0.01								± 0.01								± 0.01								± 0.01	%
Gain vs. Temperature																															ppm/°C
G = 1						5								5								5								5
G = 10						15								10								10								10	ppm/°C
G = 100						35								25								25								25	ppm/°C
G = 1000						100								50								50								50	ppm/°C
VOLTAGE OFFSET (May be Nulled)						250								100								50								100	µV
Input Offset Voltage
vs. Temperature						2								0.75								0.5								2.0	µV/°C
Output Offset Voltage						5								3								2.0								3.0	mV
vs. Temperature						100								50								25								50	µV/°C
Offset Referred to the
Input vs. Supply	70						75								80								75
G = 1																															dB
G = 10	85						95								100								95								dB
G = 100	95						105								110								105								dB
G = 1000	100						110								115								110								dB
INPUT CURRENT						650								625								615								650
Input Bias Current																															nA
vs. Temperature			±100						±100								± 100								± 100						pA/°C
Input Offset Current						635								615								610								635	nA
vs. Temperature			±100						±100								± 100								± 100						pA/°C
INPUT
Input Impedance			109						109								109								109						Ω
Differential Resistance
Differential Capacitance			10						10								10								10						pF
Common-Mode Resistance			109						109								109								109						Ω
Common-Mode Capacitance			10						10								10								10						pF
Input Voltage Range	±10						±10								± 10								± 10
Max Differ. Input Linear (VDL)2			G						G								G									G					V
Max Common-Mode Linear (VCM)
		12 V –				× VD		12 V –					×	VD	12 V –						×	VD		12 V –					×	VD	V
Common-Mode Rejection dc to			2						2								2									2
60 Hz with 1 kΩ Source Imbalance	70						75								80								70
G = 1																															dB
G = 10	90						95								100								90								dB
G = 100	100						105								110								100								dB
G = 1000	110						115								120								110								dB
OUTPUT RATING
VOUT, RL = 2 kΩ			±10						±10								± 10								± 10						V
DYNAMIC RESPONSE
Small Signal – 3 dB
G = 1			1						1								1								1						MHz
G = 10			400						400								400								400						kHz
G = 100			150						150								150								150						kHz
G = 1000			25						25								25								25						kHz
Slew Rate			5.0						5.0								5.0								5.0						V/µs
Settling Time to 0.01%, 20 V Step																															µs
G = 1 to 100			15						15								15								15
G = 1000			75						75								75								75						µs
NOISE
Voltage Noise, 1 kHz																															nV/√Hz
R.T.I.			7						7								7								7
R.T.O.			90						90								90								90						nV√Hz
R.T.I., 0.1 Hz to 10 Hz																															µV p-p
G = 1			15						15								15								15
G = 10			2						2								2								2						µV p-p
G = 100, 1000			0.3						0.3								0.3								0.3						µV p-p
Current Noise
0.1 Hz to 10 Hz			60						60								60								60						pA p-p

–2–

REV. E

AD524

AD524A

AD524B

AD524C

AD524S

Model

Min

Typ

Max

Min

Typ

Max

Min

Typ

Max

Min

Typ

Max

Units

SENSE INPUT

20

20

20

20

kΩ ±20%

RIN

IIN

±10

15

±10

15

±10

15

±10

15

mA

Voltage Range

V

Gain to Output

l

l

1

l

%

REFERENCE INPUT

40

40

40

40

kΩ ±20%

RIN

IIN

±10

15

±10

15

15

15

mA

Voltage Range

10

10

V

Gain to Output

l

1

l

1

%

TEMPERATURE RANGE

°C

Specified Performance

–25

+85

–25

+85

–25

+85

–55

+125

Storage

–65

+150

–65

+150

–65

+150

–65

+150

°C

POWER SUPPLY

66

±15

618

66

±15

618

66

±15

618

66

±15

618

Power Supply Range

V

Quiescent Current

3.5

5.0

3.5

5.0

3.5

5.0

3.5

5.0

mA

NOTES

1Does not include effects of external resistor RG.

2VOL is the maximum differential input voltage at G = 1 for specified nonlinearity. VDL at the maximum = 10 V/G.

VD = Actual differential input voltage.

Example: G = 10, VD = 0.50.

VCM = 12 V – (10/2 ¥ 0.50 V) = 9.5 V.

Specification subject to change without notice.

All min and max specifications are guaranteed. Specifications shown in boldface are tested on all production units at final electrical test. Results from those tests are used to calculate outgoing quality levels.

REV. E

–3–

AD524

ABSOLUTE MAXIMUM RATINGSl

Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±18 V Internal Power Dissipation . . . . . . . . . . . . . . . . . . . . . 450 mW Input Voltage2

(Either Input Simultaneously) |VIN| + |VS| . . . . . . . . <36 V Output Short Circuit Duration . . . . . . . . . . . . . . . . . Indefinite Storage Temperature Range

(R) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to +125°C (D, E) . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to +150°C

Operating Temperature Range

AD524A/B/C . . . . . . . . . . . . . . . . . . . . . . . . –25°C to +85°C AD524S . . . . . . . . . . . . . . . . . . . . . . . . . . –55°C to +125°C Lead Temperature (Soldering 60 secs) . . . . . . . . . . . . +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.

2Max input voltage specification refers to maximum voltage to which either input terminal may be raised with or without device power applied. For example, with ± 18 volt supplies max VIN is ± 18 volts, with zero supply voltage max VIN is ± 36 volts.

METALIZATION PHOTOGRAPH

Contact factory for latest dimensions.

Dimensions shown in inches and (mm).

OUTPUT			G = 100	G = 1000	SENSE
	NULL	G = 10
	14	13	12	11	10
OUTPUT	15
						9 OUTPUT
NULL
RG1 16						8 +VS

–INPUT 1

+INPUT 2

RG2 3

0.103

(2.61)

7 –V

S

4	5	6
INPUT	INPUT		REFERENCE
NULL	NULL
		0.170 (4.33)

PAD NUMBERS CORRESPOND TO PIN NUMBERS FOR THE D-16 AND R-16 16-PIN CERAMIC PACKAGES.

CONNECTION DIAGRAMS

Ceramic (D) and

SOIC (R) Packages

							RG1
– INPUT		1				16
+ INPUT
		2				15	OUTPUT NULL
RG2
		3				14	OUTPUT NULL
INPUT NULL				AD524			G = 10
		4				13		SHORT TO
INPUT NULL				TOP VIEW			G = 100	RG2 FOR
		5		(Not to Scale)		12
								DESIRED
REFERENCE		6				11	G = 1000	GAIN
–V							SENSE
		7				10
	S
+VS							OUTPUT
		8				9
+V	S			4	15		–V
							S
INPUT				5	14	OUTPUT
OFFSET NULL						OFFSET NULL

Leadless Chip Carrier

	+INPUT	–INPUT	NC	RG	OUTPUT NULL
				1
	3	2	1	20 19
RG2 4						18	OUTPUT NULL
INPUT NULL 5		AD524				17	G = 10	SHORT TO
NC 6						16	NC	RG2 FOR
		TOP VIEW
INPUT NULL 7						15	G = 100	DESIRED
REFERENCE 8						14	G = 1000	GAIN
	9	10	11 12 13			NC = NO CONNECT
	S	S	NC	OUTPUT	SENSE
	–V	+V
		7	19
+V	S					–V
							S
INPUT		5	18			OUTPUT
OFFSET NULL						OFFSET NULL

ORDERING GUIDE

Model	Temperature Ranges	Package Descriptions	Package Options
AD524AD	–40°C to +85°C	16-Lead Ceramic DIP	D-16
AD524AE	–40°C to +85°C	20-Terminal Leadless Chip Carrier	E-20A
AD524AR-16	–40°C to +85°C	16-Lead Gull-Wing SOIC	R-16
AD524AR-16-REEL	–40°C to +85°C	Tape & Reel Packaging 13"
AD524AR-16-REEL7	–40°C to +85°C	Tape & Reel Packaging 7"
AD524BD	–40°C to +85°C	16-Lead Ceramic DIP	D-16
AD524BE	–40°C to +85°C	20-Terminal Leadless Chip Carrier	E-20A
AD524CD	–40°C to +85°C	16-Lead Ceramic DIP	D-16
AD524SD	–55°C to +125°C	16-Lead Ceramic DIP	D-16
AD524SD/883B	–55°C to +125°C	16-Lead Ceramic DIP	D-16
5962-8853901EA*	–55°C to +125°C	16-Lead Ceramic DIP	D-16
AD524SE/883B	–55°C to +125°C	20-Terminal Leadless Chip Carrier	E-20A
AD524SCHIPS	–55°C to +125°C	Die

*Refer to official DESC drawing for tested specifications.

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 AD524 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

–4–

REV. E

6V–	20
	15
VOLTAGE
	10
INPUT						+258C
	5
	0
			5	10		15		20
	0

SUPPLY VOLTAGE –6V

Figure 1. Input Voltage Range vs. Supply Voltage, G = 1

		8.0
	mA	6.0
	–
	CURRENT	4.0
	QUIESCENT	2.0
		0

0

5

10

15

20

SUPPLY VOLTAGE –6V

Figure 4. Quiescent Current vs. Supply Voltage

				AD524–Typical Characteristics
20					30
15					p-p
					VOLTAGEOUTPUTSWING –V
VOLTAGEOUTPUTSWING–6V
					20
10
					10
5
0	5	10	15	20	0	100	1k	10k
0					10
	SUPPLY VOLTAGE –6V					LOAD RESISTANCE –V

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

	16
6nA–	14
	12
CURRENT
	10
	8
BIAS	6
	4
INPUT
	2
	0
			5		10		15		20
	0

SUPPLY VOLTAGE –6V

Figure 5. Input Bias Current vs. Supply Voltage

	40
– nA	30
	20
CURRENT	0
BIAS	10
	–10
INPUT
	–20
	–30
	–40
		–75		–25		25		75		125

TEMPERATURE –8C

Figure 6. Input Bias Current vs. Temperature

INPUT BIAS CURRENT –6nA

16
14				–mV	0
12					1
10				VALUE	2								V/V
4				FROMFINAL	5								GAIN–
8					3
6					4
				OS
2				DV	6
0
0	5	10	15	20	0	1.0	2.0	3.0	4.0	5.0	6.0	7.0	8.0
		INPUT VOLTAGE –6V					WARM-UP TIME – Minutes

1000

100

10

1

0

10

100

1k

10k

100k

1M

10M

FREQUENCY – Hz

Figure 7. Input Bias Current vs. Input	Figure 8. Offset Voltage, RTI, Turn	Figure 9. Gain vs. Frequency
Voltage	On Drift

REV. E

–5–