AD630BD Analog Devices Inc, AD630BD Datasheet

AD630BD

Manufacturer Part Number

AD630BD

Description

IC MOD/DEMOD BAL 2MHZ 20-CDIP

Manufacturer

Analog Devices Inc

Datasheet

1.AD630JNZ.pdf (12 pages)

Specifications of AD630BD

Rohs Status

RoHS non-compliant

Function

Modulator/Demodulator

Frequency

2MHz

Package / Case

20-CDIP (0.300", 7.62mm)

Rf Type

Balanced

Supply Voltage Range

Â± 5V To Â± 16V

Rf Ic Case Style

DIP

No. Of Pins

Operating Temperature Range

-25Â°C To +85Â°C

Peak Reflow Compatible (260 C)

Mounting Type

Through Hole

Supply Voltage Min

Rohs Compliant

Digital Ic Case Style

DIP

Ic Function

Balanced Modulator/Demodulator

Lead Free Status / RoHS Status

Contains lead / RoHS non-compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

AD630BD

Manufacturer:

ADI

Quantity:

651

Company:

BOSTOCK HK LIMITED

Part Number:

AD630BD

Manufacturer:

ADI

Quantity:

149

Company:

BOSTOCK HK LIMITED

Part Number:

AD630BDZ

Manufacturer:

ADI

Quantity:

149

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PRODUCT DESCRIPTION

The AD630 is a high precision balanced modulator that combines

a flexible commutating architecture with the accuracy and tem-

perature stability afforded by laser wafer trimmed thin film

resistors. Its signal processing applications include balanced

modulation and demodulation, synchronous detection, phase

detection, quadrature detection, phase-sensitive detection,

lock-in amplification, and square wave multiplication. A network

of on-board applications resistors provides precision closed-loop

gains of ± 1 and ± 2 with 0.05% accuracy (AD630B). These

resistors may also be used to accurately configure multiplexer

gains of +1, +2, +3, or +4. Alternatively, external feedback may

be employed, allowing the designer to implement high gain or

complex switched feedback topologies.

The AD630 can be thought of as a precision op amp with two

independent differential input stages and a precision comparator

that is used to select the active front end. The rapid response

time of this comparator coupled with the high slew rate and fast

settling of the linear amplifiers minimize switching distortion. In

addition, the AD630 has extremely low crosstalk between chan-

nels of –100 dB @ 10 kHz.

The AD630 is used in precision signal processing and instru-

mentation applications that require wide dynamic range. When

used as a synchronous demodulator in a lock-in amplifier

configuration, it can recover a small signal from 100 dB of inter-

fering noise (see Lock-In Amplifier Applications section). Although

optimized for operation up to 1 kHz, the circuit is useful at

frequencies up to several hundred kilohertz.

Other features of the AD630 include pin programmable frequency

compensation, optional input bias current compensation resis-

tors, common-mode and differential-offset voltage adjustment,

and a channel status output that indicates which of the two

differential inputs is active. This device is now available to

Standard Military Drawing (DESC) numbers 5962-8980701RA

and 5962-89807012A.

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 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 owners.

FEATURES

Recovers Signal from 100 dB Noise

2 MHz Channel Bandwidth

45 V/ s Slew Rate

–120 dB Crosstalk @ 1 kHz

Pin Programmable, Closed-Loop Gains of

0.05% Closed-Loop Gain Accuracy and Match

100 V Channel Offset Voltage (AD630BD)

350 kHz Full Power Bandwidth

Chips Available

1 and

Balanced Modulator/Demodulator

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

Tel: 781/329-4700

Fax: 781/326-8703

PRODUCT HIGHLIGHTS

1. The configuration of the AD630 makes it ideal for signal

2. The application flexibility of the AD630 makes it the best

3. The 100 dB dynamic range of the AD630 exceeds that of any

4. The op amp format of the AD630 ensures easy implementa-

5. The AD630 can be used as a 2-channel multiplexer with

6. The AD630 has pin strappable frequency compensation (no

7. Laser trimming of comparator and amplifying channel offsets

CH A–

CH B–

CH A+

CH B+

SEL B

SEL A

processing applications, such as balanced modulation and

demodulation, lock-in amplification, phase detection, and

square wave multiplication.

choice for applications that require precisely fixed gain,

switched gain, multiplexing, integrating-switching functions,

and high speed precision amplification.

hybrid or IC balanced modulator/demodulator and is compa-

rable to that of costly signal processing instruments.

tion of high gain or complex switched feedback functions.

The application resistors facilitate the implementation of

most common applications with no additional parts.

gains of +1, +2, +3, or +4. The channel separation of

100 dB @ 10 kHz approaches the limit achievable with an

empty IC package.

external capacitor required) for stable operation at unity gain

without sacrificing dynamic performance at higher gains.

eliminates the need for external nulling in most cases.

2.5k

FUNCTIONAL BLOCK DIAGRAM

CM OFF

ADJ

COMP

AMP A

AMP B

CM OFF

ADJ

DIFF OFF

–V

ADJ

–V

DIFF OFF

10k

ADJ

AD630

10k

AD630

www.analog.com

COMP

CHANNEL

STATUS

B/A

OUT

Related parts for AD630BD

AD630BD Summary of contents

Page 1

... MHz Channel Bandwidth Slew Rate –120 dB Crosstalk @ 1 kHz Pin Programmable, Closed-Loop Gains of 0.05% Closed-Loop Gain Accuracy and Match 100 V Channel Offset Voltage (AD630BD) 350 kHz Full Power Bandwidth Chips Available PRODUCT DESCRIPTION The AD630 is a high precision balanced modulator that combines ...

Page 2

AD630–SPECIFICATIONS Model Min GAIN Open-Loop Gain 90 ± 1, ± 2 Closed-Loop Gain Error Closed-Loop Gain Match Closed-Loop Gain Drift CHANNEL INPUTS 1 V Operational Limit (–V IN Input Offset Voltage Input Offset Voltage MIN MAX Input ...

Page 3

... AD630KN 0°C to 70°C AD630AR –25°C to +85°C AD630AR-REEL –25°C to +85°C AD630AD –25°C to +85°C AD630BD –25°C to +85°C AD630SD –55°C to +125°C AD630SD/883B –55°C to +125°C 5962-8980701RA –55°C to +125°C AD630SE/883B – ...

Page 4

AD630–Typical Performance Characteristics AD630 100pF 100pF 0 1k 10k 100k 1M FREQUENCY (Hz) TPC 1. Output Voltage vs. Frequency 120 100 80 60 ...

Page 5

TOP TRACE BOTTOM TRACE 10k 10k ...

Page 6

AD630 TWO WAYS TO LOOK AT THE AD630 The functional block diagram of the AD630 (see page 1) shows the pin connections of the internal functions. An alternative archi- tectural diagram is shown in Figure 1. In this diagram, the ...

Page 7

The collectors of each switching cell connect to an input trans- conductance stage. The selected cell conveys bias currents i and i to the input stage it controls, causing it to become active. 23 The deselected cell blocks the bias ...

Page 8

AD630 the system input tied and a switching or carrier wave- form applied to the comparator, a low level square wave will appear at the output. The differential offset adjustment potenti- ometers can be used to null ...

Page 9

BALANCED DEMODULATOR The balanced modulator topology described above will also act as a balanced demodulator if a double sideband suppressed carrier waveform is applied to the signal input and the carrier signal is applied to the reference input. The output ...

Page 10

AD630 [ T B. 200mV/DIV 200mV/DIV A. 200mV/DIV Figure 13. AC Bridge Waveforms (1 V Excitation) LOCK-IN AMPLIFIER APPLICATIONS Lock-in amplification is a technique used to separate a small, narrow-band signal from interfering noise. The lock-in amplifier ...

Page 11

Side-Brazed Ceramic Dual In-Line Package [SBDIP] 0.200 (5.08) 0.200 (5.08) 0.125 (3.18) 0.180 (4.57) 0.150 (3.81) 0.130 (3.30) 0.110 (2.79) 0.358 (9.09) 0.342 (8.69) REV. E OUTLINE DIMENSIONS (D-20) Dimensions shown in inches and (millimeters) 0.005 (0.13) MIN 0.080 ...

Page 12

AD630 0.30 (0.0118) 0.10 (0.0039) COPLANARITY 0.10 CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN Revision History Location 6/04—Data Sheet changed from REV. D ...

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