Analog Devices AD602, AD600 manual REV. a

Page 2

AD600/AD602–SPECIFICATIONS(Each amplifier section, at TA = +258C, VS = 65 V, –625 mV VG +625 mV, RL = 500 V, and CL = 5 pF, unless otherwise noted. Specifications for AD600 and AD602 are identical unless otherwise noted.)

 

 

AD600J/AD602J

AD600A/AD602A

 

 

 

Parameter

Conditions

Min

Typ

Max

Min

Typ

Max

Units

 

 

 

 

 

 

 

 

 

 

 

INPUT CHARACTERISTICS

 

 

 

 

 

 

 

 

 

 

Input Resistance

Pins 2 to 3; Pins 6 to 7

98

100

102

95

100

105

Ω

Input Capacitance

 

 

2

 

 

2

 

pF

Input Noise Spectral Density1

 

 

1.4

 

 

1.4

 

nV/√

Hz

 

Noise Figure

RS = 50 Ω, Maximum Gain

 

5.3

 

 

5.3

 

dB

 

RS = 200 Ω, Maximum Gain

 

2

 

 

2

 

dB

Common-Mode Rejection Ratio

f = 100 kHz

 

30

 

 

30

 

dB

 

 

 

 

 

 

 

 

 

 

 

OUTPUT CHARACTERISTICS

 

 

 

 

 

 

 

 

 

 

–3 dB Bandwidth

VOUT = 100 mV rms

 

35

 

 

35

 

MHz

Slew Rate

 

 

275

 

 

275

 

V/μs

Peak Output2

RL ≥ 500 Ω

± 2.5

± 3

 

± 2.5

± 3

 

V

Output Impedance

f ≤ 10 MHz

 

2

 

 

2

 

Ω

Output Short-Circuit Current

 

 

50

 

 

50

 

mA

Group Delay Change vs. Gain

f = 3 MHz; Full Gain Range

 

± 2

 

 

± 2

 

ns

Group Delay Change vs. Frequency

VG = 0 V, f = 1 MHz to 10 MHz

 

± 2

 

 

± 2

 

ns

Total Harmonic Distortion

RL= 200 Ω, VOUT = ± 1 V Peak, Rpd = 1 kΩ

 

–60

 

 

–60

 

dBc

ACCURACY

 

 

 

 

 

 

 

 

 

 

AD600

 

 

 

 

 

 

 

 

 

 

Gain Error

0 dB to 3 dB Gain

0

+0.5

+1

–0.5

+0.5

+0.5

dB

 

3 dB to 37 dB Gain

–0.5

± 0.2

+0.5

–0.1

± 0.2

+1.0

dB

 

37 dB to 40 dB Gain

–1

–0.5

0

–1.5

–0.5

+0.5

dB

Maximum Output Offset Voltage3

VG = 625 mV to +625 mV

 

10

50

 

10

65

mV

Output Offset Variation

VG = 625 mV to +625 mV

 

10

50

 

10

65

mV

AD602

 

 

 

 

 

 

 

 

 

 

Gain Error

–10 dB to –7 dB Gain

0

+0.5

+1

–0.5

+0.5

+1.5

dB

 

–7 dB to 27 dB Gain

–0.5

± 0.2

+0.5

0.1

± 0.2

+1.0

dB

 

27 dB to 30 dB Gain

–1

–0.5

0

–1.5

–0.5

+0.5

dB

Maximum Output Offset Voltage3

VG = 625 mV to +625 mV

 

5

30

 

10

45

mV

Output Offset Variation

VG = 625 mV to +625 mV

 

5

30

 

10

45

mV

GAIN CONTROL INTERFACE

 

 

 

 

 

 

 

 

 

 

Gain Scaling Factor

3 dB to 37 dB (AD600); –7 dB to 27 dB (AD602)

31.7

32

32.3

30.5

32

33.5

dB/V

Common-Mode Range

 

–0.75

 

2.5

–0.75

 

2.5

V

Input Bias Current

 

 

0.35

1

 

0.35

1

μA

Input Offset Current

 

 

10

50

 

10

50

nA

Differential Input Resistance

Pins I to 16; Pins 8 to 9

 

15

 

 

15

50

Response Rate

Full 40 dB Gain Change

 

40

 

 

40

 

dB/μs

 

 

 

 

 

 

 

 

 

 

 

SIGNAL GATING INTERFACE

 

 

 

 

 

 

 

 

 

 

Logic Input “LO” (Output ON)

 

 

 

0.8

 

 

0.8

V

Logic Input “HI” (Output OFF)

 

2.4

 

 

2.4

 

 

V

Response Time

ON to OFF, OFF to ON

 

0.3

 

 

0.3

 

μs

Input Resistance

Pins 4 to 3 Pins 5 to 6

 

30

 

 

30

 

Output Gated OFF

 

 

 

 

 

 

 

 

 

 

Output Offset Voltage

 

 

± 10

6100

 

± 10

6400

mV

Output Noise Spectral Density

 

 

65

 

 

65

 

nV/√

Hz

 

Signal Feedthrough @ 1 MHz

 

 

 

 

 

 

 

 

 

 

AD600

 

 

–80

 

 

–80

 

dB

AD602

 

 

–70

 

 

–70

 

dB

 

 

 

 

 

 

 

 

 

 

 

POWER SUPPLY

 

 

 

 

 

 

 

 

 

 

Specified Operating Range

 

± 4.75

 

± 5.25

± 4.75

 

± 5.25

V

Quiescent Current

 

 

11

12.5

 

11

14

mA

 

 

 

 

 

 

 

 

 

 

 

NOTES

1Typical open or short-circuited input; noise is lower when system is set to maximum gain and input is short-circuited. This figure includes the effects of both voltage and current noise sources.

2Using resistive loads of 500 Ω or greater, or with the addition of a 1 kΩ pull-down resistor when driving lower loads

3The dc gain of the main amplifier in the AD600 is X113; thus an input offset of only 100 μV becomes an 11.3 mV output offset. In the AD602, the amplifier’s gain is X35.7; thus, an input offset of 100 μV becomes a 3.57 mV output offset.

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. All min and max specifications guaranteed, although only those shown in boldface are tested on all production units.

Specifications subject to change without notice.

–2–

REV. A

Image 2
Contents Functional Block Diagram Product DescriptionREV. a Ordering Guide Connection DiagramAbsolute Maximum RATINGS1 PIN DescriptionTheory of Operation Noise PerformanceGain-Control Interface Signal-Gating InputsSequential Mode Maximum S/N Ratio Common-Mode RejectionLow Ripple Mode Minimum Gain Error Where VC is the applied control voltageParallel Mode Simplest Gain-Control Interface AD600/AD602 Applications Low Noise AGC Amplifier with 80 dB Gain Range Low Noise, 6 dB PreamplifierTable I. Measured Preamplifier Performance AD600/AD602 AD600/AD602 U1 AD600 DB Output of ’s Circuit Is Linear Over an 80 dB Range RMS Responding AGC Circuit with 100 dB Dynamic Range Gain Error for Without the 2 dB Offset Modification DB RMS/AGC System with Optimal S/N Ratio Sequential Gain0dB Adjust AD600/AD602 AD600/AD602-Typical Performance Characteristics Gating Feedthrough to Output, Gating Off to On Pin Soic R-16 Package Outline DimensionsPin Plastic DIP N-16 Package Pin Cerdip Q-16 Package

AD600, AD602 specifications

Analog Devices, a leader in high-performance signal processing, offers the AD602 and AD600, two versatile RF amplifiers known for their impressive performance in a variety of applications. The AD602 is a dual-channel, low-noise variable gain amplifier (VGA), while the AD600 is a similar VGA but designed for single-channel applications. Both devices are highly regarded in the fields of communications, instrumentation, and imaging, as they provide outstanding performance in amplifying weak signals.

The AD602 features a gain range of -6 dB to +40 dB, allowing for precise control of the output signal strength. This flexibility makes it well-suited for applications such as IF amplification, where signal levels can vary significantly. The device also includes a low distortion characteristic, enabling it to maintain signal integrity even when handling larger input signals. With a wide bandwidth spanning from DC to 100 MHz, the AD602 caters to applications requiring both low-frequency and high-frequency performance.

On the other hand, the AD600 shares many similarities with the AD602 but offers slightly different characteristics. With a gain range of -1.5 dB to +40 dB, it offers a broader range of control for its output signal strength. Like the AD602, its low distortion and high linearity are crucial for high-fidelity signal processing. The AD600 is also capable of delivering a high output current, making it favorable for driving capacitive loads effectively.

Both devices employ Analog Devices' proprietary topology that minimizes the effects of thermal drift and achieves high levels of performance under varying conditions. They are built with advanced manufacturing processes that ensure stability and reliability in industrial applications. Integrated with differential inputs, these devices help eliminate common-mode noise, thus improving overall signal quality.

The AD602 and AD600 are equipped with comprehensive protection features, enabling them to withstand overload conditions without compromising performance. Their low noise figure contributes to excellent low-level signal recovery, making these amplifiers ideal for radar receivers, medical imaging systems, and satellite communication.

In summary, the AD602 and AD600 by Analog Devices stand out as powerful, reliable variable gain amplifiers with robust performance characteristics. Their flexibility in gain control, low distortion, high linearity, and advanced protection features make them invaluable components in modern electronic systems, enhancing the quality and reliability of signal processing applications across various industries.