Analog Devices AD600, AD602 manual Gating Feedthrough to Output, Gating Off to On

Page 19

AD600/AD602

5￿ 0mV

1￿ 00

90￿

OUTPUT

10￿

0￿ %

INPUT

￿

5V

 

 

 

￿1

00nS

 

 

 

 

 

Figure 44. Gating Feedthrough to Output, Gating Off to On

5￿ 00mV

1￿ 00

90￿

OUTPUT

10￿

0￿ %

INPUT

￿

1V

 

 

 

￿2

00nS

 

 

 

 

 

Figure 47. Input Stage Overload Recovery Time

5￿ 0mV

1￿ 00

90￿

OUTPUT

10￿

0￿ %

INPUT

￿

5V

 

 

 

￿1

00nS

 

 

 

 

 

Figure 45. Gating Feedthrough to Output, Gating On to Off

1V￿

1￿ 00

90￿

OUTPUT

10￿

0￿ %

INPUT

2￿ 00mV5￿ 00nS

Figure 48. Output Stage Overload Recovery Time

1V￿

1￿ 00

90￿

OUTPUT

10￿

0￿ %

1￿ 00mV5￿ 00nS

INPUT

Figure 46. Transient Response, Medium and High Gain

5￿ 00mV

1￿ 00

90￿

OUTPUT

10￿

0￿ %

INPUT

￿

1V

￿5

00nS

 

Figure 49. Transient Response Minimum Gain

 

+10

 

 

 

 

 

 

+5

AD600: G=20dB

 

 

 

 

AD602: G=10dB

 

 

 

 

 

 

 

 

 

0

BOTH: VCM =100mV RMS

 

 

 

–5

VS =±5V

 

 

 

 

RL=500Ω

 

 

 

 

 

 

 

 

dB

–10

TA=25°C

 

 

dB

–

–15

 

 

 

 

–

CMRR

 

AD600

 

 

PSRR

–20

 

 

 

 

 

 

 

 

 

 

–25

 

 

 

 

 

 

–30

 

 

 

AD602

 

 

–35

 

 

 

 

 

 

–40

 

 

 

 

 

 

1k

10k

100k

1M

10M

100M

 

 

 

FREQUENCY — Hz

 

+20

+10

0

–10

–20

–30

–40

–50

–60

–70

–80

100k

 

 

 

 

+10

 

 

 

 

 

 

 

 

0

AD600: CH1 G=40dB, VIN =0

 

 

 

 

 

 

 

CH2 G=20dB, VIN =100mV

 

 

 

 

 

 

 

 

 

 

 

 

–10

AD602: CH1 G=30dB, VIN =0

 

 

 

 

 

 

 

CH2 G=10dB, VIN =316mV

 

AD600

 

 

 

 

 

AD600

 

 

dB

–20

BOTH: VOUT =1V RMS, RS =50Ω,

 

 

 

 

 

 

 

 

R L=500Ω

 

 

 

 

 

–

–30

CROSSTALK=20log{CH2CH1 VVOUTIN }

 

 

 

 

CROSSTALK

 

AD602

 

 

–40

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

–50

 

 

 

 

 

AD600: G=40dB

 

–60

 

 

 

AD602

 

AD602: G=30dB

 

–70

 

 

 

 

BOTH: RL=500

Ω

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VIN =0V

 

–80

 

 

 

 

 

RS =50Ω

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

–90

 

 

 

 

1M

10M

 

100M

100k

1M

10M

100M

FREQUENCY – Hz

 

 

 

 

FREQUENCY – Hz

 

Figure 50. CMRR vs. Frequency

Figure 51. PSRR vs. Frequency

Figure 52. Crosstalk Between A1

 

 

and A2 vs. Frequency

REV. A

–19–

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Contents Product Description Functional Block DiagramREV. a PIN Description Connection DiagramAbsolute Maximum RATINGS1 Ordering GuideNoise Performance Theory of OperationCommon-Mode Rejection Signal-Gating InputsSequential Mode Maximum S/N Ratio Gain-Control InterfaceParallel Mode Simplest Gain-Control Interface Where VC is the applied control voltageLow Ripple Mode Minimum Gain Error AD600/AD602 Applications Table I. Measured Preamplifier Performance Low Noise, 6 dB PreamplifierLow Noise AGC Amplifier with 80 dB Gain Range 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 DB RMS/AGC System with Optimal S/N Ratio Sequential Gain Gain Error for Without the 2 dB Offset Modification0dB Adjust AD600/AD602 AD600/AD602-Typical Performance Characteristics Gating Feedthrough to Output, Gating Off to On Pin Cerdip Q-16 Package Outline DimensionsPin Plastic DIP N-16 Package Pin Soic R-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.
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