AD603AQ Analog Devices Inc, AD603AQ Datasheet
AD603AQ
Specifications of AD603AQ
Available stocks
Related parts for AD603AQ
AD603AQ Summary of contents
Page 1
FEATURES Linear in dB Gain Control Pin Programmable Gain Ranges – +31 dB with 90 MHz Bandwidth with 9 MHz Bandwidth Any Intermediate Range, e.g., – +41 dB with 30 ...
Page 2
AD603–SPECIFICATIONS Model Parameter INPUT CHARACTERISTICS Input Resistance Input Capacitance 1 Input Noise Spectral Density Noise Figure 1 dB Compression Point Peak Input Voltage OUTPUT CHARACTERISTICS –3 dB Bandwidth Slew Rate 2 Peak Output Output Impedance Output Short-Circuit Current Group Delay ...
Page 3
... JA JC 8-Lead CERDIP Package 140∞C/ 15∞C Part Number AD603AR AD603AQ AD603SQ/883B* AD603-EB AD603ACHIPS AD603AR-REEL AD603AR-REEL7 *Refer to AD603 Military data sheet. Also available as 5962-9457203MPA. 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 AD603 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges ...
Page 4
AD603 –Typical Performance Characteristics 2.50 45MHz 2.00 1.50 70MHz 1.00 10.7MHz 0.50 0.00 455kHz –0.50 70MHz –1.00 –1.50 –0.5 –0.4 –0.3 –0.2 –0.1 0.0 0.2 0.3 0.4 0.5 0.6 GAIN VOLTAGE (Volts) TPC 1. Gain Error vs. Gain Control Voltage ...
Page 5
FREQUENCY (Hz) TPC 10. Input Impedance vs. Frequency (Gain = –10 dB) 1V 100 200ns TPC 13. Gain-Control Channel Response Time 3.5V INPUT GND 500mV/DIV 500mV OUTPUT ...
Page 6
AD603 +5V 0.1 F HP3326A DUAL CHANNEL HP3585A 50 SYNTHESIZER AD603 SPECTRUM 100 ANALYZER 0.1 F –5V DATEL DVC 8500 TPC 19. Test Setup Used for: Noise Figure, Third Order Intercept and 1 dB Compression Point Measurements ...
Page 7
THEORY OF OPERATION The AD603 comprises a fixed-gain amplifier, preceded by a broadband passive attenuator 42.14 dB, having a gain-control scaling factor per volt. The fixed gain is laser-trimmed in two ranges, to ...
Page 8
AD603 The Gain-Control Interface The attenuation is controlled through a differential, high impedance (50 MW) input, with a scaling factor which is laser-trimmed per volt, that is, 25 mV/dB. An internal band gap reference ensures stability of ...
Page 9
Optionally, when a resistor is placed from FDBK to COMM, higher gains can be achieved. This fourth mode is of limited value because of the low bandwidth and the elevated output off- sets thus not included in Figure ...
Page 10
AD603 INPUT 0dB GPOS INPUT 0dB GPOS V = 1.0V C INPUT 0dB GPOS V = 2.0V C Figure 6. AD603 Gain Control Input Calculations for Sequential Control Operation +31.07dB +31.07dB A1 * +10dB * –11.07dB ...
Page 11
V C Figure 9. SNR for Cascaded Stages—Sequential Control 2.0 1.5 1.0 0.5 0.0 –0.5 –1.0 –1.5 –2.0 –0.2 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 ...
Page 12
AD603 3.0 2.5 2.0 1.5 1.0 0.5 0.0 –0.5 –1.0 –1.5 –2.0 –2.5 –3.0 –0.1 0.0 0.1 0.2 0.3 0.4 0.5 0 Figure 13. Gain Error for Cascaded Stages— Low Ripple Mode ...
Page 13
The automatic gain control voltage, V time integral of this error current. In order for V thus the gain) to remain insensitive to short-term amplitude fluctuations in the output signal, the rectified current in Q1 must, on average, ...
Page 14
AD603 OUTLINE DIMENSIONS 8-Lead Ceramic Dual In-Line Package [CERDIP] (Q-8) Dimensions shown in inches and (millimeters) 0.005 (0.13) 0.055 (1.40) MIN MAX 8 5 0.310 (7.87) 0.220 (5.59) PIN 0.100 (2.54) BSC 0.405 (10.29) MAX 0.060 (1.52) ...
Page 15
Revision History Location 8/03 Data Sheet changed from REV REV. E. Updated Format ............................................................................................................................................................... Changes to SPECIFICATIONS .......................................................................................................................................... 2 Changes to TPCs ..................................................................................................................................................... 4 Changes to Sequential Mode (Optimal S/N Ratio) section ................................................................................................... 9 Change ...
Page 16
–16– ...