VCA2613Y BURR-BROWN [Burr-Brown Corporation], VCA2613Y Datasheet
VCA2613Y
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VCA2613Y Summary of contents
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Dual, VARIABLE GAIN AMPLIFIER with Low-Noise Preamp FEATURES LOW NOISE PREAMP: Low Input Noise: 1.0nV/ Hz Active Termination Noise Reduction Switchable Termination Value 80MHz Bandwidth 5dB to 25dB Gain Differential In and Out LOW NOISE VARIABLE GAIN AMPLIFIER: Low Noise ...
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... CNTL = 0.2V CNTL = 3.0V 45dB Gain Change, MGS = 111 Operating, Both Channels www.ti.com ORDERING TRANSPORT NUMBER MEDIA, QUANTITY VCA2613Y/250 Tape and Reel, 250 VCA2613Y/2K Tape and Reel, 2000 = 5MHz, unless otherwise noted. IN VCA2613Y MIN TYP MAX UNITS 600 112 mV 3.5 nV/ 1.0 nV/ 0 ...
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PIN CONFIGURATION VCA NA IN VCA LNP NA OUT LNP PA 7 OUT SWFBA 8 FBA 9 COMP1A 10 11 COMP2A LNP PIN DESCRIPTIONS ...
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TYPICAL PERFORMANCE CURVES + +5V, load resistance = 500 A DDA DDB DDR The input to the preamp (LNP) is single-ended, and the output from the VCA is single-ended unless ...
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THEORY OF OPERATION The VCA2613 is a dual-channel system consisting of three primary blocks: a Low Noise Preamplifier (LNP), a Voltage Controlled Attenuator (VCA), and a Programmable Gain Amplifier (PGA). For greater system flexibility, an onboard multiplexer is provided for ...
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PGA OVERVIEW AND OVERALL DEVICE CHARACTERISTICS The differential output of the VCA attenuator is then amplified by the PGA circuit block. This post-amplifier is programmed by the same MGS bits that control the VCA attenuator, yielding an overall swept-gain amplifier ...
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R is the load resistor in the drains the resistor connected between the sources of the input S transistors Q and Q . The connections for various binations are brought out ...
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R S LNP Conventional Cable Termination FIGURE 5. Configurations for Active Feedback and Conven- tional Cable Termination. of two (6dB) before being ...
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Achieving the best active feedback architecture is difficult with conventional op amp circuit structures. The overall gain A must be negative in order to close the feedback loop, the input impedance must be high to maintain low current noise and ...
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The capacitance that is determined in Equation 5 should be added to the capacitance shown in Equation 4 to determine the overall bandwidth of the LNP. The LNP the LNP NB (pin 25) should be bypassed to ground by the ...
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Attenuator Input Control Input 0dB –4.5dB 0dB –4.5dB 0.3V FIGURE 12. Piecewise Approximation ...
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R S INPUT VCM FIGURE 13. Programmable Attenuator Section. comparator input threshold, the VCA output is blocked and an appropriate fixed DC level is substituted, providing fast and clean overload recovery. The basic ...
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PGA POST-AMPLIFIER—DETAIL Figure 18 shows a simplified circuit diagram of the PGA block. As described previously, the PGA gain is programmed with the same MGS bits which control the VCA maximum attenuation factor. Specifically, the PGA gain at each MGS ...
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... PACKAGING INFORMATION (1) Orderable Device Status VCA2613Y/250 ACTIVE VCA2613Y/2K ACTIVE (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design ...
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PFB (S-PQFP-G48) 0, 5,50 TYP 7,20 SQ 6,80 9,20 SQ 8,80 1,05 0,95 1,20 MAX NOTES: A. All linear dimensions are in millimeters. B. This drawing is subject to change without notice. C. Falls within JEDEC ...
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Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the ...