VCA820

現行

具 dB 線性控制可變增益放大器的 150MHz BW

立即訂購

產品規格表

document-pdfAcrobat VCA820 Wideband, > 40-dB Adjust Range, Linear in dB Variable Gain Amplifier datasheet (Rev. D) (英文) PDF | HTML

VCA820

現行

產品規格表

立即訂購

產品詳細資料

PGA/VGA

VGA

Number of channels

1

Vs (min) (V)

7

Vs (max) (V)

12

BW at Acl (MHz)

150

Acl, min spec gain (V/V)

10

Features

Analog Gain Set, Differential to Single-ended conversion

Slew rate (typ) (V/µs)

1700

Iq per channel (typ) (mA)

34

Gain (max) (dB)

40

Rating

Catalog

Operating temperature range (°C)

-40 to 85

PGA/VGA

VGA

Number of channels

1

Vs (min) (V)

7

Vs (max) (V)

12

BW at Acl (MHz)

150

Acl, min spec gain (V/V)

10

Features

Analog Gain Set, Differential to Single-ended conversion

Slew rate (typ) (V/µs)

1700

Iq per channel (typ) (mA)

34

Gain (max) (dB)

40

Rating

Catalog

Operating temperature range (°C)

-40 to 85

SOIC (D)

14

51.9 mm² 8.65 x 6

VSSOP (DGS)

10

14.7 mm² 3 x 4.9

150-MHz Small-Signal Bandwidth
137-MHz, 5-V_PP Bandwidth (G = +10 V/V)
0.1-dB Gain Flatness to 28 MHz
1700-V/µs Slew Rate
> 40-dB Gain Adjust Range
High Gain Accuracy: 20 dB ±0.4dB
High Output Current: 160 mA
APPLICATIONS
- AGC Receivers With RSSI
- Differential Line Receivers
- Pulse Amplitude Compensation
- Variable Attenuators

All other trademarks are the property of their respective owners

150-MHz Small-Signal Bandwidth
137-MHz, 5-V_PP Bandwidth (G = +10 V/V)
0.1-dB Gain Flatness to 28 MHz
1700-V/µs Slew Rate
> 40-dB Gain Adjust Range
High Gain Accuracy: 20 dB ±0.4dB
High Output Current: 160 mA
APPLICATIONS
- AGC Receivers With RSSI
- Differential Line Receivers
- Pulse Amplitude Compensation
- Variable Attenuators

All other trademarks are the property of their respective owners

The VCA820 is a dc-coupled, wideband, linear in dB, continuously variable, voltage-controlled gain amplifier. The VCA820 provides a differential input to single-ended conversion with a high-impedance gain control input, used to vary the gain down 40 dB from the nominal maximum gain set by the gain resistor (R_G) and feedback resistor (R_F).

The VCA820 internal architecture consists of two input buffers and an output current feedback amplifier stage, integrated with a multiplier core to provide a complete variable gain amplifier (VGA) system that does not require external buffering. The maximum gain is set externally with two resistors, providing flexibility in designs. The maximum gain is intended to be set between +2 V/V and +100 V/V. Operating from ±5-V supplies, the gain control voltage for the VCA820 adjusts the gain linearly in dB as the control voltage varies from 0 V to +2 V. For example, set for a maximum gain of +10 V/V, the VCA820 provides 20 dB, at +2-V input, to –20 dB at 0-V input of gain control range. The VCA820 offers excellent gain linearity. For a 20-dB maximum gain, and a gain-control input voltage varying between 1 V and 2 V, the gain does not deviate by more than ±0.4dB (maximum at +25°C).

The VCA820 is a dc-coupled, wideband, linear in dB, continuously variable, voltage-controlled gain amplifier. The VCA820 provides a differential input to single-ended conversion with a high-impedance gain control input, used to vary the gain down 40 dB from the nominal maximum gain set by the gain resistor (R_G) and feedback resistor (R_F).

The VCA820 internal architecture consists of two input buffers and an output current feedback amplifier stage, integrated with a multiplier core to provide a complete variable gain amplifier (VGA) system that does not require external buffering. The maximum gain is set externally with two resistors, providing flexibility in designs. The maximum gain is intended to be set between +2 V/V and +100 V/V. Operating from ±5-V supplies, the gain control voltage for the VCA820 adjusts the gain linearly in dB as the control voltage varies from 0 V to +2 V. For example, set for a maximum gain of +10 V/V, the VCA820 provides 20 dB, at +2-V input, to –20 dB at 0-V input of gain control range. The VCA820 offers excellent gain linearity. For a 20-dB maximum gain, and a gain-control input voltage varying between 1 V and 2 V, the gain does not deviate by more than ±0.4dB (maximum at +25°C).

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