VCA821IDGST

更新时间： 2024-11-03 12:26:35

品牌	Logo	应用领域
德州仪器 - TI		放大器
页数	文件大小	规格书
37页	1644K
描述
Ultra-Wideband, > 40dB Gain Adjust Range, Linear in dB VARIABLE GAIN AMPLIFIER

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VCA821IDGST 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	MSOP
包装说明：	TSSOP, TSSOP10,.19,20	针数：	14
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.33.00.01	Factory Lead Time：	1 week
风险等级：	1.53	模拟集成电路 - 其他类型：	ANALOG CIRCUIT
JESD-30 代码：	S-PDSO-G10	JESD-609代码：	e4
长度：	3 mm	湿度敏感等级：	2
负电源电压最大值（Vsup）：	-6 V	负电源电压最小值（Vsup）：	-3.5 V
标称负供电电压 (Vsup)：	-5 V	信道数量：	1
功能数量：	1	端子数量：	10
最高工作温度：	85 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	TSSOP
封装等效代码：	TSSOP10,.19,20	封装形状：	SQUARE
封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	峰值回流温度（摄氏度）：	260
电源：	+-5 V	认证状态：	Not Qualified
座面最大高度：	1.07 mm	子类别：	Other Analog ICs
最大供电电流 (Isup)：	36 mA	最大供电电压 (Vsup)：	6 V
最小供电电压 (Vsup)：	3.5 V	标称供电电压 (Vsup)：	5 V
表面贴装：	YES	技术：	BIPOLAR
温度等级：	INDUSTRIAL	端子面层：	Nickel/Palladium/Gold (Ni/Pd/Au)
端子形式：	GULL WING	端子节距：	0.5 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	3 mm	Base Number Matches：	1

VCA821IDGST 数据手册

VCA821

www.ti.com ....................................................................................................................................... SBOS407B–DECEMBER 2007–REVISED DECEMBER 2008

Ultra-Wideband, > 40dB Gain Adjust Range, Linear in dB

VARIABLE GAIN AMPLIFIER

FEATURES

DESCRIPTION

•

710MHz SMALL-SIGNAL BANDWIDTH

(G = +2V/V)

The VCA821 is a dc-coupled, wideband, linear in dB,

continuously variable, voltage-controlled gain

amplifier. It provides differential input to

single-ended conversion with a high-impedance gain

control input used to vary the gain down 40dB from

the nominal maximum gain set by the gain resistor

(R_G) and feedback resistor (R_F).

•

320MHz, 4V_PPBANDWIDTH (G = +10V/V)

0.1dB GAIN FLATNESS to 135MHz

2500V/µs SLEW RATE

•

> 40dB GAIN ADJUST RANGE

HIGH GAIN ACCURACY: 20dB ±0.3dB

HIGH OUTPUT CURRENT: ±90mA

The VCA821 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 6dB and 32dB. Operating from ±5V

supplies, the gain control voltage for the VCA821

adjusts the gain linearly in dB as the control voltage

varies from 0V to +2V. For example, set at a

maximum gain of 20dB, the VCA821 provides 20dB,

at V_G= +2V, to less than –20dB at V_G= 0V. The

VCA821 offers excellent gain linearity. For a 20dB

maximum gain, and a gain-control input voltage

varying between +1V and +2V, the gain does not

deviate by more than ±0.3dB (maximum at +25°C).

APPLICATIONS

•

AGC RECEIVERS with RSSI

DIFFERENTIAL LINE RECEIVERS

PULSE AMPLITUDE COMPENSATION

VARIABLE ATTENUATORS

VOLTAGE-TUNABLE ACTIVE FILTERS

R_F

V_IN1

+V_IN

R_G+

R_S

R_L

VCA821

R₁

C₁

R_G

V_OUT

C_L

R_G-

V_IN2

-V_IN

20W

R_S

VCA821 RELATED PRODUCTS

GAIN

ADJUST

RANGE

(dB)

INPUT

NOISE

(nV/√Hz)

SIGNAL

BANDWIDTH

(MHz)

Differential Equalizer

SINGLES

VCA810

—

DUALS

—

2.4

1.25

Equalized Frequency Response

VCA2612

VCA2613

VCA2615

VCA2617

—

0.8

4.1

8.2

6.0

8.2

6.0

Initial Frequency Response

of the VCA821 with RC Load

-3

-6

-9

—

VCA820

VCA821

VCA822

VCA824

150

420

150

420

-12

-15

-18

-21

-24

—

10M

100M

Frequency (Hz)

Differential Equalization of an RC Load

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

X2Y is a trademark of X2Y Attenuators LLC.

All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...37

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VCA821IDGST 替代型号

型号	品牌	替代类型	描述	数据表
VCA821IDGSR	TI	完全替代	Ultra-Wideband, > 40dB Gain Adjust Range, Linear in dB VARIABLE GAIN AMPLIFIER
VCA824IDGST	TI	类似代替	Ultra-Wideband, > 40dB Gain Adjust Range, Linear in V/V VARIABLE GAIN AMPLIFIER
VCA822IDGST	TI	类似代替	Wideband, > 40dB Gain Adjust Range, Linear in V/V VARIABLE GAIN AMPLIFIER

与VCA821IDGST相关器件

型号	品牌	获取价格	描述	数据表
VCA821IDGSTG4	TI	获取价格	SPECIALTY ANALOG CIRCUIT, PDSO14, GREEN, PLASTIC, MSOP-10
VCA821IDR	TI	获取价格	Ultra-Wideband, > 40dB Gain Adjust Range, Linear in dB VARIABLE GAIN AMPLIFIER
VCA821IDRG4	TI	获取价格	SPECIALTY ANALOG CIRCUIT, PDSO14, GREEN, PLASTIC, MS-012AB, SOIC-14
VCA822	TI	获取价格	Wideband, > 40dB Gain Adjust Range, Linear in V/V VARIABLE GAIN AMPLIFIER
VCA822ID	TI	获取价格	Wideband, > 40dB Gain Adjust Range, Linear in V/V VARIABLE GAIN AMPLIFIER
VCA822IDG4	TI	获取价格	Wideband, > 40dB Gain Adjust Range, Linear in V/V VARIABLE GAIN AMPLIFIER
VCA822IDGS	TI	获取价格	Wideband, > 40dB Gain Adjust Range, Linear in V/V VARIABLE GAIN AMPLIFIER
VCA822IDGSR	TI	获取价格	Wideband, > 40dB Gain Adjust Range, Linear in V/V VARIABLE GAIN AMPLIFIER
VCA822IDGSRG4	TI	获取价格	Wideband, > 40dB Gain Adjust Range, Linear in V/V VARIABLE GAIN AMPLIFIER
VCA822IDGST	TI	获取价格	Wideband, > 40dB Gain Adjust Range, Linear in V/V VARIABLE GAIN AMPLIFIER

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