AD8335

更新时间： 2024-11-21 04:31:03

品牌	Logo	应用领域
亚德诺 - ADI		放大器
页数	文件大小	规格书
24页	887K
描述
Quad Low Noise, Low Cost Variable Gain Amplifier

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

AD8335 数据手册

Quad Low Noise, Low Cost

Variable Gain Amplifier

AD8335

FUNCTIONAL BLOCK DIAGRAM

FEATURES

Low noise preamplifier (PrA)

Voltage noise = 1.3 nV/√Hz typical

Current noise = 2.4 pA/√Hz typical

NF = 7 dB (R_S= R_IN= 50 Ω)

Single-ended input; V_INmax = 625 mV p-p

Active input match

Input SNR (noise bandwidth = 20 MHz) = 92 dB

VGA

Differential output

61 60

59 58

53 55

VOH1

PIP1 63

ATTEN

–48dB TO

0dB

20dB

28dB

VMD1

18dB

PMD1 64

VOL1

VGN1

SL12

VGN2

PMD2

PIP2

INTERPOLATOR GAIN INT 56

VMD2

18dB

PON2

POP2

VIP2

INTERPOLATOR GAIN INT 54

V_OUTmax = 5 V p-p, R_L= 500 Ω differential

VOL2

Gain range (8 dB output gain step)

−10 dB to +38 dB—LO gain mode

−2 dB to +46 dB—HI gain mode

Accurate linear-in-dB gain control

PrA + VGA performance

−3 dB bandwidth of 70 MHz

Excellent overload performance

Supply: 5 V

ATTEN

–48dB TO

0dB

20dB

28dB

VIN2

VOH2

VOH3

AD8335

VIN3 10

VIP3 11

ATTEN

–48dB TO

0dB

20dB

28dB

VOL3

VGN3

POP3 12

PON3 13

GAIN INT 27

INTERPOLATOR

Power consumption

SL34

VGN4

VOL4

PIP3 15

95 mW/channel (380 mW total)

65 mW/channel (PrA off; 260 mW total)

Power-down

VMD3

VMD4

18dB

GAIN INT

PMD3 16

PMD4 17

PIP4 18

ATTEN

–48dB TO

0dB

20dB

28dB

VOH4

APPLICATIONS

Medical imaging (ultrasound, gamma cameras)

20 21

23 28 26

Sonar

Test and measurement

Figure 1.

Precise, stable wideband gain control

GENERAL DESCRIPTION

The AD8335 is a quad variable gain amplifier (VGA) with low

noise preamplifier intended for cost and power sensitive

applications. Each channel features a gain range 48 dB, fully

differential signal paths, active input preamplifier matching, and

user-selectable maximum gains of 46 dB and 38 dB. Individual

gain controls are provided for each channel.

Assuming a 20 MHz noise bandwidth (NBW), the Nyquist

frequency for a 40 MHz ADC, the input SNR is 92 dB. The

HILO pin optimizes the output SNR for 10-bit and 12-bit

ADCs with 1 V p-p or 2 V p-p full-scale (FS) inputs.

Channels 1 and 2 are enabled through the EN12 pin while

Channels 3 and 4 are enabled through the EN34 pin. For VGA

only applications, the PrAs can be powered down, significantly

reducing power consumption.

The preamplifier (PrA) has a single-ended to differential gain

of ×8 (18.06 dB) and accepts input signals ≤ 625 mV p-p. PrA

noise is 1.2 nV/√Hz and the combined input referred voltage

noise of the PrA and VGA is 1.3 nV/√Hz at maximum gain.

The AD8335 is available in a 64-lead lead frame chip scale

(9 mm × 9 mm) package for the industrial temperature range

of −40°C to +85°C.

Rev. 0

Information furnished by Analog Devices is believed to be accurate and reliable.

However, no responsibility is assumed by Analog Devices for its use, nor for any

infringements of patents or other rights of third parties that may result from its use.

Specifications subject to change without notice. No license is granted by implication

or otherwise under any patent or patent rights of Analog Devices. Trademarks and

registered trademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.326.8703

www.analog.com

12 3 4 5 6 7...24

中文翻译

下载PDF

与AD8335相关器件

型号	品牌	获取价格	描述	数据表
AD8335ACPZ	ADI	获取价格	Quad Low Noise, Low Cost Variable Gain Amplifier
AD8335ACPZ-REEL	ADI	获取价格	Quad Low Noise, Low Cost Variable Gain Amplifier
AD8335ACPZ-REEL7	ADI	获取价格	Quad Low Noise, Low Cost Variable Gain Amplifier
AD8335-EVAL	ADI	获取价格	Quad Low Noise, Low Cost Variable Gain Amplifier
AD8336	ADI	获取价格	General-Purpose, −55 to +125, Wide Bandwidth, DC-Coupled VGA
AD8336ACPZ	ADI	获取价格	General-Purpose, −55 to +125, Wide Bandwidth, DC-Coupled VGA
AD8336ACPZ-R7	ADI	获取价格	General-Purpose, −55 to +125, Wide Bandwidth, DC-Coupled VGA
AD8336ACPZ-RL	ADI	获取价格	General-Purpose, −55 to +125, Wide Bandwidth, DC-Coupled VGA
AD8336ACPZ-WP	ADI	获取价格	General-Purpose, −55 to +125, Wide Bandwidth, DC-Coupled VGA
AD8336-EVALZ	ADI	获取价格	General-Purpose, −55 to +125, Wide Bandwidth, DC-Coupled VGA

与AD8335相关文章

解析光耦仿真器：升级光耦合器技术的必要性
2024-11-18

30
英伟达新一代Blackwell GPU过热问题致交付延迟
2024-11-18

22
国产厂商思特威CMOS图像传感器芯片单月出货超1亿颗，技术创新引领行业发展
2024-11-14

51
台积电5nm和3nm产能利用率达100%，半导体行业景气度持续攀升
2024-11-14

49

产品中心

服务支持

精选活动

关于我们

帮助中心

AD8335

AD8335 数据手册

与AD8335相关器件

与AD8335相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

AD8335

AD8335 数据手册

与AD8335相关器件

与AD8335相关文章

您还可以找

您在本页遇到什么问题？