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| 型號： | AD8370AREZ-RL7 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 1/28頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP VGA DIFF LN 16TSSOP |
| 標準包裝： | 1,000 |
| 放大器類型： | 可變增益 |
| 電路數(shù)： | 1 |
| 輸出類型： | 差分 |
| 轉換速率： | 5750 V/ns |
| -3db帶寬： | 750MHz |
| 電流 - 輸入偏壓： | 400pA |
| 電流 - 電源： | 79mA |
| 電壓 - 電源，單路/雙路(±)： | 3 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-TSSOP（0.173"，4.40mm）裸露焊盤 |
| 供應商設備封裝： | 16-TSSOP-EP |
| 包裝： | 帶卷 (TR) |
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LF to 750 MHz,
Digitally Controlled VGA
Data Sheet
Rev. B
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
2005-2011 Analog Devices, Inc. All rights reserved.
FEATURES
Programmable low and high gain (<2 dB resolution)
Low range: 11 dB to +17 dB
High range: 6 dB to 34 dB
Differential input and output
200 Ω differential input
100 Ω differential output
7 dB noise figure @ maximum gain
Two-tone IP3 of 35 dBm @ 70 MHz
3 dB bandwidth of 750 MHz
40 dB precision gain range
Serial 8-bit digital interface
Wide input dynamic range
Power-down feature
Single 3 V to 5 V supply
APPLICATIONS
Differential ADC drivers
IF sampling receivers
RF/IF gain stages
Cable and video applications
SAW filter interfacing
Single-ended-to-differential conversion
GENERAL DESCRIPTION
The AD8370 is a low cost, digitally controlled, variable gain
amplifier (VGA) that provides precision gain control, high IP3,
and low noise figure. The excellent distortion performance and
wide bandwidth make the AD8370 a suitable gain control
device for modern receiver designs.
For wide input, dynamic range applications, the AD8370 provides
two input ranges: high gain mode and low gain mode. A vernier,
7-bit, transconductance (gm) stage provides 28 dB of gain range
at better than 2 dB resolution and 22 dB of gain range at better than
1 dB resolution. A second gain range, 17 dB higher than the first,
can be selected to provide improved noise performance.
The AD8370 is powered on by applying the appropriate logic
level to the PWUP pin. When powered down, the AD8370
consumes less than 4 mA and offers excellent input to output
isolation. The gain setting is preserved when operating in a
power-down mode.
FUNCTIONAL BLOCK DIAGRAM
INHI
INLO
OPHI
OPLO
VCCO
OCOM
ICOM
VOCM
PWUP
VCCO
OCOM
VCCI
ICOM
BIAS CELL
SHIFT REGISTER
AND LATCHES
PRE
AMP
TRANSCONDUCTANCE
OUTPUT
AMP
11
6
1
16
4
14
13
12
5
9
8
3
2
10
7
15
DATA CLCK LTCH
AD8370
03692-001
Figure 1.
0
10
20
30
40
50
60
70
–30
–20
–10
0
10
20
30
40
VOLTAGE
GAIN
(
d
B)
VOLTAGE
GAIN
(
V
/V)
0
1020
3040
60
100
50
70
80
90
110 120 130
GAIN CODE
03692-002
CODE = LAST 7 BITS OF GAIN CODE
(NO MSB)
HIGH GAIN MODE
LOW GAIN MODE
GAIN
CODE
0.409
GAIN
CODE
0.059
Figure 2. Gain vs. Gain Code at 70 MHz
Gain control of the AD8370 is through a serial 8-bit gain control
word. The MSB selects between the two gain ranges, and the
remaining 7 bits adjust the overall gain in precise linear gain steps.
Fabricated on the ADI high speed XFCB process, the high
bandwidth of the AD8370 provides high frequency and low
distortion. The quiescent current of the AD8370 is 78 mA
typically. The AD8370 amplifier comes in a compact, thermally
enhanced 16-lead TSSOP package and operates over the
temperature range of 40°C to +85°C.
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相關代理商/技術參數(shù) |
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| AD8370-EVAL | 制造商:Analog Devices 功能描述:AD8370 EVAL BOARD - Bulk |
| AD8370-EVALZ | 制造商:Analog Devices 功能描述:- Bulk |
| AD8372 | 制造商:AD 制造商全稱:Analog Devices 功能描述:41 dB Range, 1 dB Step Size, Programmable Dual VGA |
| AD8372ACPZ-R7 | 功能描述:IC AMP VGA DIFF DUAL LN 32LFCSP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:2,500 系列:- 放大器類型:通用 電路數(shù):4 輸出類型:- 轉換速率:0.6 V/µs 增益帶寬積:1MHz -3db帶寬:- 電流 - 輸入偏壓:45nA 電壓 - 輸入偏移:2000µV 電流 - 電源:1.4mA 電流 - 輸出 / 通道:40mA 電壓 - 電源，單路/雙路(±):3 V ~ 32 V，±1.5 V ~ 16 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:14-TSSOP 包裝:帶卷 (TR) 其它名稱:LM324ADTBR2G-NDLM324ADTBR2GOSTR |
| AD8372ACPZ-R71 | 制造商:AD 制造商全稱:Analog Devices 功能描述:41 dB Range, 1 dB Step Size, Programmable Dual VGA |
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