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參數(shù)資料
| 型號： | AD8369 |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | 運(yùn)動控制電子 |
| 英文描述： | 45 dB Digitally Controlled VGA LF to 600 MHz |
| 中文描述： | 45分貝的數(shù)字控制VGA低頻至600兆赫 |
| 文件頁數(shù)： | 1/24頁 |
| 文件大小： | 968K |
| 代理商： | AD8369 |
REV. 0
AD8369
*
45 dB Digitally Controlled VGA
LF to 600 MHz
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. 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 companies.
Tel: 781/329-4700 Fax: 781/326-8703
www.analog.com*
Patents Pending
FUNCTIONAL BLOCK DIAGRAM
BIAS
GAIN CODE DECODE
FILT
VPOS
PWUP
SENB
DENB
BIT3
BIT0
BIT2
BIT1
OPHI
OPLO
CMDC
COMM
COMM
INLO
INHI
Gm CELLS
3dB STEP
FEATURES
Digitally Controlled Variable Gain in 3 dB Steps
–5 dB to +40 dB (R
L
= 1 k
–10 dB to +35 dB (R
L
= 200
Less than 0.2 dB Flatness over a +20 MHz Bandwidth
up to 380 MHz
4-Bit Parallel or 3-Wire Serial Interface
Differential 200
Input and Output Impedance
Single 3.0 V–5.5 V Supply
Draws 37 mA at 5 V
Power-Down <1 mA Maximum
)
)
APPLICATIONS
Cellular/PCS Base Stations
IF Sampling Receivers
Fixed Wireless Access
Wireline Modems
Instrumentation
OPHI and OPLO. The overall gain depends upon the source
and load impedances due to the resistive nature of the input and
output ports.
Digital control of the AD8369 is achieved using either a serial or
a parallel interface. The mode of digital control is selected by
connecting a single pin (SENB) to ground or the positive sup-
ply. Digital control pins can be driven with standard CMOS
logic levels.
The AD8369 may be powered on or off by a logic level applied
to the PWUP pin. For a logic high, the chip powers up rapidly
to its nominal quiescent current of 37 mA at 25oC. When low,
the total dissipation drops to less than a few milliwatts.
The AD8369 is fabricated on an Analog Devices proprietary, high
performance 25 GHz silicon bipolar IC process and is available
in a 16-lead TSSOP package for the industrial temperature range
of –40
∞
C to +85
∞
C. A populated evaluation board is available.
PRODUCT DESCRIPTION
The AD8369 is a high performance digitally controlled variable
gain amplifier (VGA) for use from low frequencies to a –3 dB
frequency of 600 MHz at all gain codes. The AD8369 delivers
excellent distortion performance: the two-tone, third-order
intermodulation distortion is –69 dBc at 70 MHz for a 1 V p-p
composite output into a 1 k
W
load. The AD8369 has a nominal
noise figure of 7 dB when at maximum gain, then increases with
decreasing gain.
Output IP3 is +19.5 dBm at 70 MHz into a
1 k
W
load and remains fairly constant over the gain range.
The signal input is applied to pins INHI and INLO. Variable gain
is achieved via two methods. The 6 dB gain steps are implemented
using a discrete X-AMP
structure, in which the input signal is
progressively attenuated by a 200
W
R-2R ladder network that
also sets the input impedance; the 3 dB steps are implemented at
the output of the amplifier. This combination provides very
accurate 3 dB gain steps over a span of 45 dB. The output imped-
ance is set by on-chip resistors across the differential output pins,
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD8369ARU | 45 dB Digitally Controlled VGA LF to 600 MHz |
| AD8369ARU-REEL7 | 45 dB Digitally Controlled VGA LF to 600 MHz |
| AD8370 | LF to 750 MHz Digitally Controlled VGA |
| AD8370-EVAL | LF to 750 MHz Digitally Controlled VGA |
| AD8370ARE | LF to 750 MHz Digitally Controlled VGA |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD8369ARM | 制造商:Analog Devices 功能描述:500 MHZ DIGITAL VGA - Bulk |
| AD8369ARU | 制造商:Analog Devices 功能描述:SP Amp Variable Gain Amp Single 5.5V 16-Pin TSSOP Tube 制造商:Rochester Electronics LLC 功能描述:TSSOP IF DIGITAL CONTROL VGA - Bulk 制造商:Analog Devices 功能描述:IC SEMICONDUCTOR ((NS)) |
| AD8369ARU-REEL | 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel |
| AD8369ARU-REEL7 | 制造商:Analog Devices 功能描述:SP Amp Variable Gain Amp Single 5.5V 16-Pin TSSOP T/R 制造商:Rochester Electronics LLC 功能描述:TSSOP IF DIGITAL CONTROL VGA - Tape and Reel |
| AD8369ARUZ | 功能描述:IC AMP VGA 16TSSOP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:X-AMP® 標(biāo)準(zhǔn)包裝:2,500 系列:- 放大器類型:通用 電路數(shù):4 輸出類型:- 轉(zhuǎn)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(yīng)商設(shè)備封裝:14-TSSOP 包裝:帶卷 (TR) 其它名稱:LM324ADTBR2G-NDLM324ADTBR2GOSTR |
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