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參數資料
| 型號： | AD8132ARZ |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | Low Cost, High Speed Differential Amplifier |
| 中文描述： | 1 CHANNEL, VIDEO AMPLIFIER, PDSO8 |
| 封裝： | ROHS COMPLIANT, MS-012AA, SOIC-8 |
| 文件頁數： | 25/32頁 |
| 文件大小： | 456K |
| 代理商： | AD8132ARZ |
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AD8132
APPLICATIONS
ANALOG-TO-DIGITAL DRIVER
Many of the newer high speed ADCs are single-supply and have
differential inputs. Thus, the driver for these devices is able to
convert from a single-ended signal to a differential signal and
provide output common-mode level shifting in addition to
having low distortion and noise. The AD8132 conveniently
performs these functions when driving the
AD9203
, a 10-bit,
40 MSPS ADC.
Rev. F | Page 25 of 32
In Figure 73, a 1 V p-p signal drives the input of an AD8132
configured for unity gain. Both the AD8132 and the AD9203 are
powered from a single 3 V supply. A voltage divider biases V
OCM
at midsupply and in turn drives V
OUT, cm
to half of the supply
voltage. This is within the common-mode range of the AD9203.
Between the ADC and the driver is a 1-pole, differential filter that
helps to filter some of the noise and assists the switched-capacitor
inputs of the ADC. Each of the ADC inputs is driven by a 0.5 V p-p
signal that ranges from 1.25 V dc to 1.75 V dc. Figure 72 is an
FFT plot of the performance of the circuit when running at a
clock rate of 40 MSPS and an input frequency of 2.5 MHz.
BALANCED CABLE DRIVER
When driving a twisted pair cable, it is desirable to drive only a
pure differential signal onto the line. If the signal is purely differ-
ential (that is, fully balanced), and the transmission line is twisted
and balanced, there is minimum radiation of any signal.
The complementary electrical fields are confined mostly to the
space between the two twisted conductors and does not signif-
icantly radiate out from the cable. The current in the cable creates
magnetic fields that radiate to some degree. However, the amount
of radiation is mitigated by the twists, because for each twist,
the two adjacent twists have an opposite polarity magnetic field.
If the twist pitch is tight enough, these small magnetic field loops
contain most of the magnetic flux, and the magnetic farfield
strength is negligible.
10
0
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
2.5
5.0
7.5
10.0
12.5
15.0
17.5
20.0
2ND
3RD
4TH
5TH
7TH
8TH
9TH
6TH
f
S
= 40MHz
f
IN
= 2.5MHz
INPUT FREQUENCY (MHz)
O
FUND
0
Figure 72. FTT Response for AD8132 Driving AD9203
3V
0.1μF
10μF
+
3V
348
0.1μF
348
49.9
348
24.9
10k
10k
1V p-p
348
60.4
60.4
20pF
20pF
AINN
AINP
AVDD
DRVDD
AVSS
DRVSS
AD9203
DIGITAL
OUTPUTS
3V
0.1μF
0.1μF
AD8132
8
2
1
3
5
6
4
25
26
28
27
1
2
0
Figure 73. AD8132 Driving AD9203, a 10-Bit, 40 MSPS ADC
相關PDF資料 |
PDF描述 |
|---|---|
| AD8132ARZ-R7 | Low Cost, High Speed Differential Amplifier |
| AD8132 | Low-Cost, High-Speed Differential Amplifier |
| AD8132-EVAL | Low-Cost, High-Speed Differential Amplifier |
| AD8132AR | Low-Cost, High-Speed Differential Amplifier |
| AD8132AR-REEL | Low-Cost, High-Speed Differential Amplifier |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AD8132ARZ1 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Cost, High Speed Differential Amplifier |
| AD8132ARZ-R7 | 功能描述:IC AMP DIFF LDIST LP 70MA 8SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:1 系列:- 放大器類型:通用 電路數:4 輸出類型:滿擺幅 轉換速率:0.6 V/µs 增益帶寬積:1MHz -3db帶寬:- 電流 - 輸入偏壓:2pA 電壓 - 輸入偏移:1000µV 電流 - 電源:85µA 電流 - 輸出 / 通道:20mA 電壓 - 電源，單路/雙路(±):1.8 V ~ 6 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:14-SOICN 包裝:剪切帶 (CT) 產品目錄頁面:680 (CN2011-ZH PDF) 其它名稱:MCP6L04T-E/SLCT |
| AD8132ARZ-R71 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Cost, High Speed Differential Amplifier |
| AD8132ARZ-REEL7 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Cost, High Speed Differential Amplifier |
| AD8132ARZ-RL | 功能描述:IC AMP DIFF LDIST LP 70MA 8SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:50 系列:- 放大器類型:通用 電路數:2 輸出類型:滿擺幅 轉換速率:1.8 V/µs 增益帶寬積:6.5MHz -3db帶寬:4.5MHz 電流 - 輸入偏壓:5nA 電壓 - 輸入偏移:100µV 電流 - 電源:65µA 電流 - 輸出 / 通道:35mA 電壓 - 電源，單路/雙路(±):1.8 V ~ 5.25 V，±0.9 V ~ 2.625 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬） 供應商設備封裝:10-MSOP 包裝:管件 |
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