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參數(shù)資料
| 型號： | ADA4075-2ACPZ-RL |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 10/24頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC OPAMP GP 6.5MHZ DL LN 8LFCSP |
| 標準包裝： | 10,000 |
| 系列： | iPolar® |
| 放大器類型： | 通用 |
| 電路數(shù)： | 2 |
| 轉換速率： | 12 V/µs |
| 增益帶寬積： | 6.5MHz |
| 電流 - 輸入偏壓： | 30nA |
| 電壓 - 輸入偏移： | 300µV |
| 電流 - 電源： | 1.8mA |
| 電流 - 輸出 / 通道： | 40mA |
| 電壓 - 電源，單路/雙路(±)： | ±4.5 V ~ 18 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-UFDFN 裸露焊盤，CSP |
| 供應商設備封裝： | 8-LFCSP-WD |
| 包裝： | 帶卷 (TR) |
ADA4075-2
Data Sheet
Rev. C | Page 18 of 24
BALANCED LINE DRIVER
The circuit of Figure 67 shows a balanced line driver designed
for audio use. Such drivers are intended to mimic an output
transformer in operation, whereby the common-mode voltage
can be impressed by the load. Furthermore, either output can be
shorted to ground in single-ended applications without affecting
the overall operation.
Circuits of this type use positive and negative feedback to obtain a
high common-mode output impedance, and they are somewhat
notorious for component sensitivity and susceptibility to latch-up.
This circuit uses several techniques to avoid spurious behavior.
First, the 4-op-amp arrangement ensures that the input impedance
is load independent (the input impedance can become negative
with some configurations). Note that the output op amps are
packaged with the input op amps to maximize drive capability.
Second, the positive feedback is ac-coupled by C2 and C3, which
eliminates the need for offset trim. Because the circuit is ac-coupled
at the input, these capacitors do not have significant dc voltage
across them, thus tantalum types of capacitors can be used.
Finally, even with these precautions, it is vital that the positive
feedback be accurately controlled. This is partly achieved by
using 1% resistors. In addition, the following setup procedure
ensures that the positive feedback does not become excessive:
1. Set R11 to its midposition (or short the ends together,
whichever is easier) and temporarily short the negative
output to ground.
2. Apply a 10 V p-p sine wave at approximately 1 kHz to the
input and adjust R7 to provide 930 mV p-p at TEST (see
3. Remove the short from the negative output (and across
R11, if used) and adjust R11 until the output waveforms
are symmetric.
The overall gain of the driver is equal to 2, which provides an
extra 6 dB of headroom in balanced differential mode. The
output noise is about 109 dBV in a 20 kHz bandwidth.
07642-
073
C3
10F
R2
4.7k
OUT+
OUT–
1/2
ADA4075-2
R5
4.7k
R6
4.7k
R7
250
R8
100
R9
4.7k
R13
100
R4
4.7k
A2
1/2
ADA4075-2
A1
IN
C5
50pF
C1
10F
C2
10F
TEST
SYMMETRY
TRIM
FEEDBACK
TRIM
1/2
ADA4075-2
R12
4.7k
R11
250
R17
4.7k
R16
100
R10
4.7k
R15
4.7k
A4
C6
50pF
1/2
ADA4075-2
A3
C4
50pF
R14
100
R1
10k
NOTES
1. ALL RESISTORS SHOULD HAVE 1% TOLERANCE.
2. A1/A2 IN SAME PACKAGE; A3/A4 IN SAME PACKAGE.
R3
4.7k
R18
4.7k
Figure 67. Balanced Line Driver
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參數(shù)描述 |
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| ADA4075-2ARZ | 功能描述:IC OPAMP GP 6.5MHZ DUAL LN 8SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:iPolar® 產品培訓模塊:Differential Circuit Design Techniques for Communication Applications 標準包裝:1 系列:- 放大器類型:RF/IF 差分 電路數(shù):1 輸出類型:差分 轉換速率:9800 V/µs 增益帶寬積:- -3db帶寬:2.9GHz 電流 - 輸入偏壓:3µA 電壓 - 輸入偏移:- 電流 - 電源:40mA 電流 - 輸出 / 通道:- 電壓 - 電源，單路/雙路(±):3 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-VQFN 裸露焊盤，CSP 供應商設備封裝:16-LFCSP-VQ 包裝:剪切帶 (CT) 產品目錄頁面:551 (CN2011-ZH PDF) 其它名稱:ADL5561ACPZ-R7CT |
| ADA4075-2ARZ | 制造商:Analog Devices 功能描述:IC, OP-AMP, 6.5MHZ, 12V/ us, SOIC-8 |
| ADA4075-2ARZ-R7 | 功能描述:IC OPAMP GP 6.5MHZ DUAL LN 8SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:iPolar® 標準包裝:160 系列:- 放大器類型:通用 電路數(shù):4 輸出類型:滿擺幅 轉換速率:10 V/µs 增益帶寬積:9MHz -3db帶寬:- 電流 - 輸入偏壓:1pA 電壓 - 輸入偏移:250µV 電流 - 電源:730µA 電流 - 輸出 / 通道:28mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 5.5 V，±1.35 V ~ 2.75 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:16-SOIC N 包裝:管件 |
| ADA4075-2ARZ-RL | 功能描述:IC OPAMP GP 6.5MHZ DUAL LN 8SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:iPolar® 標準包裝:160 系列:- 放大器類型:通用 電路數(shù):4 輸出類型:滿擺幅 轉換速率:10 V/µs 增益帶寬積:9MHz -3db帶寬:- 電流 - 輸入偏壓:1pA 電壓 - 輸入偏移:250µV 電流 - 電源:730µA 電流 - 輸出 / 通道:28mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 5.5 V，±1.35 V ~ 2.75 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:16-SOIC N 包裝:管件 |
| ADA4077-1ARMZ | 功能描述:General Purpose Amplifier 1 Circuit 8-MSOP 制造商:analog devices inc. 系列:- 包裝:管件 零件狀態(tài):有效 放大器類型:通用 電路數(shù):1 輸出類型:- 壓擺率:1.2 V/μs 增益帶寬積:3.6MHz -3db 帶寬:- 電流 - 輸入偏置:1nA 電壓 - 輸入失調:10μV 電流 - 電源:400μA 電流 - 輸出/通道:22mA 電壓 - 電源，單/雙（±）:±2.5 V ~ 15 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應商器件封裝:8-MSOP 標準包裝:50 |
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