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参数资料
| 型号： | AD8531 |
| 厂商： | Analog Devices, Inc. |
| 英文描述： | Low Cost, 250 mA Output Single-Supply Amplifiers(低成本,250mA输出,单电源放大器) |
| 中文描述： | 低成本，250 mA输出单电源放大器（低成本，250mA的输出，单电源放大器） |
| 文件页数： | 13/16页 |
| 文件大小： | 220K |
| 代理商： | AD8531 |
AD8531/AD8532/AD8534
REV. A
–13–
Direct Access Arrangement for T elephone Line Interface
Figure 42 illustrates a +5 V only transmit/receive telephone line
interface for 600
transmission systems. It allows full duplex
transmission of signals on a transformer coupled 600
line in a
differential manner. Amplifier A1 provides gain that can be ad-
justed to meet the modem output drive requirements. Both A1
and A2 are configured to apply the largest possible signal on a
single supply to the transformer. Because of the high output
current drive and low dropout voltage of the AD8531/AD8532/
AD8534s, the largest signal available on a single +5 V supply is
approximately 4.5 V p-p into a 600
transmission system.
Amplifier A3 is configured as a difference amplifier for two rea-
sons: (1) It prevents the transmit signal from interfering with
the receive signal and (2) it extracts the receive signal from the
transmission line for amplification by A4. A4’s gain can be ad-
justed in the same manner as A1’s to meet the modem’s input
signal requirements. Standard resistor values permit the use of
SIP (Single In-line Package) format resistor arrays. Couple this
with the AD8531/AD8532/AD8534’s 8-pin SOIC or T SSOP
footprint and this circuit offers a compact, cost-sensitive solution.
6.2V
6.2V
TRANSMIT
TXA
RECEIVE
RXA
C1
0.1μF
R1
10k
R2
9.09k
2k
P1
TX GAIN
ADJUST
A1
A2
A3
A4
A1, A2 = 1/2 AD8532
A3, A4 = 1/2 AD8532
R3
360
1:1
T1
TO TELEPHONE
LINE
1
2
3
7
6
5
2
3
1
6
5
7
10μF
R7
10k
R8
10k
R5
10k
R6
10k
R9
10k
R14
14.3k
R10
10k
R11
10k
R12
10k
R13
10k
C2
0.1μF
P2
RX GAIN
ADJUST
2k
Z
O
600
+5V DC
MIDCOM
671-8005
Figure 42. A Single-Supply Direct Access Arrange-
ment for Modems
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|---|---|
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| AD8538_07 | Low Power, Precision, Auto-Zero Op Amps |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD8531_08 | 制造商:AD 制造商全称:Analog Devices 功能描述:Low Cost, 250 mA Output, Single-Supply Amplifiers |
| AD85310001RTR | 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel 制造商:Analog Devices 功能描述: |
| AD8531AKS | 制造商:AD 制造商全称:Analog Devices 功能描述:Low Cost, 250 mA Output Single-Supply Amplifiers |
| AD8531AKS-R2 | 制造商:Analog Devices 功能描述:OP Amp Single GP R-R I/O 6V 5-Pin SC-70 T/R |
| AD8531AKS-REEL7 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述: |
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