AD8532AR-REEL7 Analog Devices Inc, AD8532AR-REEL7 Datasheet - Page 16

• Manufacturer Part Number: AD8532AR-REEL7
• Description: IC OPAMP GP R-R CMOS 3MHZ 8SOIC
• Manufacturer: Analog Devices Inc

Specifications of AD8532AR-REEL7

• Rohs Status: RoHS non-compliant
• Amplifier Type: General Purpose
• Number Of Circuits: 2
• Output Type: Rail-to-Rail
• Slew Rate: 5 V/µs
• Gain Bandwidth Product: 3MHz
• Current - Input Bias: 5pA
• Voltage - Input Offset: 25000µV
• Current - Supply: 750µA
• Current - Output / Channel: 250mA
• Voltage - Supply, Single/dual (±): 2.7 V ~ 6 V, ±1.35 V ~ 3 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• -3db Bandwidth: -

AD8531/AD8532/AD8534
DIRECT ACCESS ARRANGEMENT FOR TELEPHONE
LINE INTERFACE
Figure 46 illustrates a 5 V only transmit/receive telephone line
interface for 600 Ω transmission systems. It allows full duplex
transmission of signals on a transformer-coupled 600 Ω line in
a differential manner. A1 provides gain that can be adjusted 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/AD8534,
the largest signal available on a single 5 V supply is approximately
4.5 V p-p into a 600 Ω transmission system. A3 is configured as
a difference amplifier for two reasons: it prevents the transmit
signal from interfering with the receive signal, and it extracts
the receive signal from the transmission line for amplification
by A4. The gain of A4 can be adjusted in the same manner as
that of A1 to meet the input signal requirements of the modem.
Standard resistor values permit the use of single in-line package
(SIP) format resistor arrays.
Rev. F | Page 16 of 20
TO TELEPHONE
600Ω
Z
A1, A2 = 1/2 AD8532
A3, A4 = 1/2 AD8532
O
LINE
Figure 46. Single-Supply Direct Access Arrangement for Modems
MIDCOM
671-8005
1:1
T1
6.2V
6.2V
10kΩ
R11
10kΩ
10kΩ
360Ω
R9
R12
R3
2
3
10kΩ
10kΩ
10kΩ
A3
R10
Tx GAIN
ADJUST
R5
R6
P1
2kΩ
1
1
7
A1
A2
10kΩ
R13
9.09kΩ
R2
6
5
2
3
14.3kΩ
6
5
R14
A4
10kΩ
R1
Rx GAIN
ADJUST
10µF
2kΩ
7
0.1µF
P2
C1
5V DC
0.1µF
C2
R7
10kΩ
R8
10kΩ
TRANSMIT
RECEIVE
TxA
RxA