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AD8592 датащи(PDF) 11 Page - Analog Devices

номер детали AD8592
подробное описание детали  CMOS Single Supply Rail-to-Rail Input/Output Operational Amplifiers with Shutdown
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производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
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AD8592 датащи(HTML) 11 Page - Analog Devices

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AD8591/AD8592/AD8594
–11–
REV. A
The U1-A amplifier is configured as a unity gain buffer driving a
1 nF capacitor. The input signal is connected to the noninverting
input, while the sample clock controls the shutdown for that
amplifier. When the sample clock is high, the U1-A amplifier is
active and the output follows VIN. Once the sample clock goes
low, U1-A shuts down with the output of the amplifier going to
a high impedance state, holding the voltage on the C1 capacitor.
The U1-B amplifier is used as a unity gain buffer to prevent load-
ing on C1. Because of the low input bias current of the U1-B
CMOS input stage and the high impedance state of the U1-A
output in shutdown, there is very little voltage droop from C1
during the Hold period. This circuit can be used with sample
frequencies as high as 500 kHz and as low as below 1 Hz. Even
lower voltage droop can be achieved for very low sample rates
by increasing the value of C1.
Direct Access Arrangement for PCMCIA Modems
(Telephone Line Interface)
Figure 38 illustrates a +5 V transmit/receive telephone line
interface for 600
Ω systems. It allows full duplex transmission of
signals on a transformer-coupled 600
Ω line in a differential
manner. Amplifier 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 AD8594’s high output
current drive and low dropout voltages, the largest signal avail-
able on a single +5 V supply is approximately 4.5 V p-p into a
600
Ω transmission system. Amplifier A3 is configured as a
difference amplifier for two reasons: (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. Amplifier A4’s gain can be adjusted 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 AD8594 16-lead
TSSOP or SOIC footprint, and this circuit offers a compact,
cost effective solution.
R7
10k
R8
10k
+5V
6.2V
6.2V
TRANSMIT
TxA
RECEIVE
RxA
C1
0.1 F
R1
10k
R2
9.09k
2k
P1
Tx GAIN
ADJUST
A1
A2
A3
A4
A1, A2 = 1/2 AD8592
A3, A4 = 1/2 AD8592
R3
360
1:1
T1
TO TELEPHONE
LINE
1
2
3
9
8
7
2
3
1
8
7
9
10 F
R5
10k
R6
10k
R9
10k
R14
14.3k
R10
10k
R11
10k
R12
10k
R13
10k
C2
0.1 F
P2
Rx GAIN
ADJUST
2k
ZO
600
MIDCOM
671-8005
SHUTDOWN
6
5
6
5
Figure 38. A Single Supply Direct Access Arrangement for
PCMCIA Modems
Single Supply Differential Line Driver
Figure 39 shows a single supply differential line driver circuit that
can drive a 600
Ω load with less than 0.7% distortion from 20 Hz
to 15 kHz with an input signal of 4 V p-p and a single +5 V supply.
The design uses an AD8594 to mimic the performance of a fully
balanced transformer based solution. However, this design occu-
pies much less board space while maintaining low distortion and
can operate down to dc. Like the transformer based design, either
output can be shorted to ground for unbalanced line driver applica-
tions without changing the circuit gain of 1.
RL
600
C1
22 F
A2
9
8
7
3
1
2
A1
+5V
R1
10k
R2
10k
R11
10k
R7
10k
8
7
7
A1
+5V
+5V
R8
100k
R9
100k
C2
1 F
R12
10k
R14
50
A2
1
2
3
R3
10k
R6
10k
R13
10k
C3
47 F
VO1
VO2
C4
47 F
A1, A2 = 1/2 AD8592
GAIN = R3
R2
SET: R7, R10, R11 = R2
SET: R6, R12, R13 = R3
VIN
R10
10k
R5
50
10
4
10
4
9
Figure 39. A Low Noise, Single Supply Differential
Line Driver
R8 and R9 set up the common-mode output voltage equal to
half of the supply voltage. C1 is used to couple the input signal
and can be omitted if the input’s dc voltage is equal to half of
the supply voltage.
The circuit can also be configured to provide additional gain if
desired. The gain of the circuit is:
A
V
V
R
R
V
OUT
IN
==
3
2
(7)
Where:
VOUT = VO1 – VO2,
R2 = R7 = R10 = R11 and,
R3 = R6 = R12 = R13


Аналогичный номер детали - AD8592

производительномер деталидатащиподробное описание детали
logo
Analog Devices
AD8592 AD-AD8592 Datasheet
408Kb / 16P
   CMOS Single-Supply, Rail-to-Rail Input/Output Operational Amplifiers with Shutdown
REV. B
AD8592 AD-AD8592 Datasheet
706Kb / 20P
   Low Power, 3.6 MHz, Low Noise, Rail-to - Rail Output, Operational Amplifiers
REV. D
AD8592 AD-AD8592 Datasheet
804Kb / 19P
   Low Power, 3.6 MHz, Low Noise, Rail-to-Rail Output, Operational Amplifiers
Rev. E
AD8592ARM-REEL AD-AD8592ARM-REEL Datasheet
408Kb / 16P
   CMOS Single-Supply, Rail-to-Rail Input/Output Operational Amplifiers with Shutdown
REV. B
AD8592ARMZ-REEL AD-AD8592ARMZ-REEL Datasheet
408Kb / 16P
   CMOS Single-Supply, Rail-to-Rail Input/Output Operational Amplifiers with Shutdown
REV. B
More results

Аналогичное описание - AD8592

производительномер деталидатащиподробное описание детали
logo
Analog Devices
AD8592 AD-AD8592_15 Datasheet
408Kb / 16P
   CMOS Single-Supply, Rail-to-Rail Input/Output Operational Amplifiers with Shutdown
Rev. B
AD8592ARMZ-REEL AD-AD8592ARMZ-REEL Datasheet
408Kb / 16P
   CMOS Single-Supply, Rail-to-Rail Input/Output Operational Amplifiers with Shutdown
REV. B
AD8594 AD-AD8594_15 Datasheet
408Kb / 16P
   CMOS Single-Supply, Rail-to-Rail Input/Output Operational Amplifiers with Shutdown
Rev. B
AD8594 AD-AD8594 Datasheet
408Kb / 16P
   CMOS Single-Supply, Rail-to-Rail Input/Output Operational Amplifiers with Shutdown
REV. B
AD8591 AD-AD8591_15 Datasheet
408Kb / 16P
   CMOS Single-Supply, Rail-to-Rail Input/Output Operational Amplifiers with Shutdown
Rev. B
OP250 AD-OP250 Datasheet
209Kb / 16P
   CMOS Single-Supply Rail-to-Rail Input/Output Operational Amplifiers
REV. 0
logo
National Semiconductor ...
LMV341 NSC-LMV341_14 Datasheet
1Mb / 35P
   RAIL-TO-RAIL OUTPUT CMOS OPERATIONAL AMPLIFIERS WITH SHUTDOWN
logo
Texas Instruments
LMV341 TI-LMV341 Datasheet
871Kb / 27P
[Old version datasheet]   RAIL-TO-RAIL OUTPUT CMOS OPERATIONAL AMPLIFIERS WITH SHUTDOWN
logo
Analog Devices
AD8602ARZ AD-AD8602ARZ Datasheet
350Kb / 24P
   Precision CMOS, Single-Supply, Rail-to-Rail, Input/Output Wideband Operational Amplifiers
Rev. G
AD8601 AD-AD8601_11 Datasheet
356Kb / 24P
   Precision CMOS, Single-Supply, Rail-to-Rail, Input/Output Wideband Operational Amplifiers
Rev. G
More results


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