AD8390A Datasheet PDF - Analog Devices
| Part Number | AD8390A | |
| Description | High Output Current Differential Amplifier | |
| Manufacturers | Analog Devices | |
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Data Sheet
Low Power, High Output Current
Differential Amplifier
AD8390A
FEATURES
Voltage feedback amplifier
Ideal for ADSL and ADSL2+ central office (CO) and
customer premises equipment (CPE) applications
Enables high current differential applications
Low power operation
Single- or dual-supply operation from 10 V (± 5 V)
up to 24 V (± 12 V)
5.5 mA total quiescent supply current for full power ADSL
and ADSL2+ CO applications
Adjustable supply current to minimize power
consumption
High output voltage and current drive
400 mA peak output drive current
44 V p-p differential output voltage
Low distortion
−70 dBc MTPR, 26 kHz to 1.1 MHz
−65 dBc MTPR, 1.1 MHz to 2.2 MHz
High speed: 260 V/μs differential slew rate
FUNCTIONAL BLOCK DIAGRAM
VCC
INP AD8390A
VCC
56kΩ
56kΩ
OUTN
VCOM
56kΩ
VEE
56kΩ
OUTP
INN
VEE
Figure 1.
APPLICATIONS
ADSL/ADSL2+ CO and CPE line drivers
xDSL line drivers
High current differential amplifiers
GENERAL DESCRIPTION
The AD8390A is a high output current, low power consumption
differential amplifier. It is particularly well suited for the central
office (CO) driver interface in digital subscriber line systems
such as ADSL and ADSL2+. In full bias operation, the driver
delivers 20.4 dBm output power into low resistance loads while
compensating for hybrid and transformer insertion losses and
back termination resistors.
The AD8390A is available in a thermally enhanced LFCSP
package (16-lead LFCSP). Significant control and flexibility
in bias current have been designed into the AD8390A.
Four power modes are selectable via two digital inputs, PD0 and
PD1, providing three levels of driver bias and one power-down
state. In addition, the IADJ pin is available for fine quiescent
current trimming to tailor the performance of the AD8390A.
The low power consumption, high output current, high output
voltage swing, and robust thermal packaging enable the
AD8390A to be used as the central office line driver in ADSL,
ADSL2+, and proprietary xDSL systems, as well as in other high
current applications requiring a differential amplifier.
Rev. B
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2013 Analog Devices, Inc. All rights reserved.
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Data Sheet
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
AD8390A
INP 1
PD1 2
PD0 3
INN 4
PIN 1
INDICATOR
AD8390A
TOP VIEW
(Not to Scale)
12 OUTN
11 VEE
10 VCC
9 OUTP
NOTES
1. NC = NO CONNECT.
2. NO ELECTRICAL CONNECTION. CONNECT THE
EXPOSED PAD TO A SOLID EXTERNAL PLANE
WITH LOW THERMAL RESISTANCE.
Figure 3. Pin Configuration
Table 4. Pin Function Descriptions
Pin No. Mnemonic Description
1 INP
Amplifier Noninverting Input.
2 PD1
Power Mode Control.
3 PD0
Power Mode Control.
4 INN
Amplifier Inverting Input.
5 NC
No Connection.
6
DGND
Ground.
7 IADJ
Bias Current Adjustment.
8 NC
No Connection.
9
OUTP
Amplifier Noninverting Output.
10 VCC
Positive Power Supply.
11 VEE
Negative Power Supply.
12 OUTN Amplifier Inverting Output.
13 NC
No Connection.
14 NC
No Connection.
15 VCOM Common-Mode Voltage.
16 NC
No Connection.
EPAD
Exposed pad. No electrical connection. Connect the exposed pad to a solid external plane with low thermal
resistance.
Rev. B | Page 5 of 12
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