Features: Low Distortion, High Output Current Amplifiers
Operate from 12 V to ±12 V Power Supplies,
Ideal for High-Performance ADSL CPE, and xDSL
Modems
Low Power Operation
9 mA/Amp (Typ) Supply Current
Digital (1-Bit) Power-Down
Voltage Feedback Amplifiers
Low Distortion
Out-of-Band SFDR 80 dBc @ 100 kHz into 100 Line
High Speed
175 MHz Bandwidth (3 dB), G = +1
400 V/s Slew Rate
High Dynamic Range
VOUT to within 1.2 V of Power Supply
APPLICATIONS
ADSL, VDSL, HDSL, and Proprietary xDSL USB, PCI,
PCMCIA Modems, and Customer Premise Equipment
(CPE)
Pinout
SpecificationsSupply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .26.4 V
Internal Power Dissipation
TSSOP-14 Package2. . . . . . . . . . . . . . . . . . . . . . . . .. . . . 2.2 W
SOIC-8 Package3. . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . 1.4 W
Input Voltage (Common-Mode) . . . . . . . . . . . . . . . . . . . .. ±VS
Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . ±VS
Output Short Circuit Duration
. . . . . . . . . . . . . . . . . . . . Observe Power Derating Curves
Storage Temperature Range . . . . . . . . . . . .65°C to +125°C
Operating Temperature Range . . . . . . . . . . .40°C to +85°C
Lead Temperature Range (Soldering 10 sec) . . . . . . . . .300°C
| -3dB Bandwidth |
175MHz |
| Slew Rate |
400V/s |
| Vos |
8mV |
| Ib |
1A |
| Input Noise (nV/rtHz) |
8nV/rtHz |
| Vcc-Vee Supply (V) |
8 to 24 |
| Iq per Amplifier |
10.5mA |
| # OpAmps per Pkg |
2 |
| Operating Temp Range |
-40 to +85 |
| Packages |
SOIC,SOP |
DescriptionThe AD8019 is a low cost xDSL line driver optimized to drive a minimum of 13 dBm into a 100 Ω load while delivering outstand- ing distortion performance. The AD8019 is designed on a 24 V high-speed bipolar process enabling the use of ± 12 V power supplies or 12 V only. When operating from a single 12 V sup- ply the highly efficient amplifier architecture can typically deliver 170 mA output current into low impedance loads through a 1:2 turns ratio transformer. Hybrid designs using ±12 V supplies enable the use of a 1:1 turns ratio transformer, minimizing attenu- ation of the receive signal. The AD8019 typically draws 9 mA/ amplifier quiescent current. A 1-bit digital power down feature reduces the quiescent current to approximately 1.6 mA/amplifier.
Figure 1 shows typical Out of Band SFDR performance under ADSL CPE (upstream) conditions. SFDR is measured while driving a 13 dBm ADSL DMT signal into a 100 Ω line with 50 Ω back termination.
The AD8019 comes in thermally enhanced 8-lead SOIC and 14-lead TSSOP packages. The 8-lead SOIC is pin-compatible with the AD8017 12 V line driver.
AD8019 Data Sheet
