AD8398_15 Datasheet, PDF (1/2 Pages) Analog Devices – VDSL, Dual Line Driver with Shutdown

VDSL, Dual Line Driver with Shutdown
AD8398
FEATURES
Current feedback
Wide output swing
18.8 V p-p differential, (50 Ω RLOAD) from 12 V supply
20.0 V p-p differential, (100 Ω RLOAD) from 12 V supply
High output current
Linear output current of 250 mA peak
Low distortion
−100 dBc typical at 200 kHz
−76 dBc typical at 4 MHz
−66 dBc typical at 8 MHz
−56 dBc typical at 16 MHz
Low quiescent current
15 mA total
High speed
200 MHz bandwidth (AV DIFF = +2 dB, −3 dB)
900 V/μs slew rate (RLOAD = 50 Ω)
APPLICATIONS
VDSL line driver
Consumer xDSL modems
Twisted pair line drivers
GENERAL DESCRIPTION
The AD8398 comprises two high-speed current feedback
operational amplifiers. The high output current, high band-
width, and fast slew rate make it particularly well suited as the
line driver in VDSL and VDSL2 applications. The AD8398 is
available in a thermally enhanced 4 mm × 4 mm, 16-lead LFCSP.
PIN CONFIGURATION
NC 1
−IN A 2 ^–
+IN A 3 +
GND 4
NC = NO CONNECT
12 NC
– _{11 −IN B}
+ 10 +IN B
9 PD1
Figure 1. Thermally Enhanced, 4 mm × 4 mm, 16-Lead LFCSP_VQ
TYPICAL APPLICATION
V_MID*
1/2
AD8398
1/2
*V_MID ⁼
V_CC ^– V_EE
2
AD8398
Figure 2. Typical PLC Driver Application
The AD8398 incorporates power management functionality via
two CMOS-compatible control pins, PD0 and PD1. These pins
select one of four operating modes: full power, medium power,
low power, and complete power down. In the power-down
mode, the quiescent current drops to 1.2 mA.
The AD8398 operates in the extended industrial temperature
range of −40°C to +85°C.
For more information about the AD8398 email: [e-mail].
Rev. Sp0
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