ADA4311-1_15 Datasheet, PDF (1/17 Pages) Analog Devices – Low Cost, Dual, High Current Output Line Driver with Shutdown

Low Cost, Dual, High Current Output
Line Driver with Shutdown
ADA4311-1
FEATURES
High speed
−3 dB bandwidth: 310 MHz, G = +5, RLOAD = 50 Ω
Slew rate: 1050 V/μs, RLOAD = 50 Ω
Wide output swing
20.6 V p-p differential, RLOAD of 100 Ω from 12 V supply
High output current
Low distortion
−98 dBc typical at 1 MHz, VOUT = 2 V p-p, G = +5, RLOAD = 100 Ω
−72 dBc typical at 10 MHz, VOUT = 2 V p-p, G = +5, RLOAD = 100 Ω
Power management and shutdown
Control inputs CMOS level compatible
Shutdown quiescent current: 1 mA/amplifier
Selectable quiescent current: 1 mA to 11.8 mA/amplifier
PIN CONFIGURATION
ADA4311-1
+V_S 1
NC 2
OUT A 3
–IN A 4
+IN A 5
10 OUT B
9 –IN B
8 +IN B
7 PD1
6 PD0
NC = NO CONNECT
Figure 1. Thermally Enhanced, 10-Lead MINI_SO_EP
TYPICAL APPLICATION
V_MID*
1/2
ADA4311-1
APPLICATIONS
Home networking line drivers
Twisted pair line drivers
Power line communications (PLC)
Video line drivers
ARB line drivers
I/Q channel amplifiers
1/2
*V_MID
=
V_CC
– _GND
2
ADA4311-1
Figure 2. Typical PLC Driver Application
GENERAL DESCRIPTION
The ADA4311-1 is comprised of two high speed, current
feedback operational amplifiers. The high output current, high
bandwidth, and fast slew rate make it an excellent choice for
broadband applications requiring high linearity performance
while driving low impedance loads.
The ADA4311-1 incorporates a power management function
that provides shutdown capabilities and the ability to optimize
the quiescent current of the amplifiers. The CMOS-compatible,
power-down control pins (PD1 and PD0) enable the ADA4311-1
to operate in four different modes: full power, medium power,
low power, and complete power-down. In power-down mode, the
quiescent current drops to only 1.0 mA/amplifier, while the outputs
go to a high impedance state.
The ADA4311-1 is available in a thermally enhanced, 10-lead
MSOP with an exposed paddle for improved thermal conduction.
The ADA4311-1 is rated to work in the extended industrial
temperature range of −40°C to +85°C.
Rev. 0
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