Datasheet

PWP 20-PinRHF 24-Pin
1
FEATURES DESCRIPTION
APPLICATIONS
+
1:1
CODEC
V
IN+
+
CODEC
V
IN−
30.1 Ω
1 μF 33nF
Line:
100 Ω
30.1 Ω
4.99kΩ
4.99kΩ
1.15kΩ
0.1 μF
LinePower= ADSL2:19.8dBm
ADSL2+:20.4dBm
ADSL2++:21.1dBm
12V
−12V
THS6184
www.ti.com
................................................................................................................................................. SLLS635D AUGUST 2005 REVISED JANUARY 2009
DUAL-PORT, LOW-POWER DIFFERENTIAL
xDSL LINE DRIVER AMPLIFIERS
23
Trimmed Low-Power Consumption
The THS6184 is a dual-port, low-power current
feedback differential line driver amplifier system ideal
4.2-mA/amp Full Bias Mode; 4.8 mA Max
for xDSL systems. Its extremely low-power
3.2-mA/amp Mid Bias Mode; 3.7 mA Max
dissipation is ideal for ADSL, ADSL2, ADSL2+, and
2.15-mA/amp Low Bias Mode; 2.5 mA Max
ADSL2++ systems that must achieve high densities in
Shutdown Mode and I
ADJ
Pin for Variable ADSL central office applications by combining two
ports, or four amplifiers, into one package.
Bias
Low Noise
The unique architecture of the THS6184 allows the
trimmed quiescent current to be much lower than
3-nV/ Hz Voltage Noise
existing line drivers while still achieving high linearity.
5.9-pA/ Hz Inverting Current Noise
Distortion at these low-power levels is good with
1.2-pA/ Hz Noninverting Current Noise
83-dBc THD at 1 MHz with the low bias mode of 4.2
mA/port. Fixed and variable multiple-bias settings of
Low MTPR Distortion
the amplifiers allows for enhanced power savings for
74 dB with ADSL and ADSL2
line lengths where the full performance of the
71 dB with ADSL2+ and 70 dB with
amplifier is not required.
ADSL2++
The wide output swing of 44-V
PP
differentially with
83 dBc THD (1 MHz, 100- Differential)
± 12-V power supplies coupled with over 415-mA
High Output Current: >415 mA (25- Load)
current drive allow for wide dynamic range, keeping
distortion minimized. With a low 3-nV/ Hz voltage
Wide Output Swing: 44 V
PP
( ± 12-V, 200-
noise coupled with a low 5.9-pA/ Hz inverting current
Differential)
noise, the THS6184 increases the sensitivity of the
Wide Bandwidth: 30 MHz (Gain = 5)
receive signals allowing for better margins and reach.
Wide Power Supply Range: ± 4 V to ± 16 V
Ideal For Power Sensitive, High Density ADSL,
ADSL2, ADSL2+, and ADSL2++ Systems
Figure 1. Typical Line Driver Circuit Using One Port of THS6184
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2 PowerPAD is a trademark of Texas Instruments.
3 All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2005 2009, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.

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