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THS6184 Datasheet(PDF) 1 Page - Texas Instruments

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Part No. THS6184
Description  DUAL-PORT, LOW-POWER DIFFERENTIAL xDSL LINE DRIVER AMPLIFIERS
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

THS6184 Datasheet(HTML) 1 Page - Texas Instruments

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FEATURES
DESCRIPTION
APPLICATIONS
+
1: 1
CODEC
V IN+
+
CODEC
V IN−
30.1 W
0.1 mF
1 mF
33 nF
Line:
100 W
30.1 W
0.1 mF
4.99 kW
4.99 kW
1.15 kW
0.1 mF
Line Power =
ADSL2: + 19.8 dBm
ADSL2+: + 20.4 dBm
ADSL2++: + 21.1 dBm
+12 V
−12 V
THS6184
SLLS635 – JANUARY 2005
DUAL-PORT, LOW-POWER DIFFERENTIAL
xDSL LINE DRIVER AMPLIFIERS
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 dissi-
– 3.2-mA/amp Mid Bias Mode ; 3.7 mA Max
pation 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 IADJ Pin for Variable
ADSL central office rack applications by combining
two ports, or four amplifiers, into one package.
Bias
– Stable Down to 1.6-mA/amplifier
The unique architecture of the THS6184 allows the
trimmed quiescent current to be much lower than
Low Noise
existing line drivers while still achieving high linearity.
– 2.9-nV/
√Hz Voltage Noise
Distortion at these low-power levels is good with –73
– 5.7-pA/
√Hz Inverting Current Noise
dBc THD at 1 MHz with the low bias mode of 4.3
mA/port. Fixed and variable multiple-bias settings of
– 0.8-pA/
√Hz Noninverting Current Noise
the amplifiers allows for enhanced power savings for
Low MTPR Distortion
line lengths where the full performance of the ampli-
– –74 dB with ADSL and ADSL2
fier is not required.
– –71 dB with ADSL2+ and –70 dB with
The wide output swing of 44-Vpp differentially with
ADSL2++
±12-V power supplies coupled with over 410-mA
–83 dBc THD (1 MHz, 100-
Ω Differential)
current drive allow for wide dynamic headroom,
keeping distortion minimized. The THS6184 output
High Output Current: >410 mA (25-
Ω Load)
stage incorporates extra catch-diodes to the power
Wide Output Swing: 44 Vpp (
±12-V, 200-Ω
supply to minimize the external protection required in
Differential)
CO systems. With a low 2.9-nV/
√Hz voltage noise
Wide Bandwidth: 45 MHz (Gain = +5)
coupled with a low 5.7-pA/
√Hz inverting current noise,
the THS6184 increases the sensitivity of the receive
Wide Power Supply Range:
±2.25 V to ±16.5 V
signals allowing for better margins and reach.
Ideal For Power Sensitive, High Density ADSL,
ADSL2, ADSL2+, and ADSL2++ Systems
Figure 1. Typical Line Driver Circuit Using One Port of THS6184
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.
PowerPAD is a trademark of Texas Instruments.
PRODUCT PREVIEW information concerns products in the forma-
Copyright © 2005, Texas Instruments Incorporated
tive or design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the
right to change or discontinue these products without notice.


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