Wideband, Differential, High Output Current
Line Driver with Shutdown
Data Sheet
Rev. A
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FEATURES
High speed
−3 dB bandwidth: 195 MHz, G
DIFF
= +16 V/V, R
L, DIFF
= 40 Ω
Differential slew rate: 2100 V/µs
Wide output swing: 18.0 V p-p differential, 12 V supply
High output current: 225 mA peak
G.hn MTPR at 16 dBm line power
−64 dBc typical at 5 MHz, referred to −58 dBm/Hz
−64 dBc typical at 17 MHz, referred to −58 dBm/Hz
−64 dBc typical at 28 MHz, referred to −58 dBm/Hz
−63 dBc typical at 31 MHz, referred to −58 dBm/Hz
−61 dBc typical at 59 MHz, referred to −58 dBm/Hz
−62 dBc typical at 82 MHz, referred to −58 dBm/Hz
Shutdown
CMOS-compatible SD pin
Shutdown quiescent current: 3 mA
Z
OUT
in shutdown: 10 kΩ differential (open-loop)
Resistor adjustable quiescent current
APPLICATIONS
ITU G.hn (ITU G.9960/G.9961)
HomePlug AV
HomePlug AV2
IEEE 1901
GENERAL DESCRIPTION
The ADA4312-1 is a high speed, differential, current feedback line
driver designed for half-duplex G.hn power line communication
(PLC) modems. The high output current, high bandwidth, and
slew rate of 2100 V/µs make the ADA4312-1 an excellent choice
for G.hn broadband applications that require high linearity
while driving low impedance loads.
The CMOS-compatible shutdown control pin (SD) reduces
the quiescent current to 3 mA while maintaining an output
impedance of 10 kΩ differential. The ADA4312-1 also provides
resistor adjustable quiescent current for improved efficiency in
transmit mode.
The ADA4312-1 is available in a thermally enhanced, 16-lead
LFCSP with an exposed pad to facilitate robust thermal
management. The ADA4312-1 is rated to operate over the
extended industrial temperature range of −40°C to +85°C.
FUNCTIONAL BLOCK DIAGRAM
NC
–IN A
OUT B
V
CC
NC
+IN A
GND
I
ADJ
NC
V
EE
NC
SD
+IN B
–IN B
NC
NC = NO CONNECT. DO NOT CONNECT
TO THIS PIN.
OUT A
2
1
3
4
12
11
10
9
6
7
8
5
14
13
15
16
ADA4312-1
11044-001
Figure 1. Thermally Enhanced, 4 mm × 4 mm, 16-Lead LFCSP
TYPICAL APPLICATION CIRCUIT
V
MID
*
V
MID
=
1/2
1/2
V
CC
2
ADA4312-1
ADA4312-1
11044-002
Figure 2. Typical PLC Driver Application
