Wideband, Differential, High Output Current

Line Driver with Shutdown

Data Sheet

ADA4312-1

Rev. A

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FEATURES

High speed

−3 dB bandwidth: 195 MHz, G

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

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

+IN A

GND

SD

+IN B

–IN B

NC

NC = NO CONNECT. DO NOT CONNECT

TO THIS PIN.

2

1

3

4

12

11

10

9

ADA4312-1

Figure 1. Thermally Enhanced, 4 mm × 4 mm, 16-Lead LFCSP

TYPICAL APPLICATION CIRCUIT

1/2

1/2

2

ADA4312-1

ADA4312-1

Figure 2. Typical PLC Driver Application