MAX3510 データシートの表示（PDF） - Maxim Integrated

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MAX3510

Upstream CATV Amplifier

Maxim Integrated 

19-1398; Rev 4; 5/07

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Upstream CATV Amplifier

General Description

The MAX3510 is a programmable power amplifier for

use in CATV upstream applications. The device outputs

up to 64dBmV (continuous wave) through a 2:1 (voltage

ratio) transformer. It features variable gain controlled by

a 3-wire digital serial bus. Gain control is available in

1dB steps. The device operates over a frequency

range of 5MHz to 65MHz.

The MAX3510 offers a transmit-disable mode, which

places the device in a high-isolation state for use

between bursts in TDMA systems. In this mode the out-

put stage is shut off, minimizing output noise. When

entering and leaving transmit-disable mode, transients

are kept to 7mV nominal at full gain. In addition, supply

current is reduced to 25mA.

Two power-down modes are available. Software-shutdown

mode permits power-down of all analog circuitry while

maintaining the programmed gain setting. Shutdown

mode disables all circuitry and reduces current consump-

tion to less than 10µA.

The MAX3510 is available in a 20-pin QSOP package

for the extended-industrial temperature range (-40°C to

+85°C).

Applications

Cable Modems

Telephony-Over-Cable

CATV Set-Top Boxes

CATV Status Monitors

Features

♦ Ultra-Low Power-Up/Down Transients,

7mV Typical at 59dBmV Output

♦ Single +5V Supply

♦ Output Level Ranges from <8dBmV to 64dBmV

♦ Gain Programmable in 1dB Steps

♦ Low Transmit Output Noise Floor: -47dBmV

(160kHz BW)

♦ Low Transmit-Disable Output Noise: -70dBmV

♦ Two Power-Down Modes

Ordering Information

PART

MAX3510EEP

MAX3510EEP+

TEMP RANGE

-40°C to +85°C

-40°C to +85°C

+Denotes lead-free package.

PIN-PACKAGE

20 QSOP

20 QSOP

Pin Configuration appears at end of data sheet.

Typical Operating Circuit

CONTROL

LOGIC

12

SHDN

18

TXEN

0.001µF

+

5

VIN+

ANTI-ALIAS

INPUT

FILTER

–

+5V

0.1µF

6

VIN-

0.001µF 2

VCC1

4 GND1

3 GND

7 GND

1 GND

MAX3510

20

GND2

19

0.1µF

VCC2

+5V

17

CEXT1

0.0033µF

VOUT+ 16

2:1

15

VOUT-

14

CEXT2

N.C. 13

11

GND

10

SCLK

9

SDA

8

CS

+5V

0.1µF

0.1µF

CONTROL

LOGIC

OUTPUT

________________________________________________________________ Maxim Integrated Products 1

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

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