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Part Number: MAX3509
Description: The MAX3509 is a programmable power amplifier for use in CATV upstream applications. The device output...
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MAX3509
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General Description
MAX3509 General Description
The MAX3509 is a programmable power amplifier for use in CATV upstream applications. The device outputs up to 66dBmV QPSK through a 1:1 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 5MHz to 65MHz frequency range.
The MAX3509 offers a transmit-disable mode, which places the device in a high-isolation state for use between bursts in TDMA systems. In this mode, all analog functions are shut down, minimizing output noise and power consumption. When entering and leaving transmit-disable mode, transients are kept to 25mV nominal at full gain. In addition, supply current is reduced to 7.8mA.
An additional power-down mode is available. Shutdown mode disables all circuitry and reduces current consumption to less than 1µA.
The MAX3509 is available in a 20-pin TSSOP-EP package for the extended-industrial temperature range (-40°C to +85°C).
MAX3509 Maximum Ratings
VCC1, VCC2 to GND, GND1 ...............................-0.3V to +10.0V
SCLK, SDA, CS, TXEN, SHDN to GND
and GND1 .........................................................-0.3V to +5.5V
Continuous Input Voltage (IN+, IN-) ..............................2Vp-p
Continuous Current (OUT+, OUT-) ..................................80mA
Continuous Power Dissipation (TA = +70°C)
20-Pin TSSOP-EP (derate at 27mW/°C above
+70°C).......................................................................2200mW
Operating Temperature Range .....................-40°C to +85°C
Junction Temperature .................................................+150°C
Storage Temperature Range .......................-65°C to +150°C
Lead Temperature (soldering, 10s) .............................+300°C
SCLK, SDA, CS, TXEN, SHDN to GND
and GND1 .........................................................-0.3V to +5.5V
Continuous Input Voltage (IN+, IN-) ..............................2Vp-p
Continuous Current (OUT+, OUT-) ..................................80mA
Continuous Power Dissipation (TA = +70°C)
20-Pin TSSOP-EP (derate at 27mW/°C above
+70°C).......................................................................2200mW
Operating Temperature Range .....................-40°C to +85°C
Junction Temperature .................................................+150°C
Storage Temperature Range .......................-65°C to +150°C
Lead Temperature (soldering, 10s) .............................+300°C
MAX3509 Features
Ultra-Low Power-Up/Down Transients, 25mV (typ) at 66dBmV Output
Single-Supply Operation
Output Level Ranges from <12dBmV to 67dBmV (QPSK)
Gain Programmable in 1dB Steps
Low Transmit Output Noise Floor: -41dBmV (160kHz BW)
Low Transmit-Disable Output Noise: -70dBmV
Shutdown Mode
Single-Supply Operation
Output Level Ranges from <12dBmV to 67dBmV (QPSK)
Gain Programmable in 1dB Steps
Low Transmit Output Noise Floor: -41dBmV (160kHz BW)
Low Transmit-Disable Output Noise: -70dBmV
Shutdown Mode
MAX3509 Typical Application
Telephony over Cable CATV Status Monitor
OPENCATV Set-Top Box CATV Infrastructure
Cable Modems
OPENCATV Set-Top Box CATV Infrastructure
Cable Modems
MAX3509 Connection Diagram
MAX3509
PDF/DataSheet Download
- Datasheet: MAX3509
- File Size: 221351 KB
- Manufacturer: MAXIM [Maxim Integrated Products]
- Click here to Download
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MAX3509 Relative Products
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