19-1398; Rev 4; 5/07
KIT
ATION
EVALU
ILABLE
AVA
Upstream CATV Amplifier
Features
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.
♦ Ultra-Low Power-Up/Down Transients,
7mV Typical at 59dBmV Output
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 output 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 consumption 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).
♦ Low Transmit Output Noise Floor: -47dBmV
(160kHz BW)
♦ Single +5V Supply
♦ Output Level Ranges from <8dBmV to 64dBmV
♦ Gain Programmable in 1dB Steps
♦ Low Transmit-Disable Output Noise: -70dBmV
♦ Two Power-Down Modes
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX3510EEP
-40°C to +85°C
20 QSOP
MAX3510EEP+
-40°C to +85°C
20 QSOP
+Denotes lead-free package.
Applications
Cable Modems
CATV Set-Top Boxes
Telephony-Over-Cable
CATV Status Monitors
Pin Configuration appears at end of data sheet.
Typical Operating Circuit
12
CONTROL
LOGIC
SHDN
GND2
TXEN
VCC2
19
18
CEXT1
0.001µF
5
+
0.0033µF
6
0.1µF
OUTPUT
+5V
MAX3510
+5V
2:1
16
ANTI-ALIAS
FILTER
–
0.1µF
+5V
17
VIN+
VOUT+
INPUT
20
0.001µF 2
4
3
7
1
VIN-
VOUT-
15
0.1µF
0.1µF
VCC1
GND1
GND
CEXT2
N.C.
GND
14
13
11
10
SCLK
GND
GND
SDA
CS
9
8
CONTROL
LOGIC
________________________________________________________________ Maxim Integrated Products
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.
1
MAX3510
General Description
