參數(shù)資料
型號: MAX3558EVKIT
廠商: Maxim Integrated Products, Inc.
英文描述: Evaluation Kit for the MAX3558
中文描述: MAX3558評估板
文件頁數(shù): 1/13頁
文件大?。?/td> 398K
代理商: MAX3558EVKIT
General Description
The MAX3503 programmable power amplifier is
designed for use in CATV upstream applications. The
MAX3503 drives 61dBmV (QPSK) into a 75
load when
driven with a 34dBmV nominal input signal. Both input
and output ports are differential, requiring that an exter-
nal balun be used at the output port. The variable gain
feature provides greater than 56dB of dynamic range,
which is controlled by an SPI 3-wire interface. Gain
control is available in 0.5dB steps. The device operates
over a frequency range of 5MHz to 65MHz. The
MAX3503 is internally matched for use with a 1:1 balun.
This device operates from a single 3.3V DC supply and
draws 235mA during transmit (100% duty cycle,
61dBmV out). The bias current is automatically
adjusted, based on the output level to increase efficien-
cy. Additionally, the device can be disabled between
bursts to minimize noise and save power while main-
taining a match at the output port. A shutdown mode is
available to disable all circuitry and reduce current con-
sumption to 5μA (typ).
The MAX3503 is available in a 20-pin QFN package.
The device operates in the extended industrial temper-
ature range (-40°C to +85°C).
________________________Applications
DOCSIS
/EuroDOCSIS
and DVB Cable
Modems
OpenCable
Set-Top Box
Telephony Over Cable
CATV Status Monitor
Features
o
Single 3.3V Supply Operation
o
Accurate Gain Control, ±1dB over 53dB Range
o
Gain Programmable in 0.5dB Steps
o
-55dBc Harmonic Distortion at 65MHz
o
Low Burst On/Off Transient
o
High Efficiency: 182mW at 34dBmV Out;
16mW in Transmit-Disable Mode
M
Upstream CATV Amplifier
________________________________________________________________
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
2
1
1
1
1
N
N
N
N
C
6
7
8
9
1
S
S
C
T
S
11
12
13
14
15
GND
**
NOTE:
CORNER GND PINS AND THE EXPOSED PAD MUST BE
SOLDERED TO THE SUPPLY GROUND
.
GND
GND
GND
N.C.
OUT-
N.C.
OUT+
V
CC
5
4
3
2
1
GND
IN-
GND
V
CC
IN+
MAX3503
QFN**
TOP VIEW
Pin Configuration
19-2339; Rev 1; 3/02
EVALUATION KIT
AVAILABLE
Ordering Information
SPI is a trademark of Motorola, Inc.
DOCSIS/EuroDOCSIS/OpenCable are trademarks of
CableLabs
.
PART
TEMP RANGE
-40
°
C to +85
°
C
PIN-PACKAGE
20 QFN-EP* (5mm
×
5mm)
MAX3503EGP
Typical Operating Circuit appears at end of data sheet.
*
Exposed pad.
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