MAX3510EEP Maxim Integrated Products, MAX3510EEP Datasheet

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MAX3510EEP

Manufacturer Part Number
MAX3510EEP
Description
RF Amplifier
Manufacturer
Maxim Integrated Products
Type
General Purpose Amplifierr
Datasheet
1.MAX3510EEP.pdf (12 pages)

Specifications of MAX3510EEP

Operating Frequency
65 MHz
Bandwidth
100 MHz
Supply Current
109 mA
Maximum Power Dissipation
1067 mW
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Number Of Channels
1 Channel
Case
SSOP
Dc
00+

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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).
19-1398; Rev 2; 8/99
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
Cable Modems
CATV Set-Top Box
________________________________________________________________ Maxim Integrated Products
INPUT
–
+
General Description
+5V
0.1 F
ANTI-ALIAS
FILTER
Telephony over Cable
CATV Status Monitor
CONTROL
LOGIC
Applications
0.001 F
0.001 F
12
18
5
6
2
4
3
7
1
SHDN
TXEN
VIN+
VIN-
V
GND1
GND
GND
GND
CC
1
MAX3510
Upstream CATV Amplifier
Pin Configuration appears at end of data sheet.
MAX3510EEP
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
VOUT+
CEXT1
VOUT-
CEXT2
PART
GND2
SCLK
V
GND
N.C.
SDA
CC
CS
2
20
16
13
10
9
8
19
17
15
14
11
0.0033 F
Typical Operating Circuit
0.1 F
+5V
CONTROL
LOGIC
TEMP. RANGE
-40°C to +85°C
0.1 F
Ordering Information
+5V
0.1 F
2:1
20 QSOP
OUTPUT
PIN-PACKAGE
Features
1

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MAX3510EEP Summary of contents

Page 1

... 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 PART MAX3510EEP Applications Pin Configuration appears at end of data sheet. 12 SHDN GND2 18 LOGIC TXEN ...

Page 2

Upstream CATV Amplifier ABSOLUTE MAXIMUM RATINGS 2), VOUT+, VOUT- ................... -0.5V to +10. Input Voltage Levels (all inputs), CEXT1, CEXT2.........................................-0. Continuous Input Voltage (VIN+, VIN-)...............................2Vp-p Continuous Current (VOUT+, VOUT-).................................80mA Stresses beyond ...

Page 3

AC ELECTRICAL CHARACTERISTICS (continued) = +4.75V to +5.25V, TXEN = SHDN = high former -40°C to +85°C, unless otherwise noted. Typical parameters are PARAMETER SYMBOL Transmit Mode Noise Transmit-Disable ...

Page 4

Upstream CATV Amplifier TIMING CHARACTERISTICS = +4.75V to +5.25V, TXEN = SHDN = high PARAMETER SYMBOL CS to SCK Rise Setup Time t SENS CS to SCK Rise Hold Time t SENH SDA to ...

Page 5

TXEN = SHDN = high +5V otherwise noted.) VOLTAGE GAIN vs. GAIN CONTROL WORD 40MHz 5MHz 60MHz 18 16 ...

Page 6

Upstream CATV Amplifier Table 1. Reflection Coefficients (75Ω reference) FREQUENCY TRANSMIT MODE MHz REAL S11 1 0.937 2 0.937 5 0.936 10 0.932 20 0.932 30 0.932 40 0.927 60 0.922 80 0.913 120 0.889 160 0.850 200 0.753 PIN ...

Page 7

SHDN PGA BIAS VIN+ VIN- Figure 1. Functional Diagram Detailed Description The following sections describe the blocks shown in the functional diagram (Figure 1). Programmable-Gain Amplifier The programmable-gain amplifier (PGA) consists of the variable-gain amplifier (VGA) and ...

Page 8

Upstream CATV Amplifier Ramp Generator The ramp generator circuit is a simple RC charging cir- cuit, which is used to control power-up and power-down of the output power amplifier made up of CEXT1 and an internal 2kΩ resistor. ...

Page 9

Table 3. Chip-State Control Bits SHDN TXEN ...

Page 10

Upstream CATV Amplifier VIN+ 2k VIN- Figure 3. Equivalent Input Circuit The model for the MAX3510 input impedance is shown in Figure 3. A well-designed printed circuit board is an essential part circuit. For best performance pay ...

Page 11

Pin Configuration TOP VIEW GND GND 3 18 GND1 4 17 MAX3510 VIN VIN GND SDA 9 12 SCLK 10 11 QSOP ______________________________________________________________________________________ Upstream ...

Page 12

Upstream CATV Amplifier 12 _________________________________________________________________________________________________ Package Information ...

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