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PDF ISG510065 Data sheet ( Hoja de datos )
| Número de pieza | ISG510065 | |
| Descripción | CATV OUT-OF-BAND TUNER | |
| Fabricantes | ISG | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ISG510065 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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ISG510065
PRELIMINARY DATA SHEET
CATV OUT-OF-BAND TUNER
FEATURES
• 3.3 V SINGLE SUPPLY OPERATION
• LOW POWER CONSUMPTION (400 mW)
• LOW DISTORTION
• 82 dB TOTAL CONVERSION GAIN
• 55 dB TOTAL GAIN CONTROL RANGE
• LOW LO-RF LEAKAGE
DESCRIPTION
The ISG510065 is a downconverter designed to be used as
an Out-of-Band Tuner for use in CATV set-top box and Digital
Cable Ready TV applications. The ISG510065 consists of an
input AGC amplifier, mixer, and a video/AGC amplifier. This
device offers optimum performance with low power consump-
tion and low distortion. There are two Package Options MLP
28 and TSSOP 20.
FUNCTIONAL DIAGRAM
EPCOS X6959M
SAW FILTER
VDD
28,18 27,17 26,19 25, X 24,15 23,14 22,13
1, X
2, 20
NC*
3, 1
NC*
4, X
5, X
VDD
6, 2
7, 6
MIXER
VIDEO
AMP
RF
AMP
LO
BUFFER
21,16
20,11
19,12
OUTPUT
MATCHING
VID OUT
18,10
17, 9
VDD
16, 8
15, 7
LO
APPLICATIONS
• Cable Set-Top Boxes • Digital Cable Ready TV Sets.
8, 3 9, 4 10, X 11, 5 12, X 13, X 14, X
RF
AGC
ELECTRICAL CHARACTERISTICS (TA = 25°C, VDD = 3.3 V, unless otherwise specified)
SYMBOLS PARAMETERS AND CONDITIONS
www.DataSheet4U.com
UNITS
MIN
RF Performance
RFIN
LOIN
CGMAX
VAGC
AGC
IM3
IFOUT
NF
GINPUT
GVIDEO
RF Input Frequency Range, High Side L.O.
LO Input Frequency Range, High Side L.O.
Maximum Conversion Gain*
AGC Voltage
AGC Dynamic Range VAGC = 0 to 3 V
Third Order Intermodulation, 1 VPP Differential Output, 1K ohm load
IF Output Level, Differential Output, 1K ohm load
Noise Figure, VAGC = 3 V
RF Amp/Mixer Conversion Gain, VAGC = 3 V
Video Amplifer Gain, VAGC = 3 V
LO-RF LO leakage at the RF port
LEAKAGE
DC Performance
VDD Supply Voltage
IDD Supply Current
* Includes saw filter loss.
MHz
MHz
dB
V
dB
dB
VPP
dB
dB
dB
dBm
V
mA
50
80
0
50
50
3.2
ABSOLUTE MAXIMUM RATINGS
(TC = 25°C unless otherwise noted)
SYMBOLS
PARAMETERS
UNITS RATINGS
VDD (GND) Supply Voltage (GND)
V -0.3 to +3.6
TOP Operating Temperature
°C -40 to +85
TSTG
Storage Temperature
°C -65 to +150
Junction Temperature
°C +150
Thermal Resistance (Ø ja) °C/W
34
Note:
1. Operation in excess of any one of these parameters may result
in permanent damage.
TYP
82
55
55
1
13
41
55
-95
3.3
117
MAX
150
220
3
2
15
-85
3.4
135
REV. D
7/19/2004
1
1 page  
TYPICAL APPLICATION CIRCUIT
EPCOS X6959M
SAW FILTER
PIN Numbers
MLP-28 , TSSOP-20
VDD
270nH
1uH
1uH
27pF
8.2pF
27pF
0.1uF
28,18 27,17 26,19 25, X 24,15 23,14 22,13
ISG510065
0 OHM 1, X GND
2, 20
NC*
MIX IN 2
3, 1
NC*
MIX IN 1
4, X GND
5, X GND
VDD
0.01uF
6, 2 VDD RF
7, 6 GND RF
MIXER
RF
AMP
VIDEO GND 21,16
AMP
IF OUT 2 20,11
200 OHM
4:1
IF OUT 1 19,12
SPECTRUM
ANALYZER
50 OHM
LO
BUFFER
VDD VIDEO 18,10
0.01uF
VDD LO 17, 9
0.01uF
LO IN 2 16, 8
1000pF
LO IN 1 15, 7
VDD
0.1uF
LOCAL
OSCILLATOR
1000pF
RF
SOURCE
8, 3
1000pF
9, 4 10, X 11, 5 12, X 13, X 14, X
1000pF
AGC
10K OHM
0.01uF
RF Amplifier
This amplifier provides a maximum gain of 29 dB. The gain is
programmed by applying a DC voltage (from 0 to 3 V) to the
AGC pin, providing 27 dB of range.
Downconversion Mixer
This double balanced mixer has 12 dB of conversion gain. The
outputs of the mixer are both open drain and require pull-up
inductors to VDD.
Video Amplifier
This amplifier provides a maximum gain of 55 dB. The gain is
programmed by applying a DC voltage (from 0 to 3 V) to the
AGC pin, providing 28 dB of range. The outputs of the video
amp are both open drain and require pull-up inductors to VDD.
Note:
1. The RF amplifier and video amplifier are controlled by a single AGC
so the overall dynamic range is the sum of the RF amplifier range
and the video amplifier range.
REV. D
7/19/2004
D
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet ISG510065.PDF ] | |
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