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PRELIMINARY DATA SHEET
ISG510065
CATV OUT-OF-BAND TUNER
FEATURES
* 3.3 V SINGLE SUPPLY OPERATION * LOW POWER CONSUMPTION (400 mW) * LOW DISTORTION
28,18 27,17 26,19 25, X 24,15 23,14 22,13
FUNCTIONAL DIAGRAM
EPCOS X6959M SAW FILTER
VDD
* 82 dB TOTAL CONVERSION GAIN * 55 dB TOTAL GAIN CONTROL RANGE * LOW LO-RF LEAKAGE
1, X
VIDEO AMP MIXER
21,16
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 consumption and low distortion. There are two Package Options MLP 28 and TSSOP 20.
2, 20 NC* 3, 1 NC* 4, X
20,11 OUTPUT MATCHING
VID OUT
19,12 18,10
VDD
5, X 17, 9
6, 2
VDD
7, 6
RF AMP LO BUFFER
16, 8 LO
15, 7
APPLICATIONS
* Cable Set-Top Boxes * Digital Cable Ready TV Sets.
8, 3
9, 4 RF
10, X
11, 5
12, X
13, X
14, X
AGC
ELECTRICAL CHARACTERISTICS
SYMBOLS PARAMETERS AND CONDITIONS RF Performance
(TA = 25C, VDD = 3.3 V, unless otherwise specified) UNITS MIN TYP MAX
RF Input Frequency Range, High Side L.O. RFIN LOIN LO Input Frequency Range, High Side L.O. CGMAX Maximum Conversion Gain* AGC Voltage VAGC AGC AGC Dynamic Range VAGC = 0 to 3 V IM3 Third Order Intermodulation, 1 VPP Differential Output, 1K ohm load IF Output Level, Differential Output, 1K ohm load IFOUT NF Noise Figure, VAGC = 3 V GINPUT RF Amp/Mixer Conversion Gain, VAGC = 3 V GVIDEO 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
50 80 82 0 50 50
150 220 3 55 55 1 13 41 55 -95
2 15
-85
V mA
3.2
3.3 117
3.4 135
ABSOLUTE MAXIMUM RATINGS
(TC = 25C unless otherwise noted) SYMBOLS VDD (GND) TOP TSTG PARAMETERS Supply Voltage (GND) Operating Temperature Storage Temperature Junction Temperature Thermal Resistance (O ja) UNITS V C C C C/W RATINGS -0.3 to +3.6 -40 to +85 -65 to +150 +150
34 Note: 1. Operation in excess of any one of these parameters may result in permanent damage.
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ISG510065 PIN ASSIGNMENTS
GND VIDEO
22
MIX IN 1 1 2 3 4 5 6 7 8 9 10 20 19 18 MIX IN 2 MIX GND MIX OUT 2 MIX OUT 1 GND IF IN 1 IF IN 2 GND VID IF OUT 1 IF OUT 2
MIX OUT 2
MIX OUT 1
IF IN 2
28
27
26
25
24
23
GND
1
IF IN 1
GND
GND
21
GND
VDD RF RF IN 1 RF IN 2
MIX IN 2
2
20
IF OUT 2
MIX IN 1
3
ISG510065
( MLP 28 )
19
IF OUT 1
V AGC
ISG 510065
( TSSOP-20 )
17 16 15 14 13 12 11
GND
4
18
VDD VID
GND RF
GND
5
17
VDD LO
LO IN 1 LO IN 2 VDD LO VDD VID
VDD RF GND RF
6
16
LO IN 2 LO IN 1
7
15
8
9
10
11
12
13
8
V AGC
GND
GND
RF IN 1
PIN FUNCTIONS
TSSOP MLP-28 DESCRIPTION Ground pins. Connect to the ground plane with shortest possible length to minimize inductance. PIN NO. PIN NO. PIN NAME 16 1, 4, 5, 10, 19 12, 13, 14, GND 21, 25, 26 20 2 MIX IN2 1 3 MIX IN1 2 6 VDD RF 6 7 GND RF 3 8 RF IN1 4 9 RF IN2 5 11 AGC 7 15 LO IN1 8 16 LO IN2 9 17 VDD LO 10 18 VDD VID 12 19 IF OUT1 11 13 15 14 17 18 20 22 23 24 27 28
No connection. No connection. RF AMP Supply, +3.3 V. RF AMP Ground. See GND. RF AMP Positive Input. 150 ohms input impedance . RF AMP Negative Input. 150 ohms input impedance. Automatic Gain Control, Min Gain @ AGC = 0 V, Max Gain @ AGC = 3.0 V. LO Buffer Positive Input. LO Buffer Negative Input. LO Buffer Supply, +3.3 V. VIDEO AMP Input Stage Supply, +3.3 V. VIDEO AMP Negative Output. This pin and IFOUT2 form a 1K ohm ouput impedance. Open Drain See Application Page 5 IF OUT2 VIDEO AMP Positive Output. See IFOUT1. GND VID VIDEO AMP Ground. See GND. IF IN1 VIDEO AMP Negative Input. IF IN2 VIDEO AMP Positive Input. MIX OUT1 MIXER Positive Output. Open Drain .See Application Page 5 MIX OUT2 MIXER Negative Output. Open Drain. See Application Page 5 .
RF IN 2
GND
GND
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ISG510065 TYPICAL PERFORMANCE CURVES
CONVERSION GAIN vs. RF
88 AGC = 3.0 V 86 84 82 80 78 76 74 72 70.0
0 -10 -20 10 RF = 100 MHz AGC = 3.0 V
IF OUTPUT vs. FREQUENCY
IF Output (dBm)
90.0 110.0 130.0 150.0
ConvGain (dB)
-30 -40
-50 -60 0 50 100 150 200 250 300 350
RF (MHz)
IF Out (MHz)
CONVERSION GAIN vs. LOW POWER
87 86 85 84
70
CONVERSION GAIN vs. AGC
90 RF = 100 MHz 80
RF = 100 MHz AGC = 3.0 V
NF (dB)
83 82 81 80 79 78 77 -10.0 -5.0 -0.0 5.0
ConvGain (dB)
60 50
40
30 20 0.0
0.5
1.0
1.5
2.0
2.5
3.0
LO Power (dBm)
AGC (V)
LO LEAKAGE AT RF vs. FREQUENCY
-92 -93 -94
45 40 35
NOISE FIGURE vs. AGC
RF = 100 MHz P Out = 0 dBm
LO Leakage (dBm)
Noise Figure (dB)
AGC = 3.0 V, LO = 2.0 dBm AGC = 0V, LO = 2.0 dBm
-95 -96 -97 -98 -99 -100 -101 -102 100 120 140 160 180 200
30 25 20 15 10 5 0 0.0
0.5
1.0
1.5
2.0
2.5
3.0
Frequency (MHz)
AGC (V)
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ISG510065 TYPICAL PERFORMANCE CURVES (CON'T)
IM3 vs. AGC
75
INPUT VOLTAGE vs. CURRENT
160 140
70
120
65
IM3 (dB)
100
ICC (mA)
RF = 100 MHz
60
80 60 40
55
50
20 0 0.00
45 0 0.5 1 1.5 2 2.5 3
1.00
2.00
3.00
4.00
AGC(V)
VCC (V)
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ISG510065 TYPICAL APPLICATION CIRCUIT
EPCOS X6959M SAW FILTER
PIN Numbers MLP-28 , TSSOP-20
270nH 1uH
8.2pF 27pF
VDD
1uH 27pF
0.1uF
28,18
27,17 26,19
25, X
24,15
23,14 22,13
MIX OUT 2
MIX OUT 1
IF IN 1
IF IN 2
GND
GND
0 OHM
1, X
GND VID
GND
VIDEO AMP MIXER
GND
21,16
2, 20 NC* 3, 1 NC* 4, X
MIX IN 2
IF OUT 2
20,11
4:1
200 OHM
SPECTRUM ANALYZER 50 OHM
MIX IN 1
IF OUT 1
19,12 18,10 0.01uF
GND
VDD VIDEO
VDD
0.1uF
5, X
GND
VDD LO
17, 9 0.01uF
6, 2
VDD
0.01uF 7, 6
VDD RF
RF AMP LO BUFFER
RF IN 1 RF IN 2 V AGC GND GND GND GND
LO IN 2
16, 8 1000pF
LOCAL OSCILLATOR
GND RF
LO IN 1
15, 7 1000pF
8, 3 RF SOURCE 1000pF
9, 4
10, X
11, 5
12, X
13, X
14, X
AGC
1000pF 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.
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ISG510065 PACKAGE INFORMATION MLP-28 (Units in mm)
1. 2. 3. 4. 5. 6. 7.
Dimensions and tolerances conform to ASME Y14.5-1994. All dimensions are in millimeters. All angles are in degrees. N is the total number of terminals. The terminal numbering convention shall conform to JESD 95-1, SPP-012. The terminal #1 identifier may be either a mold or marked feature. Dimension b applies to metallized terminal and is measured between 0.25 and 0.3 mm from terminal tip. ND and NE refer to the number of terminals on each D and E side respectively. Co-planarity applies to the exposed heatsink slug as well as the terminals.
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ISG510065 PACKAGE INFORMATION MLP-28 (CON'T) COMMON DIMENSIONS
SYMBOLS A1 A3 r b/2 MIN 0 NOM 0.02 0.20 REF MAX 0.05
VARIATIONS
SYMBOLS A b D D2 E E2 e L N ND NE NOTE 0.45 28 7 7 1,2,4 3.00 3.00 MIN 0.80 0.18 NOM 0.90 0.23 5.00 BSC 3.15 5.00 BSC 3.15 0.50 BSC 0.55 0.65 3 6 6 3.25 3.25 MAX 1.00 0.30 5 NOTE
TOLERANCES OF FORM AND POSITION aaa bbb ccc 0.25 0.1 0.1
SUMMARY TABLE & PIN #1 DIMENSIONS
BODY SIZE (MM)(MM) 5.00x5.00 PITCH COUNT 0.50 LEAD 28 AA 0.435 BB 0.435 CC 0.18 DD 0.18
LAND PATTERN FOR TERMINALS AND THERMAL PAD
ISG Broadband, Inc. * 1567 Centre Pointe Drive * Milpitas, CA 95035 * (408) 957-8000 * FAX (408) 957-8008 * www.isgbroadband.com
DATA SUBJECT TO CHANGE WITHOUT NOTICE
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ISG510065 PACKAGE INFORMATION TSSOP-20
(CON'T)
LAND PATTERN FOR TERMINALS AND THERMAL PAD TSSOP-20
(CON'T)
ISG Broadband, Inc. * 1567 Centre Pointe Drive * Milpitas, CA 95035 * (408) 957-8000 * FAX (408) 957-8008 * www.isgbroadband.com
DATA SUBJECT TO CHANGE WITHOUT NOTICE
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