ETC1 ISG510067 Dtv if agc amplifier Datasheet

PRELIMINARY DATA SHEET
ISG510067
DTV IF AGC AMPLIFIER
FEATURES
FUNCTIONAL DIAGRAM
• 3.3 V SINGLE SUPPLY OPERATION
• LOW POWER CONSUMPTION (330 mW)
SAW FILTER
• LOW DISTORTION
• 85 dB TOTAL VOLTAGE GAIN
VDD
• 54 dB TOTAL GAIN CONTROL RANGE
28,18
27,17
26,19
25, X
24,15
23,14
22,13
• 25-100 MHZ OPERATION
1, X
DESCRIPTION
21,16
VIDEO
AMP
2, 20
20,11
3, 1
19,12
4, X
18,10
5, X
17, 9
VID OUT
NC*
OUTPUT
MATCHING
NC*
The ISG510067 consists of an input AGC amplifier and a
video/AGC amplifier. The amplifiers are designed to interface
directly with standard saw filters. The AGC is delayed between
the two blocks for optimal NF and IM3 performance across the
full AGC range. The final stage is capable of providing 2 VPP
into a 500 Ω load. There are two package options MLP28 and
TSSOP 20.
VDD
6, 2
16, 8
RF
AMP
VDD
7, 6
15, 7
8, 3
APPLICATIONS
9, 4
10, X
11, 5
12, X
RF
13, X
14, X
AGC
• Digital Terrestrial Tuners • Digital TV Sets.
ELECTRICAL CHARACTERISTICS
(TA = 25°C, VDD = 3.3 V, unless otherwise specified)
SYMBOLS PARAMETERS AND CONDITIONS
UNITS
MIN
TYP
MAX
43.75
85
100
RF Performance
RFIN
GMAX
VAGC
AGC
IM3
IFOUT
NF
GINPUT
GVIDEO
RF Input Frequency Range
Maximum Gain*
AGC Voltage
AGC Dynamic Range VAGC = 0 to 3 V
Third Order Intermodulation, 1 VPP Differential Output, 1K ohm load
Third Order Intermodulation, 2 VPP Differential Output, 1K ohm load
IF Output Level, Differential Output, 1K ohm load
Noise Figure, VAGC = 3 V
Input Amp Gain, VAGC = 3 V
Video Amp Gain, VAGC = 3 V
DC Performance
VDD
Supply Voltage
IDD
Supply Current
*
MHz
dB
V
dB
dBc
dBc
VPP
dB
dB
dB
V
mA
0
3
54
60
48
1
13.5
44
55
3.3
100
Includes saw filter loss.
ABSOLUTE MAXIMUM RATINGS
(TC = 25°C unless otherwise noted)
UNITS
RATINGS
VDD (GND)
SYMBOLS
Supply Voltage (GND)
PARAMETERS
V
-0.3 to +3.6
TOP
Operating Temperature
°C
-40 to +85
TSTG
Storage Temperature
°C
-65 to +150
Junction Temperature
°C
+150
°C/W
34
Thermal Resistance (Ø ja)
Note:
1. Operation in excess of any one of these parameters may result
in permanent damage.
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AMP OUT 2
AMP OUT 1
GND
GND
VIDEO IN 2
VIDEO IN 1
GND VIDEO
PIN ASSIGNMENTS
28
27
26
25
24
23
22
GND
1
21
GND
GC 2
2
20
VID OUT 2
GC 1
3
GND
4
GND
VDD RF
19
( MLP-28 )
17
VDD
6
16
VDD
7
15
GND
12
13
8
1
GND
11
GND
10
GND
RF IN 1
9
V AGC
5
GND
VDD VID
8
1
20
GC 2
VDD RF
2
19
GND
RF IN 1
3
18
AMP OUT 2
RF IN 2
4
ISG 510067
17
AMP OUT 1
V AGC
5
(TSSOP-20)
16
GND
GND RF
6
15
VID IN 2
GND
7
14
VID IN 1
VDD
8
13
GND VID
VDD
9
12
VID OUT 1
VDD VID
10
11
VID OUT 2
VID OUT 1
18
RF IN 2
GND RF
ISG 510067
GC 1
PIN FUNCTIONS
TSSOP-20 MLP-28
PIN NO.
7,16,19
20
1
2
6
3
4
5
8
9
10
12
11
13
14
15
17
18
PIN NO.
1, 4, 5, 10,
12,13,14, 15
21, 25, 26
2
3
6
7
8
9
11
16
17
18
19
20
22
23
24
27
28
PIN NAME
DESCRIPTION
GND
Ground pins. Connect to the ground plane with shortest possible length to minimize inductance.
GC1
GC2
VDD RF
GND RF
RF IN1
RF IN2
AGC
VDD
VDD
VDD VID
VID OUT1
Optional Gain control
Optional Gain control
INPUT AMP Supply, +3.3 V.
INPUT AMP Ground. See GND.
INPUT AMP Positive Input. Input Impedance 150 ohms.
INPUT AMP Negative Input. Input Impedance 150 ohms.
Automatic Gain Control, Min Gain @ AGC = 0 V, Max Gain @ AGC = 3.0 V.
Supply Voltage, +3.3 V.
Supply Voltage, +3.3 V.
VIDEO AMP Input Stage Supply, +3.3 V.
VIDEO AMP Negative Output. This pin and VID OUT2 form a 1K ohm ouput impedance.
Open Drain - See Application Page 4.
VID OUT2
GND VID
VID IN1
VID IN2
AMP OUT1
AMP OUT2
VIDEO AMP Positive Output. See VID OUT1.
VIDEO AMP Ground. See GND.
VIDEO AMP Negative Input.
VIDEO AMP Positive Input.
INPUT AMP Positive Output. Open Drain . See Application Page 4.
INPUT AMP Negative Output. Open Drain .See Application Page 4.
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TYPICAL PERFORMANCE CURVES
GAIN vs. AGC
OUTPUT SPECTRUM
10
90
ZL = 1 K Ω
ZL = 1 K Ω
0
80
70
-20
Gain (dB)
Output (dBm)
-10
-30
-40
60
50
-50
40
-60
-70
30
0
50
100
150
200
250
300
0
0.5
1
1.5
Frequency (MHz)
OUTPUT FLATNESS
VOUT = 2 VPP
5
65
0
60
-5
POUT (dB)
IM3 (dB)
70
3
10
VOUT = 1 VPP
ZL = 1 K Ω
2.5
AGC (V)
IM3 vs. AGC
75
2
55
50
-10
-15
45
-20
40
-25
-30
0
0.5
1
1.5
2
2.5
40
3
41
42
44
45
46
47
48
Frequency (MHz)
AGC (V)
NOISE FIGURE vs. AGC
IDD vs. VDD
45
0.14
40
0.12
35
Noise Figure (dB)
0.16
0.1
IDD (A)
43
0.08
0.06
0.04
30
25
20
15
10
RF=110MHz
0.02
5
0
0
0.5
1
1.5
2
2.5
3
3.5
0
4
0
VDD (V)
0.5
1
1.5
2
2.5
3
AGC (V)
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TYPICAL APPLICATION CIRCUIT
EPCOS X6864D
SAW FILTER
PIN Numbers
MLP-28 , TSSOP-20
2K OHM
1uH
VDD
1, X
23,14 22,13
GND
2, 20
NC*
3, 1
NC*
4, X
GND VIDEO
24,15
VIDEO IN 1
25, X
VIDEO IN 2
GND
AMP OUT 2
0 OHM
27,17 26,19
AMP OUT 1
28,18
0.1uF
GND
1uH
VIDEO
AMP
GND
GC 2
VID OUT 2
GC 1
VID OUT 1
GND
VDD VIDEO
21,16
20,11
4:1
VDD
GND
SPECTRUM
ANALYZER
50 OHM
19,12
VDD
18,10
0.01uF
5, X
200 OHM
0.1uF
17, 9
0.01uF
6, 2
VDD
7, 6
VDD
RF
SOURCE
16, 8
1000pF
GND
V AGC
GND
GND
GND
GND
RF IN 2
GND RF
RF IN 1
0.01uF
RF
AMP
VDD RF
8, 3
9, 4
10, X
11, 5
12, X
13, X
14, X
15, 7
1000pF
AGC
1M OHM
1M OHM
10K OHM
1000pF
0.01uF
Input Amplifier
This amplifier provides a maximum gain of 44 dB. The gain is
controlled by applying a DC voltage (from 0 to 3 V) to the AGC
pin, providing 27 dB of range. The output stage current can be
set between 10 mA (R = 20) and 30 mA (R = 0) by connecting
an external resistor from pin 1 to ground.
Video Amplifier
This amplifier provides a maximum gain of 55 dB. The gain is
controlled by applying a DC voltage (from 0 to 3 V) to the AGC
pin, providing 27 dB of range. The outputs of the video amp
are both open drain and require pull-up inductors to VDD. Up
to 2 VPP can be delivered into a 500 Ω load.
Note:
1. The input amplifier and video amplifier are controlled by a single
AGC so the overall dynamic range is the sum of the input amplifier
range and the video amplifier range.
2. Inserting a resistor between GC1 and GC2 will reduce overall gain
of the RF Amp stage. (A 300 Ω resistor will reduce gain by
approximately 10 dB.)
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ISG510067
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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ISG510067
PACKAGE INFORMATION MLP-28 (CON'T)
COMMON DIMENSIONS
VARIATIONS
SYMBOLS
MIN
NOM
MAX
SYMBOLS
MIN
NOM
MAX
A1
0
0.02
0.05
A
0.80
0.90
1.00
b
0.18
0.23
0.30
A3
r
0.20 REF
D
b/2
D2
TOLERANCES OF FORM AND POSITION
aaa
0.25
bbb
0.1
ccc
0.1
BODY SIZE
(MM)(MM)
PITCH
COUNT
LEAD
AA
BB
CC
DD
5.00x5.00
0.50
28
0.435
0.435
0.18
0.18
3.15
3.25
5.00 BSC
3.00
e
SUMMARY TABLE & PIN #1 DIMENSIONS
5
5.00 BSC
3.00
E
E2
NOTE
3.15
3.25
0.50 BSC
L
0.45
N
28
0.55
0.65
3
ND
7
6
NE
7
6
NOTE
1,2,4
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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ISG510067
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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