19-0067; Rev 0; 2/05
KIT
ATION
EVALU
BLE
AVAILA
HI-IF Single-Chip Broadband Tuners
General Description
Features
♦
Fully Integrated HI-IF Filter
♦
Fully Integrated VCOs, No External Components
or Traces
♦
Low 8dB Noise Figure
♦
High Linearity—Greater Than 54dBc, CSO, CTB,
X-MOD
♦
Industry’s Smallest Footprint
♦
Superior Phase Noise for 256-QAM, 8-VSB, and
COFDM
MAX3570/MAX3571/MAX3573
The MAX3570/MAX3571/MAX3573 low-cost, broad-
band, dual-conversion tuner ICs are designed for use
in digital television receivers. Each IC integrates all
necessary RF functions, including an integrated HI-IF
filter, fully integrated VCOs, and an integrated IF VGA.
The operating frequency range extends from 50MHz to
878MHz while providing over 60dB RF/IF gain-control
range. The MAX3570/MAX3571 have an IF frequency
centered at 44MHz, while the MAX3573 has an IF out-
put centered at 36MHz.
These devices include a variable-gain front-end, achiev-
ing an overall 8dB noise figure. A dual synthesizer gen-
erates both local oscillator (LO) frequencies, providing
superior phase noise performance of -86dBc/Hz at
10kHz. The integrated HI-IF filter achieves 55dBc (typ) of
image rejection. Only an IF SAW filter, passive loop fil-
ters, and a crystal are needed to complete a single-chip
tuner. Device programming and configuration are
accomplished with a 3-wire serial interface for the
MAX3570, and with a 2-wire serial interface for the
MAX3571/MAX3573.
The MAX3570/MAX3571/MAX3573 are available in a
48-pin QFN-EP package and are specified for the com-
mercial (0°C to +70°C) temperature range.
Ordering Information
PART
MAX3570CGM
MAX3571CGM
MAX3573CGM
TEMP RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
PIN-PACKAGE
48 QFN-EP*
48 QFN-EP*
48 QFN-EP*
*EP
= Exposed paddle.
Applications
LNABIAS
Pin Configurations/
Functional Diagrams
IFOUT2+
IFOUT2-
RFVGA
IFVGA
BIAS
V
CC
IFIN-
GND
IFIN+
38
DVB-C Digital Terrestrial Receivers
ATSC Digital Terrestrial Receivers
Cable Modems
V
CC
1
48
47
46
45
44
43
42
V
CC
41
40
39
V
CC
37
36 IFOUT1-
35 IFOUT1+
34 GND
33 V
CC
32 GND
31 V
CC
30 TUNE2
29 LOCFLT2
28 GND
27 V
CC
26 CPOUT2
25 V
CC
24
DOCSIS/EURO DOCSIS Cable Modems
ITU J.83 Digital Set-Top Boxes
RFIN+ 2
RFIN- 3
GND 4
V
CC
5
GND 6
V
CC
7
MAX3570
HI-IF
FILTER
Selector Guide
PART
MAX3570
MAX3571
MAX3573
SERIAL INTERFACE
3-Wire
2-Wire
2-Wire
IF CENTER
FREQUENCY
(MHz)
44
44
36
TUNE1 8
LOCFLT1 9
GND 10
I.C. 11
CS 12
13
14
15
16
17
18
19
20
21
22
23
3-WIRE SERIAL
INTERFACE
DUAL SYNTHESIZER
OSCOUT
DIV/LD
OSCIN
SDA
I.C.
CPOUT1
GND
Pin Configurations/Functional Diagrams continued at end
of data sheet.
________________________________________________________________
Maxim Integrated Products
1
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.
GND
GND
V
CC
SCL
V
CC
HI-IF Single-Chip Broadband Tuners
MAX3570/MAX3571/MAX3573
ABSOLUTE MAXIMUM RATINGS
V
CC
to GND ...........................................................-0.3V to +5.5V
IFIN_, IFOUT1_, IFOUT2_, RFIN_, TUNE_,
LOCFLT_, CPOUT_, OSCIN, OSCOUT,
IFVGA, RFVGA, BIAS, LNABIAS,
ADDR_,
CS,
SCL, SDA, DIV/LD...............-0.3V to (V
CC
+ 0.3V)
Continuous Power Dissipation (T
A
= +70°C)
48-Pin QFN (derate 27mW/°C above +70°C) ............2162mW
Operating Temperature Range...............................0°C to +70°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
CAUTION!
ESD SENSITIVE DEVICE
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
DC ELECTRICAL CHARACTERISTICS
(MAX357_ EV kit, V
CC
= +4.75V to +5.25V, R
BIAS
= 5.9kΩ ±1%, no AC signal applied, T
A
= 0°C to +70°C, unless otherwise noted.
Typical values are at V
CC
= +5.0V, T
A
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
SUPPLY VOLTAGE AND SUPPLY CURRENT
Supply Voltage
Supply Current
RF and IF VGA Input Bias Current
RF and IF VGA Control Voltage
LOGIC INTERFACE
Input-Logic Low (V
IL
)
Input-Logic High (V
IH
)
Input Logic Current
Output-Logic Low
Output-Logic High
Sink current = 3mA
Source current = 3mA
2.8
2.3
-10
+10
0.4
0.9
V
V
µA
V
V
At T
A
= +25°C, V
RFVGA
= +3.0V
At T
A
= +70°C, V
RFVGA
= +0.5V
V
RFVGA
= V
IFVGA
= +0.5V and +3.0V
Maximum gain
Minimum gain
-50
3
0.5
4.75
320
385
+50
5.25
V
mA
µA
V
CONDITIONS
MIN
TYP
MAX
UNITS
2
_______________________________________________________________________________________
HI-IF Single-Chip Broadband Tuners
AC ELECTRICAL CHARACTERISTICS
(MAX357_ EV kit, V
CC
= +4.75V to +5.25V, R
BIAS
= 5.9kΩ ±1%,
inputs terminated to 75Ω,
f
RFIN
= 50MHz to 878MHz, f
IF
=
45.75MHz (MAX3570/MAX3571), f
IF
= 38.9MHz (MAX3573), f
COMP1
= 1MHz, f
COMP2
= 62.5kHz, T
A
= 0°C to +70°C, unless other-
wise noted. Typical values are at V
CC
= +5.0V, T
A
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
Operating Frequency Range
Input Return Loss
Voltage Gain
Gain-Reduction Range
Gain Flatness
Noise Figure
CONDITIONS
Gain specification met across this frequency band
Worst case across band, 75Ω, any RFVGA setting
Z
SOURCE
= 75Ω, Z
LOAD
= 200Ω,
V
RFVGA
= +3.0V
Measured at 50MHz
V
RFVGA
= +3.0V at f
RFIN
= 878MHz vs. 50MHz
V
RFVGA
= 0.5V at f
RFIN
= 878MHz vs. 50MHz
V
RFVGA
= +3.0V
V
RFVGA
= +3.0V, T
A
= +25°C to +70°C,
V
CC
= 4.85V to 5.15V, f
RF
= 860MHz
At 12dB gain reduction, T
A
= +25°C to +70°C,
V
CC
= 4.85V to 5.15V, f
RF
= 860MHz
V
RFVGA
= +3.0V, T
A
= +25°C to +70°C,
V
CC
= 4.85V to 5.15V
At 12dB gain reduction, T
A
= +25°C to +70°C,
V
CC
= 4.85V to 5.15V
Beats within Output
Channel Flatness
Isolation
0dBmV PIX carrier level (Note 2)
From PIX to (PIX + 4) MHz
5MHz to 150MHz, RF input to IF output (Note 3)
Measured at 91MHz above desired PIX
(MAX3570/MAX3571)
Image Rejection
Measured at 77.75MHz above desired PIX
(MAX3573)
Spurious at RF Input (Note 3)
50MHz to 878MHz
Above 878MHz (LO and LO harmonics)
f
OFFSET
= 1kHz
Single Sideband Phase Noise
Output Return Loss
f
OFFSET
= 10kHz, BW
LOOP
= 2.5kHz
f
OFFSET
= 100kHz, BW
LOOP
= 2.5kHz
Balanced, 50Ω
-62
-86
-105
9
dB
dBc/Hz
50
55
-54
-48
+3
dBmV
-0.5
-63
50
T
A
= +25°C
T
A
= +70°C
31.5
30.0
30
-1.5
-2
7.9
34
dBm
52.5
+8
dBm
+18
-48
+0.3
-68
55
dBc
+1.0
dBc
dB
dBc
+1.5
+2
MIN
50
8
38.5
37
45.0
43.5
TYP
MAX
878
UNITS
MHz
dB
dB
dB
dB
dB
MAX3570/MAX3571/MAX3573
OVERALL REQUIREMENTS (RF INPUT TO 1st IF OUTPUT)
IIP2
IIP3
_______________________________________________________________________________________
3
HI-IF Single-Chip Broadband Tuners
MAX3570/MAX3571/MAX3573
AC ELECTRICAL CHARACTERISTICS
(MAX357_ EV kit, V
CC
= +4.75V to +5.25V, R
BIAS
= 5.9kΩ ±1%,
inputs terminated to 1kΩ,
Z
LOAD
= 300Ω,
f
IF
= 40MHz to 48MHz,
T
A
= 0°C to +70°C, unless otherwise noted. Typical values are at V
CC
= +5.0V, T
A
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
SECOND IF STAGE
Input Impedance
Output Impedance
Passband Voltage Gain
Passband Flatness
Maximum Output Voltage
VGA Gain Slope
-3dB Bandwidth
Noise Figure
Noise Figure vs. Attenuation
IIP3
OIP3
PSRR
V
IFVGA
= +3.0V to +0.5V
(Note 3)
f
IF
= 44MHz, V
IFVGA
= +3.0V
First 10dB back-off
Gain = 45dB, V
OUT
= 1.5V
P-P
Gain = 27dB, V
OUT
= 1.5V
P-P
V
OUT
= 1.5V
P-P
, V
IFVGA
= +3.0V to +0.5V (Note 3)
50mV
P-P
at 200kHz
5.1
0.3
-27.5
-11.3
25
-57
10
Balanced
Balanced (Note 3)
Z
SOURCE
= 1.1kΩ, Z
LOAD
= 300Ω, V
IFVGA
= +3.0V
V
IFVGA
= +0.5V
From PIX to (PIX - 4) MHz for 45.75MHz PIX
frequency (Note 3)
3.2
20
180
50
53
14.5
1.7
100
57
23
0.2
kΩ
Ω
dB
dB
V
P-P
dB/V
MHz
dB
dB/dB
dBm
dBm
dB
CONDITIONS
MIN
TYP
MAX
UNITS
4
_______________________________________________________________________________________
HI-IF Single-Chip Broadband Tuners
SYNTHESIZER ELECTRICAL CHARACTERISTICS
(MAX357_ EV kit, V
CC
= +4.75V to +5.25V, R
BIAS
= 5.9kΩ ±1%, f
COMP1
= 1MHz, f
COMP2
= 62.5kHz, T
A
= 0°C to +70°C, unless oth-
erwise noted. Typical values are at V
CC
= +5.0V, T
A
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
1st LOCAL OSCILLATOR (LO1)
Tuning Range
VCO Tuning Gain
1st LOCAL OSCILLATOR (LO1) DIVIDER
RF1 N-Divider Ratio
RF1 R-Divider Ratio
1st LOCAL OSCILLATOR (LO1) PHASE DETECTOR AND CHARGE PUMP
Phase-Detector Phase Noise
Charge-Pump Source/Sink Matching
Charge-Pump Tri-State Current
2nd LOCAL OSCILLATOR (LO2)
Tuning Range
VCO Tuning Gain
2nd LOCAL OSCILLATOR (LO2) DIVIDER
RF2 N-Divider Ratio
RF2 R-Divider Ratio
2nd LOCAL OSCILLATOR (LO2) PHASE DETECTOR AND CHARGE PUMP
Phase-Detector Phase Noise
Charge-Pump Source/Sink Matching
Charge-Pump Tri-State Current
f
OFFSET
= 2kHz (Note 3)
Correlate locked vs. unlocked
RF2
-7
-142
6
+7
dBc
%
nA
512
2
65,535
127
1175
25
1193
70
MHz
MHz/V
f
OFFSET
= 2kHz (Note 3)
Correlate locked vs. unlocked
RF1
-7
-142
6
+7
dBc
%
nA
256
1
8191
31
1274
40
2111
120
MHz
MHz/V
CONDITIONS
MIN
TYP
MAX
UNITS
MAX3570/MAX3571/MAX3573
LOGIC INTERFACE
(MAX357_ EV kit, V
CC
= +4.75V to +5.25V, R
BIAS
= 5.9kΩ ±1%, T
A
= 0°C to +70°C, unless otherwise noted.) (Note 1)
PARAMETER
Maximum Clock Frequency
CONDITIONS
MIN
400
TYP
MAX
UNITS
kHz
Note 1:
These parameters are production tested from T
A
= +25°C to +70°C, and are guaranteed by design and characterization at
T
A
= 0°C.
Note 2:
When using the tuning table provided in the EV kit documentation.
Note 3:
These parameters are guaranteed by design and characterization, and are not production tested.
_______________________________________________________________________________________
5
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