19-0848; Rev 0; 10/07
KIT
ATION
EVALU
BLE
AVAILA
Complete Single-Conversion Television Tuner
General Description
The MAX3540 complete single-conversion television
tuner is designed for use in analog/digital terrestrial appli-
cations and digital set-top boxes. This television tuner
draws only 760mW of power from a +3.3V supply voltage.
The MAX3540 is designed to convert NTSC or ATSC sig-
nals in the 54MHz to 860MHz band to a 44MHz interme-
diate frequency (IF).
The MAX3540 includes a variable-gain low-noise ampli-
fier (LNA), multiband tracking filters, a harmonic-rejec-
tion mixer, a low-noise IF amplifier, an IF power detector,
and a variable-gain IF amplifier. The MAX3540 also
includes fully monolithic VCOs and tank circuits as well
as a complete frequency synthesizer. This highly inte-
grated design allows for low-power tuner-on-board
applications without the cost and power-dissipation
issues of dual-conversion tuner solutions.
The MAX3540 is specified for operation in the 0°C to
+85°C temperature range and is available in a leadless
48-pin flip-chip (fcLGA) package.
Features
♦
Low Power Consumption: 760mW (typ) from a
+3.3V Supply Voltage
♦
Integrated Tracking Filters
♦
ATSC A/74 Compliant
♦
40dB Adjacent Channel Protection Ratio (ACPR)
♦
4.4dB (typ) Low Noise Figure
♦
Small, 7mm x 7mm, fcLGA Leadless Package
♦
256-QAM-Compatible Phase-Noise Performance
♦
IF Overload Detector Controls RF Variable-Gain
Amplifier
♦
2-Wire I
2
C-Compatible Serial Control Interface
MAX3540
Ordering Information
PART
MAX3540ULM#G42
TEMP
RANGE
PIN-
PACKAGE
PKG
CODE
Applications
Televisions
Analog/Digital Terrestrial Receivers
Digital Set-Top Boxes
Cable Modems
VOIP Gateways
0°C to +85°C 48 fcLGA-EP* L4877A-E
*EP
= Exposed paddle.
Pin Configuration
GND_TUNE
ADDR2
ADDR1
VTUNE
XTALN
XTALP
MUX
LDO
38
V
CC
V
CC
V
CC
37
36
IFOUT1-
IFOUT1+
IFOVLD
V
CC
V
CC
GND
IFIN+
IFIN-
V
CC
GND
IFAGC
IFOUT2+
35
34
VCO
DIVIDER
33
32
V
REF
+
-
31
30
29
28
27
26
25
13
GND
14
GND
15
GND
16
GND
17
GND
18
GND
19
GND
20
GND
21
GND
22
GND
23
V
CC
24
IFOUT2-
48
47
46
45
44
43
CP
42
41
40
39
+
SCL
SDA
V
CC
UHF_IN
VHF_IN
RFGND2
LEXT
RFGND3
RFAGC
1
2
3
4
5
6
7
8
9
SERIAL
INTERFACE
÷
R
PD CP
÷
N
V
CC
10
GND 11
GND 12
MAX3540
EP
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Complete Single-Conversion Television Tuner
MAX3540
ABSOLUTE MAXIMUM RATINGS
V
CC
to GND ..............................................................-0.3V, +3.6V
RFIN, IFIN_, IFOUT1_, IFOUT2_, IFAGC, RFAGC,
VTUNE, LDO, MUX, CP, XTAL to GND ..-0.3V to (V
CC
+ 0.3V)
SDA, SCL, ADDR2, ADDR1 to GND......................-0.3V to +3.6V
IFOUT__ Short-Circuit Duration .....................................Indefinite
RF Input Power ...............................................................+10dBm
Continuous Power Dissipation (T
A
= +70°C)
48-Pin fcLGA (derate 25mW/°C above +70°C) ...............1.4W
Operating Temperature Range...............................0°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +165°C
Lead Temperature (soldering, 10s) .................................+240°C
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.
CAUTION!
ESD SENSITIVE DEVICE
DC ELECTRICAL CHARACTERISTICS
(MAX3540 Evaluation Kit, V
CC
= +3.1V to +3.5V, no RF signals at RF inputs, default register settings, V
RFAGC
= V
IFAGC
= +3V (minimum
attenuation), T
A
= 0°C to +85°C, unless otherwise noted. Typical values are at V
CC
= +3.3V, T
A
= +25°C, unless otherwise noted.)
PARAMETER
SUPPLY VOLTAGE AND CURRENT
Supply Voltage
Supply Current
RF and IF AGC Input Bias Current
RF and IF AGC Control Voltage
(Note 1)
Digital Input Logic-Level Low
Digital Input Logic-Level High
SERIAL INTERFACE
Input Logic-Level Low
Input Logic-Level High
Input Hysteresis
SDA, SCL Input Current
Output Logic-Level Low
Output Logic-Level High
3mA sink current
V
CC
-
0.5
-10
0.7 x
V
CC
0.05 x
V
CC
+10
0.4
0.3 x
V
CC
V
V
V
μA
V
V
0.7 x
V
CC
Receive mode
Shutdown mode
At +0.5V and +3V
Minimum attenuation
Maximum attenuation
-50
+3
+0.5
0.3 x
V
CC
+3.1
240
5
+50
+3.5
275
V
mA
μA
V
V
V
CONDITIONS
MIN
TYP
MAX
UNITS
2
_______________________________________________________________________________________
Complete Single-Conversion Television Tuner
AC ELECTRICAL CHARACTERISTICS
(MAX3540 Evaluation Kit, V
CC
= +3.1V to +3.5V, 75Ω system impedance, default register settings, V
RFAGC
= V
IFAGC
= +3V (minimum
attenuation), T
A
= 0°C to +85°C, unless otherwise noted. Typical values are at V
CC
= +3.3V, T
A
= +25°C, unless otherwise noted.)
PARAMETER
RF INPUT TO IFOUT1_ OUTPUT
CONDITIONS
MIN
TYP
MAX
UNITS
MAX3540
VHF_IN, LPF enabled, INPT = 00
Operating Frequency Range
(See Table 7)
Output Frequency
VHF_IN, LPF disabled, INPT = 01
UHF_IN, INPT = 10
Analog channel PIX carrier
Digital channel center frequency
Source impedance =
75
Ω
, load impedance =
200
Ω
Gain specification met
across these frequency
bands
Maximum gain, V
RFAGC
= 3V,
54MHz to 860MHz
Maximum gain, V
RFAGC
= 3V,
broadcast channels
Minimum gain, V
RFAGC
= 0.5V
VHF_IN
UHF_IN
54
100
300
45.75
44
34
28.0
34
-11
54
300
8
4.4
15
29
-13
5
11
-24.5
-3
-60
-60
-40
-40
100
300
860
MHz
MHz
Voltage Gain
45.5
dB
300
MHz
860
dB
dB
dBm
dBm
Operating Frequency Range
Input Return Loss
Noise Figure
Input IP2
(In-Band and Out-of-Band Tones)
Input IP3
(In-Band and Out-of-Band Tones)
Input P
1dB
Beats Within Output
Beats, Converted to Output
Gain Flatness
Isolation
Port-to-Port Isolation
Image Rejection
Worst case, selected channel
Maximum gain, V
RFVGC
= 3V (Note 1)
Maximum gain, V
RFVGC
= 3V
At 12.5dB of gain
Maximum gain, V
RFVGC
= 3V
At 12.5dB of gain
Maximum gain, V
RFVGC
= 3V
At 12.5dB of gain, CW tone at f
C
- 36MHz, tested at Ch
69 in UHF band
0dBmV PIX carrier level (Note 1)
VHF_IN from 150MHz to 960MHz
VHF_IN from 960MHz to 1400MHz
UHF_IN from 600MHz to 1400MHz
54MHz to 60MHz
5MHz to 50MHz, RF input to IF output, relative to desired
channel
Isolation between RF input ports at 215MHz
Measured at 91.5MHz
above desired channel’s
center frequency
5MHz to 65MHz
65MHz to 878MHz
10kHz offset
100kHz offset, 1.5kHz loop bandwidth
1MHz offset, 1.5kHz loop bandwidth
Balanced 50
Ω
load
54MHz to 860MHz
Broadcast channels,
T
A
= +25
°
C
66
dBm
dBc
dBc
1.5
dB
P-P
dBc
dB
dBc
60
30
70
Spurious Leakage at RF Input
-40
-40
-85
-105
-125
9
dBmV
Phase Noise (Single-Sideband)
Output Return Loss
dBc/Hz
dB
_______________________________________________________________________________________
3
Complete Single-Conversion Television Tuner
MAX3540
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX3540 Evaluation Kit, V
CC
= +3.1V to +3.5V, 75Ω system impedance, default register settings, V
RFAGC
= V
IFAGC
= +3V (minimum
attenuation), T
A
= 0°C to +85°C, unless otherwise noted. Typical values are at V
CC
= +3.3V, T
A
= +25°C, unless otherwise noted.)
PARAMETER
IF VARIABLE-GAIN AMPLIFIER
Input Impedance
Output Impedance
Balanced
Balanced (Note 1)
Source load = 300Ω,
output load = 300Ω
40MHz to 48MHz (Note 1)
V
IFAGC
= 3V (Note 1)
V
IFAGC
= 3V to 0.5V (Note 1)
At 44MHz, maximum gain, V
IFAGC
= 3V (Note 1)
< 0.35
V
OUT
= 1.5V
P-P
, 40dB < gain < 60dB (Note 1)
-54
0.7
±1
Negative polarity, overload reduces V
DET
(open collector, 0.3mA sink)
0.5
70
3.0
Maximum gain setting,
V
IFAGC
= 3V
Minimum gain setting,
V
IFAGC
= 0.5V
54
56
2000
300
65
dB
21
1.2
2
30
7.3
dB
V
P-P
dB/V
nV/√Hz
dB/dB
dBc
V
P-P
dB
V
V/V
Ω
Ω
CONDITIONS
MIN
TYP
MAX
UNITS
Passband Voltage Gain
Passband Gain Flatness
Output Voltage
AGC Gain Slope
Equivalent Input Voltage
Noise Density
Noise Figure Change vs.
Attenuation
IM3
Output Overload Attack Point
Attack-Point Accuracy
Detector Output Voltage Range
Detector Gain
FREQUENCY SYNTHESIZER
REFERENCE OSCILLATOR
Frequency
DIVIDERS
RF N-Divider Ratio
RF R-Divider Ratio
IF OVERLOAD DETECTOR (see the
IF Overload Detector
section)
4
256
8
31.50
CP = 00
0.5
1
1.5
2
±5
5
Tank frequency
Tank oscillator gain
2160
4400
500
400
CP = 01
CP = 10
CP = 11
32,767
127
250.00
MHz
LO PHASE DETECTOR AND CHARGE PUMP
Comparison Frequency
kHz
Charge-Pump Current
mA
Charge-Pump Three-State Current
Charge-Pump Current Matching
LOCAL OSCILLATOR (OSCILLATOR WITH NARROW BAND LOOP)
VCO Tuning Range
VCO Tuning Gain
2-WIRE SERIAL INTERFACE
Clock Frequency
nA
%
MHz
MHz/V
kHz
Note 1:
Guaranteed by design and characterization.
4
_______________________________________________________________________________________
Complete Single-Conversion Television Tuner
Pin Description
PIN
1
2
3, 10, 23,
28, 32, 33,
37, 41, 44
4
5
6
7
8
9
11–22,
27, 31
24
25
26
29
30
34
35
36
38
39
40
42
43
45
46
47
48
EP
NAME
SCL
SDA
V
CC
UHF_IN
VHF_IN
RFGND2
LEXT
RFGND3
RFAGC
GND
IFOUT2-
IFOUT2+
IFAGC
IFIN-
IFIN+
IFOVLD
IFOUT1+
IFOUT1-
LDO
GND_TUNE
VTUNE
MUX
CP
XTALN
XTALP
ADDR1
ADDR2
EP
FUNCTION
2-Wire Serial-Clock Interface. Requires a pullup resistor to V
CC
.
2-Wire Serial-Data Interface. Requires a pullup resistor to V
CC
.
Power-Supply Connections. Bypass each supply pin to ground with a 1000pF capacitor.
UHF RF Input. Matched to 75Ω over the operating band. Requires a DC-blocking capacitor.
VHF RF Input. Matched to 75Ω over the operating band. Requires a DC-blocking capacitor.
RF Ground. Bypass to the PCB’s ground plane with a 1000pF capacitor.
Do not connect RFGND2
and RFGND3 together.
RF VGA Supply Voltage. Connect through a 270nH pullup inductor to V
CC
.
RF Ground. Bypass to the PCB’s ground plane with a 1000pF capacitor.
Do not connect RFGND2
and RFGND3 together.
RF AGC Gain-Control Voltage. Accepts a DC voltage from 0.5V (minimum gain) to 3V (maximum gain).
Ground. Connect to the PCB’s ground plane.
Inverting IF-VGA Output. Connect to the input of an anti-aliasing filter. Requires a DC-blocking capacitor.
Noninverting IF-VGA Output. Connect to the input of an anti-aliasing filter. Requires a DC-blocking
capacitor.
IF AGC Gain-Control Voltage. Accepts a DC voltage from 0.5V (minimum gain) to 3V (maximum gain).
Inverting IF-VGA Input. Connect to the output of an IF-SAW filter.
Noninverting IF-VGA Input. Connect to the output of an IF-SAW filter.
IF Power Detector Open-Collector Output. Requires a 10kΩ pullup resistor to V
CC
.
Noninverting IF-LNA Output. Requires a DC-blocking capacitor.
Inverting IF-LNA Output. Requires a DC-blocking capacitor.
VCO LDO Bypass. Bypass to ground with a 0.47μF capacitor.
VTUNE Ground Connection. Connect to the PCB ground plane. All loop filter component GND must
be connected to this pin (see the
Typical Application Circuit).
VCO Tuning Input. Connect to the PLL loop filter output.
Test Output. Leave this pin unconnected during normal operation.
Charge-Pump Output. Connect to the PLL loop filter input.
Crystal Oscillator Feedback. See the
Typical Application Circuit.
Crystal Input. Requires a DC-blocking capacitor.
2-Wire Serial-Interface Address Line 1. This pin along with ADDR2 sets the device address for the
I
2
C-compatible serial interface.
2-Wire Serial-Interface Address Line 2. This pin along with ADDR1 sets the device address for the
I
2
C-compatible serial interface.
Exposed Paddle. Solder evenly to the PCB ground plane for proper operation.
MAX3540
_______________________________________________________________________________________
5
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