MAX2112ETI+T Maxim Integrated Products, MAX2112ETI+T Datasheet

no-image

MAX2112ETI+T

Manufacturer Part Number
MAX2112ETI+T
Description
RF Receiver Direct Conversion Tu ner for DVB-S2 -40 t
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX2112ETI+T

Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX2112 low-cost, direct-conversion tuner IC is
designed for satellite set-top and VSAT applications.
The IC is intended for 8PSK and Digital Video
Broadcast (DVB-S2) applications.
The MAX2112 directly converts the satellite signals
from the LNB to baseband using a broadband I/Q
downconverter. The operating frequency range extends
from 925MHz to 2175MHz.
The device includes an LNA and an RF variable-gain
amplifier, I and Q downconverting mixers, and baseband
lowpass filters with programmable cutoff frequency control
and digitally controlled baseband variable-gain amplifiers.
Together, the RF and baseband variable-gain amplifiers
provide more than 80dB of gain control range. The IC is
compatible with virtually all DVB-S2 demodulators.
The MAX2112 includes fully monolithic VCOs, as well as
a complete fractional-N frequency synthesizer.
Additionally, an on-chip crystal oscillator is provided
along with a buffered output for driving additional tuners
and demodulators. Synthesizer programming and device
configuration are accomplished with a 2-wire serial inter-
face. The IC features a VCO autoselect (VAS) function
that automatically selects the proper VCO. For multituner
applications, the device can be configured to have one
of two 2-wire interface addresses. A low-power standby
mode is available whereupon the signal path is shut
down while leaving the reference oscillator, digital inter-
face, and buffer circuits active, providing a method to
reduce power in single and multituner applications.
The MAX2112 is the most advanced DBS tuner avail-
able today. The low noise figure eliminates the need for
an external LNA. A small number of passive compo-
nents are needed to form a complete DVB-S2 RF front-
end solution. The tuner is available in a very small
28-pin thin QFN package.
19-0869; Rev 2; 5/10
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.
DirecTV and Dish Network DBS
DVB-S2
VSATs
________________________________________________________________ Maxim Integrated Products
General Description
Applications
Tuner for DVB-S2 Applications
Complete, Direct-Conversion
o 925MHz to 2175MHz Frequency Range
o Monolithic VCO
o High Dynamic Range: -75dBm to 0dBm
o Integrated Variable BW LP Filters: 4MHz to 40MHz
o Single +3.3V ±5% Supply
o Low-Power Standby Mode
o Address Pin for Multituner Applications
o Differential I/Q Interface
o I
o Very Small 28-Pin TQFN Package
* EP = Exposed paddle.
+ Denotes a lead(Pb)-free/RoHS-compliant package.
VCC_VCO
MAX2112CTI+
MAX2112ETI+
VCC_RF2
VCC_RF1
VCC_LO
2
GND
RFIN
GC1
C 2-Wire Serial Interface
Low Phase Noise: -97dBc/Hz at 10kHz
No Calibration Required
PART
1
2
3
4
5
6
7
+
8
28
EP
INTERFACE LOGIC
AND CONTROL
DIV2/DIV4
27
9
10
-40°C to +85°C
TEMP RANGE
26
Ordering Information
0°C to +70°C
Functional Diagram
MAX2112
SYNTHESIZER
FREQUENCY
25
11
Pin Configuration/
CONTROL
LPF BW
24
12
CORRECTION
DC OFFSET
23
13
PIN-PACKAGE
28 Thin QFN-EP*
28 Thin QFN-EP*
Features
22
14
21
20
19
18
17
16
15
IDC+
IOUT-
IOUT+
QOUT-
QOUT+
VCC_DIG
REFOUT
1

Related parts for MAX2112ETI+T

MAX2112ETI+T Summary of contents

Page 1

... QFN package. Applications DirecTV and Dish Network DBS DVB-S2 VSATs ________________________________________________________________ Maxim Integrated Products 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, Direct-Conversion Tuner for DVB-S2 Applications o 925MHz to 2175MHz Frequency Range ...

Page 2

Complete, Direct-Conversion Tuner for DVB-S2 Applications ABSOLUTE MAXIMUM RATINGS V to GND ...........................................................-0.3V to +3.9V CC All Other Pins to GND.................................-0. Input Power: RFIN .....................................................+10dBm VCOBYP, CPOUT, XTAL, REFOUT, IOUT_, QOUT_ , IDC_, QDC_ to GND Short-Circuit ...

Page 3

AC ELECTRICAL CHARACTERISTICS (MAX2112 Evaluation Kit +3.13V to +3.47V register settings except BBG[3:0] = 1011. Typical values measured at V PARAMETER MAIN SIGNAL PATH PERFORMANCE Input Frequency Range (Note 2) RF Gain-Control Range (GC1) 0.5V < ...

Page 4

Complete, Direct-Conversion Tuner for DVB-S2 Applications AC ELECTRICAL CHARACTERISTICS (continued) (MAX2112 Evaluation Kit +3.13V to +3.47V register settings except BBG[3:0] = 1011. Typical values measured at V PARAMETER XTAL/REFERENCE OSCILLATOR INPUT AND OUTPUT BUFFER XTAL Oscillator ...

Page 5

Evaluation Kit +3.3V except BBG[3:0] = 1011.) SUPPLY CURRENT vs. SUPPLY VOLTAGE +85° +25° -40° ...

Page 6

Complete, Direct-Conversion Tuner for DVB-S2 Applications (MAX2112 Evaluation Kit +3.3V except BBG[3:0] = 1011.) BASEBAND FILTER HIGHPASS FREQUENCY RESPONSE -10 -12 -14 100 1000 10,000 BASEBAND FREQUENCY (MHz) INPUT POWER ...

Page 7

Evaluation Kit +3.3V except BBG[3:0] = 1011.) INPUT RETURN LOSS vs. FREQUENCY 0.5V GC1 -10 -15 - 2.7V GC1 -25 900 1125 1350 FREQUENCY (MHz) PHASE NOISE vs. OFFSET ...

Page 8

Complete, Direct-Conversion Tuner for DVB-S2 Applications PIN NAME DC Power Supply for LNA. Connect to a +3.3V low-noise supply. Bypass to GND with a 1nF capacitor 1 VCC_RF2 connected as close as possib the ...

Page 9

PIN NAME 26 SDA 2-Wire Serial-Data Interface. Requires ≥ 1kΩ pullup resistor SCL 2-Wire Serial-Clock Interface. Requires ≥ 1kΩ pullup resistor ADDR Address. Must be connected to either ground (logic 0) or supply (logic ...

Page 10

Complete, Direct-Conversion Tuner for DVB-S2 Applications Table 2. N-Divider MSB Register BIT NAME BIT LOCATION (0 = LSB) DEFAULT FRAC 7 N[14:8] 6–0 Table 3. N-Divider LSB Register BIT NAME BIT LOCATION (0 = LSB) N[7:0] 7–0 Table 4. Charge-Pump ...

Page 11

Table 8. PLL Register BIT NAME BIT LOCATION (0 = LSB) DEFAULT D24 7 CPS 6 ICP 5 X 4–0 Table 9. VCO Register BIT NAME BIT LOCATION (0 = LSB) DEFAULT VCO[4:0] 7–3 VAS 2 ADL 1 ADE 0 ...

Page 12

Complete, Direct-Conversion Tuner for DVB-S2 Applications Table 11. Control Register BIT NAME BIT LOCATION (0 = LSB) DEFAULT STBY PWDN BBG[3:0] 3-0 Table 12. Shutdown Register BIT NAME BIT LOCATION (0 = LSB) DEFAULT ...

Page 13

Table 13. Test Register BIT NAME BIT LOCATION (0 = LSB) CPTST[2:0] 7– TURBO 3 LDMUX[2:0] 2–0 Table 14. Status Byte-1 Register BIT NAME BIT LOCATION (0 = LSB) POR 7 VASA 6 VASE ...

Page 14

Complete, Direct-Conversion Tuner for DVB-S2 Applications 2-Wire Serial Interface 2 The MAX2112 uses a 2-wire I C-compatible serial inter- face consisting of a serial-data line (SDA) and a serial- clock line (SCL). SDA and SCL facilitate bidirectional communication between the ...

Page 15

S DEVICE ADDRESS 1100000 0 T Figure 3. Example: Receive Data from Read Registers When addressed with a read command, the MAX2112 allows the master to read back a single register, ...

Page 16

Complete, Direct-Conversion Tuner for DVB-S2 Applications Alternatively, the MAX2112 can be set to autonomously choose a VCO by setting the VAS bit in the VCO regis- ter to logic-high. The VAS routine is initiated once the F-Divider LSB register word ...

Page 17

Complete, Direct-Conversion Tuner for DVB-S2 Applications SERIAL-CLOCK INPUT VCC_RF2 INTERFACE LOGIC AND CONTROL VCC_RF1 2 GND 3 RF INPUT RFIN GC1 DIV2 VCC_LO /DIV4 6 V ...

Page 18

Complete, Direct-Conversion Tuner for DVB-S2 Applications Chip Information PROCESS: BiCMOS 18 ______________________________________________________________________________________ Package Information For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status ...

Page 19

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 19 © 2010 Maxim Integrated Products ...

Related keywords