MAX2150ETI+T Maxim Integrated Products, MAX2150ETI+T Datasheet

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MAX2150ETI+T

Manufacturer Part Number
MAX2150ETI+T
Description
Modulator / Demodulator 3.0 Volt Wideband I- Q Modulator with Sig
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX2150ETI+T

Package / Case
TQFN-28
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX2150 is a complete wideband direct upconver-
sion quadrature modulator IC incorporating a 28-bit
sigma-delta fractional-N synthesizer. The device is tar-
geted for applications in the 700MHz to 2300MHz fre-
quency range.
The super-high-resolution sigma-delta fractional-N syn-
thesizer is capable of better than 50mHz resolution
when used with a 10MHz reference. Other features:
fully differential I/Q modulation inputs, an internal LO
buffer, and a 50Ω wideband output driver amplifier.
A standard 3-wire interface is provided for synthesizer
programming and overall device configuration. An on-
chip low-noise crystal oscillator amplifier is also includ-
ed and can be configured as a buffer when an external
reference oscillator is used.
The device typically achieves 34dBc of carrier and side-
band suppression at a -1dBm output level. The wide-
band, internally matched RF output can also
be disabled while the synthesizer and 3-wire bus remain
powered up for continuous programming.
The device consumes 72mA from a single +3.0V sup-
ply and is packaged in an ultra-compact 28-pin QFN
package (5mm
19-2389; Rev 4; 6/08
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.
Wireless Broadband
Satellite Uplink
LMDS
Wireless Base Station
Wideband I/Q Modulator with Sigma-Delta
5mm) with an exposed pad.
________________________________________________________________ Maxim Integrated Products
General Description
Applications
Fractional-N Synthesizer
♦ Single Voltage Supply (2.7V to 3.6V)
♦ 75MHz 3dB I/Q Input Bandwidth
♦ Wideband 50Ω RF Output: 700MHz to 2300MHz
♦ Ultra-Fine Frequency Resolution: 100mHz
♦ High Reference Frequency for Fast-Switching
♦ Ultra-Low Phase Noise
♦ Low Spurious and Reference Emissions
♦ -1dBm RMS Output Power
♦ 60dB RF Muting Control
♦ 34dBc Typical Carrier Suppression
♦ 34dBc Typical Sideband Suppression
♦ Software- and Hardware-Controlled Shutdown
* EP = Exposed paddle.
+ Denotes lead-free package.
VCC_PA
VCC_SD
MAX2150ETI
MAX2150ETI+
RFOUT
Applications
Modes
LOCK
TXEN
N.C.
N.C.
PART
VCC_RF
CLK
PROGRAMMING
AND CONTROL
DATA
I+
0
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
90
Ordering Information
∑ Δ – MOD
EN
I-
Functional Diagram
MAX2150
QFN
SHDN
Pin Configuration/
Q+
SYNEN
Q-
BUFEN
OSCIN VCC_XTAL
PFD
1/N
1/R
PIN-PACKAGE
BUFOUT
28 TQFN-EP*
28 TQFN-EP*
Features
CHP
LO+
LO-
VCC_LO
VCC_D
VCC_A
CHP
VCC_CHP
1

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MAX2150ETI+T Summary of contents

Page 1

... Wireless Broadband Satellite Uplink LMDS Wireless Base Station ________________________________________________________________ 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. Fractional-N Synthesizer ♦ Single Voltage Supply (2.7V to 3.6V) ♦ 75MHz 3dB I/Q Input Bandwidth ♦ ...

Page 2

Wideband I/Q Modulator with Sigma-Delta Fractional-N Synthesizer ABSOLUTE MAXIMUM RATINGS V to GND ...........................................................-0.3V to +6. Signals: LO+, LO-, OSCIN ........................................+10dBm Q-.......................................................................2V LO+, LO-, I+, I-, Q+, Q-, BUFEN, TXEN, CLK, DATA, EN, ...

Page 3

Wideband I/Q Modulator with Sigma-Delta AC ELECTRICAL CHARACTERISTICS = +2.7V to +3.6V, SHDN = PLLEN = TXEN = high, BUFEN =low. Input I/Q signals: F (MAX2150 EV kit I+, Q+ single-ended input, driven from AC-coupled source. I-, Q- ...

Page 4

Wideband I/Q Modulator with Sigma-Delta Fractional-N Synthesizer AC ELECTRICAL CHARACTERISTICS (continued) = +2.7V to +3.6V, SHDN = PLLEN = TXEN = high, BUFEN = low. Input I/Q signals: F (MAX2150 EV kit I+, Q+ single-ended input, driven from ...

Page 5

Wideband I/Q Modulator with Sigma-Delta = +3V, SHDN = PLLEN = TXEN = high, BUFEN = low. Input I/Q signals: F (MAX2150 EV kit gle-ended input, driven from AC-coupled source. I-, Q- single-ended inputs are AC-coupled to GND. ...

Page 6

Wideband I/Q Modulator with Sigma-Delta Fractional-N Synthesizer = +3V, SHDN = PLLEN = TXEN = high, BUFEN = low. Input I/Q signals: F (MAX2150 EV kit single-ended input, driven from AC-coupled source. I-, Q- single-ended inputs are AC-coupled ...

Page 7

Wideband I/Q Modulator with Sigma-Delta = +3V, SHDN = PLLEN = TXEN = high, BUFEN = low. Input I/Q signals: F (MAX2150 EV kit single-ended input, driven from AC-coupled source. I-, Q- single-ended inputs are AC-coupled to GND. ...

Page 8

Wideband I/Q Modulator with Sigma-Delta Fractional-N Synthesizer PIN NAME Modulator Enable Input. Set TXEN low to inhibit the RF and modulator circuits. This mode can be used 1 TXEN for quiet frequency synthesis. Supply Voltage Input for RFOUT Output Driver ...

Page 9

Wideband I/Q Modulator with Sigma-Delta PIN NAME Differential I-Channel Baseband Inputs to the Modulator. These pins connect directly to the bases of a 26, 27 I-, I+ differential pair and require an external common-mode bias voltage of 1.6V. Supply Voltage ...

Page 10

Wideband I/Q Modulator with Sigma-Delta Fractional-N Synthesizer Converting each to binary representation results in the following: N register = 86 = 0101,0110 F register value = 0000,1110,0110,0110,0110,0110,0110 The F-register value is then split between an upper 14 bits and a ...

Page 11

Wideband I/Q Modulator with Sigma-Delta Table 1. Register Tables MSB Upper (MSBs) Fractional Divider Value (F) 14 Bits (Default = 8192, 10000000000000 Lower (LSBs) Fractional Divider Value (F)14 Bits (Default 0 DEC, 00000000000000 13 12 ...

Page 12

Wideband I/Q Modulator with Sigma-Delta Fractional-N Synthesizer Table 6. Control Register BIT PWR-UP BIT ID NAME STATE CPX CP_MULT BUFEN 1 TE TXEN 1 PD PWDN 0 INT INT_MODE 0 Table 7. Device Modes HW ...

Page 13

Wideband I/Q Modulator with Sigma-Delta Table 8. TXEN Pin and Software Bit Definitions TXEN TX MODE PIN BIT enabled Table 9. Charge-Pump Registers CPX CP1 CP0 ...

Page 14

Wideband I/Q Modulator with Sigma-Delta Fractional-N Synthesizer 31-5239-52RFX R31 3.3kΩ VCC R32 R29 3.3kΩ OPEN R33 DCIN 3.3kΩ C28 0.1μF R34 3.3kΩ VCC J6 C3 VCC VCC 0.1μF C25 C31 1μF 0.1μ GND V _RF CC 1 ...

Page 15

... 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 ____________________ 15 © 2008 Maxim Integrated Products ...

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