MAX2308EGI Maxim Integrated Products, MAX2308EGI Datasheet

no-image

MAX2308EGI

Manufacturer Part Number
MAX2308EGI
Description
Modulator / Demodulator CDMA IF VGAs and I-Q Demodulators with V
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX2308EGI

Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX2306/MAX2308/MAX2309 are IF receivers
designed for dual-band, dual-mode, and single-mode
N-CDMA and W-CDMA cellular phone systems. The
signal path consists of a variable-gain amplifier (VGA)
and I/Q demodulator. The devices feature guaranteed
+2.7V operation, a gain control range of over 110dB,
and high input IP3 (-31dBm at 35dB gain, 3.4dBm at
-35dB gain).
Unlike similar devices, the MAX2306 family of receivers
includes dual oscillators and synthesizers to form a
self-contained IF subsystem. The synthesizer’s refer-
ence and RF dividers are fully programmable through a
3-wire serial bus, enabling dual-band system architec-
tures using any common reference and IF frequency.
The differential baseband outputs have enough band-
width to suit both N-CDMA and W-CDMA systems, and
offer saturated output levels of 2.7Vp-p at a low +2.75V
supply voltage. Including the low-noise voltage-con-
trolled oscillator (VCO) and synthesizer, the MAX2306
draws only 26mA from a +2.75V supply in CDMA (dif-
ferential IF) mode.
The MAX2306/MAX2308/MAX2309 are available in 28-
pin Thin QFN and QFN packages.
19-2014; Rev 3; 8/04
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.
Single/Dual/Triple-Mode CDMA Handsets
Globalstar Dual-Mode Handsets
Wireless Data Links
W-CDMA Handsets
Wireless Local Loop (WLL)
MAX2306
MAX2308
MAX2309
PART
________________________________________________________________ Maxim Integrated Products
General Description
CDMA IF VGAs and I/Q Demodulators
Cellular CDMA,
Cellular CDMA,
External AMPS,
Cellular CDMA,
PCS CDMA
PCS CDMA
PCS CDMA
MODE
AMPS,
AMPS,
Applications
Dual Band, Triple Mode (Drives External
with VCO and Synthesizer
Dual Band, Triple Mode with Common
Dual Band, Triple Mode with Two
♦ Complete IF Subsystem Includes VCO and
♦ Supports Dual-Band, Triple-Mode Operation
♦ VGA with >110dB Gain Control
♦ Quadrature Demodulator
♦ High Output Level (2.7V)
♦ Programmable Charge-Pump Current
♦ Supports Any IF Frequency Between 40MHz and
♦ 3-Wire Programmable Interface
♦ Low Supply Voltage (+2.7V)
Pin Configurations appear at end of data sheet.
Block Diagram appears at end of data sheet.
*Exposed paddle
AMPS Discriminator)
Synthesizer
300MHz
MAX2306EGI
MAX2306ETI
MAX2308EGI
MAX2308ETI
MAX2309EGI
MAX2309ETI
DESCRIPTION
IF VCOs
IF VCO
PART
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
Ordering Information
Selector Guide
40MHz to 300MHz
70MHz to 300MHz
70MHz to 300MHz
INPUT RANGE
PIN-PACKAGE
28 QFN-EP*
28 TQFN-EP*
28 QFN-EP*
28 TQFN-EP*
28 QFN-EP*
28 TQFN-EP*
Features
1

Related parts for MAX2308EGI

MAX2308EGI Summary of contents

Page 1

... Programmable Charge-Pump Current ♦ Supports Any IF Frequency Between 40MHz and 300MHz ♦ 3-Wire Programmable Interface ♦ Low Supply Voltage (+2.7V) PART MAX2306EGI MAX2306ETI MAX2308EGI Applications MAX2308ETI MAX2309EGI MAX2309ETI *Exposed paddle Pin Configurations appear at end of data sheet. Block Diagram appears at end of data sheet. ...

Page 2

CDMA IF VGAs and I/Q Demodulators with VCO and Synthesizer ABSOLUTE MAXIMUM RATINGS V to GND ...........................................................-0.3V to +6.0V CC SHDN to GND.............................................-0. STBY, BUFEN, MODE, EN, DATA, CLK, DIVSEL ...........................................-0. VGC to GND...............-0.3V, the lesser ...

Page 3

CDMA IF VGAs and I/Q Demodulators AC ELECTRICAL CHARACTERISTICS (MAX2306/MAX2308/MAX2309 EV kit 19.2MHz, 0.6Vp-p synthesizer locked with passive 3rd-order lead-lag loop filter, SHDN = high, VGC set for f = 183.7MHz REF +35dB voltage gain, differential ...

Page 4

CDMA IF VGAs and I/Q Demodulators with VCO and Synthesizer AC ELECTRICAL CHARACTERISTICS (continued) (MAX2306/MAX2308/MAX2309 EV kit 19.2MHz, 0.6Vp-p synthesizer locked with passive 3rd-order lead-lag loop filter, SHDN = high, VGC set for f = 183.7MHz, f ...

Page 5

CDMA IF VGAs and I/Q Demodulators (MAX2306/MAX2308/MAX2309 EV kits, V synthesizer locked with passive 3rd-order lead-lag loop filter, SHDN = high, VGC set for +35dB voltage gain, differential output load = 10kΩ, all power levels referred to 50Ω, T RECEIVE ...

Page 6

CDMA IF VGAs and I/Q Demodulators with VCO and Synthesizer (MAX2306/MAX2308/MAX2309 EV kits, V synthesizer locked with passive 3rd-order lead-lag loop filter, SHDN = high, VGC set for +35dB voltage gain, differential output load = 10kΩ, all power levels referred ...

Page 7

CDMA IF VGAs and I/Q Demodulators PIN MAX2306 MAX2308 MAX2309 1, 28 — — — — — — — — — — ...

Page 8

CDMA IF VGAs and I/Q Demodulators with VCO and Synthesizer PIN MAX2306 MAX2308 MAX2309 — — — 28 Exposed Paddle _______________Detailed Description The MAX2306 is intended for dual-band (PCS ...

Page 9

CDMA IF VGAs and I/Q Demodulators 2.4kΩ 0.068µF 33pF 10kΩ 33pF 10kΩ 33pF 10kΩ 33pF 10kΩ Figure 1. MAX2306 Typical Operating Circuit Voltage-Controlled Oscillator, Buffers, and Quadrature Generation The LO signal for downconversion is provided by a ...

Page 10

CDMA IF VGAs and I/Q Demodulators with VCO and Synthesizer Table 1. MAX2306 Control Register States OPERATIONAL ACTION MODE RESULT Shutdown pin completely SHUTDOWN powers down the chip 0 in shutdown register bit leaves SHUTDOWN serial port active 0 in ...

Page 11

CDMA IF VGAs and I/Q Demodulators Table 2. MAX2308 Control Register States OPERATIONAL ACTION MODE RESULT Shutdown pin completely shuts down SHUTDOWN chip 0 in shutdown register bit leaves seri- SHUTDOWN al port active 0 in standby pin turns off ...

Page 12

CDMA IF VGAs and I/Q Demodulators with VCO and Synthesizer 2.4kΩ 0.068µF 0.01µF 33pF 10kΩ 2pF 33pF 10kΩ Figure 2. MAX2308 Typical Operating Circuit 12 ______________________________________________________________________________________ 47pF 0.01µF 0.01µF BYP BYP 0.01µF MAX2308 CP_OUT BYP 0.01µF GND FM- ...

Page 13

CDMA IF VGAs and I/Q Demodulators Table 3. MAX2309 Control Register States OPERATIONAL ACTION MODE RESULT Shutdown pin com- SHUTDOWN pletely powers down the chip 0 in shutdown register SHUTDOWN bit leaves serial bus active 0 in standby pin turns ...

Page 14

CDMA IF VGAs and I/Q Demodulators with VCO and Synthesizer 0.068µF 2.4kΩ 10kΩ 10kΩ DISCRIMINATOR 455kHz V CC LIMITER I FM Figure 3. MAX2309 Typical Operating Circuit 14 ______________________________________________________________________________________ 47pF 0.01µF BYP BYP 0.01µF CP_OUT BYP GND STBY DIVSEL 33pF ...

Page 15

CDMA IF VGAs and I/Q Demodulators TANK_+ Figure 4. Voltage-Controlled Oscillators VCO_H DATA 13-BIT CONTROL VCO_L Figure 5. 3-Wire Control Block Diagram ______________________________________________________________________________________ with VCO and Synthesizer V CC 800µ ...

Page 16

CDMA IF VGAs and I/Q Demodulators with VCO and Synthesizer MSB *SB DATA *START BIT MUST BE LOGIC HIGH. CLK RISE AND FALL REQUIRED PRIOR TO EN GOING LOW. EN Figure 6. 3-Wire Interface Timing Diagram Table 4. Control Register, ...

Page 17

CDMA IF VGAs and I/Q Demodulators START BIT SHIFT REGISTER 1 M1 REGISTER REGISTER CP1 AND R1 REGISTERS CP 1/1 CP2 AND R2 REGISTERS CP 2/1 /1 CTRL REGISTER TM Figure 7. Programming ...

Page 18

CDMA IF VGAs and I/Q Demodulators with VCO and Synthesizer MAX2306 MAX2308 MAX2309 SB 1 SHIFT REGISTER M1 REGISTER M2 REGISTER 2 CP1 R1 REGISTER 2 CP2 R2 REGISTER DS TM POL CONTROL 2 ...

Page 19

CDMA IF VGAs and I/Q Demodulators V CC FM- FM+ CDMA+ CDMA- BYP BYP MAX2306 TANKL+ BYP AGND TANKL- ______________________________________________________________________________________ with VCO and Synthesizer DAC AVCC QOUT+ QOUT- VGA DATA EN CLK PHASE CHARGE PUMP DETECTOR ...

Page 20

... 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. 20 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2004 Maxim Integrated Products 21 FM+ N ...

Related keywords