MAX2820ETM-T Maxim Integrated Products, MAX2820ETM-T Datasheet

no-image

MAX2820ETM-T

Manufacturer Part Number
MAX2820ETM-T
Description
RF Transceiver 2.4GHz 802.11b Zero-If Transceiver
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX2820ETM-T

Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MAX2820ETM-T
Manufacturer:
MAXIM
Quantity:
47 098
Part Number:
MAX2820ETM-TD
Manufacturer:
AMD
Quantity:
209
The MAX2820/MAX2820A and MAX2821/MAX2821A
single-chip zero-IF transceivers are designed for the
802.11b (11Mbps) applications operating in the
2.4GHz to 2.5GHz ISM band. The transceivers are
nearly identical, except the MAX2821 and MAX2821A
also provide a low-power shutdown mode and an ana-
log voltage reference output. The MAX2820A/
MAX2821A are cost-reduced versions, virtually identi-
cal in pinout and performance to the MAX2820/
MAX2821. The transceivers include all the circuitry
required to implement an 802.11b RF-to-baseband
transceiver solution, providing a fully integrated
receive path, transmit path, VCO, frequency synthesis,
and baseband/control interface. Only a PA, RF switch,
RF BPF, and a small number of passive components are
needed to form the complete radio front-end solution.
The ICs eliminate the need for external IF and base-
band filters by utilizing a direct-conversion radio archi-
tecture and monolithic baseband filters for both
receiver and transmitter. They are specifically opti-
mized for 802.11b (11Mbps CCK) applications. The
baseband filtering and Rx and Tx signal paths support
the CCK modulation scheme for BER = 10
required sensitivity levels.
The devices are suitable for the full range of 802.11b
data rates (1Mbps, 2Mbps, 5.5Mbps, and 11Mbps) and
also the higher-rate 22Mbps PBCC
MAX2820 and MAX2821 are available in a 7mm × 7mm
48-lead QFN package. The MAX2820, MAX2821,
MAX2820A, and MAX2821A are available in a 48-lead
thin QFN package.
19-2493; Rev 5; 5/05
PBCC is a trademark of Texas Instruments, Inc.
Pin Configuration/Functional Diagram and Typical
Application Circuit appear at end of data sheet.
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.
802.11b 11Mbps WLAN
802.11b
802.11a + b Dual-Band WLAN
2.4GHz ISM Band Radios
+
22Mbps PBCC High-Data-Rate WLAN
________________________________________________________________ Maxim Integrated Products
General Description
2.4GHz 802.11b Zero-IF Transceivers
Applications
TM
standard. The
-5
at the
o 2.4GHz to 2.5GHz ISM Band Operation
o 802.11b (11Mbps CCK and 22Mbps PBCC) PHY
o Complete RF-to-Baseband Transceiver
o -97dBm Rx Sensitivity at 1Mbps
o -87dBm Rx Sensitivity at 11Mbps
o +2dBm Transmit Power (11Mbps CCK)
o Single +2.7V to +3.6V Supply
o Low-Current Shutdown Mode (MAX2821 only)
o Very Small 48-Pin QFN Package(s)
MAX2820ETM-TD
MAX2820ETM+TD
MAX2820AETM-TD
MAX2820AETM+TD
MAX2821ETM-TD
MAX2821ETM+TD
MAX2821AETM-TD
MAX2821AETM+TD
Compatible
Direct-Conversion Upconverters and
Monolithic Low-Phase-Noise VCO
Integrated Baseband Lowpass Filters
Integrated PLL with 3-Wire Serial Interface
Digital Bias Control for External PA
Transmit Power Control (Range > 25dB)
Receive Baseband AGC (Range > 65dB)
Complete Baseband Interface
Digital Tx/Rx Mode Control
Analog Receive Level Detection
PART
Downconverters
Ordering Information
-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
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
PIN-PACKAGE
48 Thin QFN
Lead Free
48 Thin QFN
Lead Free
48 Thin QFN
Lead Free
48 Thin QFN
Lead Free
Features
1

Related parts for MAX2820ETM-T

MAX2820ETM-T Summary of contents

Page 1

... Rx Sensitivity at 11Mbps o +2dBm Transmit Power (11Mbps CCK the o Single +2.7V to +3.6V Supply o Low-Current Shutdown Mode (MAX2821 only) o Very Small 48-Pin QFN Package(s) TM standard. The Applications PART MAX2820ETM-TD MAX2820ETM+TD MAX2820AETM-TD MAX2820AETM+TD MAX2821ETM-TD MAX2821ETM+TD MAX2821AETM-TD MAX2821AETM+TD Features Downconverters Ordering Information TEMP RANGE PIN-PACKAGE -40° ...

Page 2

Zero-IF Transceivers ABSOLUTE MAXIMUM RATINGS V Pins to GND ...................................................-0.3V to +4. Inputs: RX_RFP, RX_RFN to GND.........-0. Outputs: TX_RFP, TX_RFN to GND..................-0.3V to +4.2V Baseband Inputs: TX_BBIP, TX_BBIN, TX_BBQP, TX_BBQN to GND ...................................-0.3V ...

Page 3

Zero-IF Transceivers DC ELECTRICAL CHARACTERISTICS (continued) (MAX2820/MAX2821 EV kit +2.7V to +3.6V, RF_GAIN = V CC input signals at RF and baseband inputs, all RF inputs and outputs terminated into 50Ω, receiver baseband outputs are open, ...

Page 4

Zero-IF Transceivers AC ELECTRICAL CHARACTERISTICS—RECEIVE MODE (continued) (MAX2820/MAX2821 EV kit +2.7V to +3.6V outputs = 500mV , SHDNB = RX_ON = V P-P RBIAS = 12kΩ +2mA 45kHz, differential RF ...

Page 5

Zero-IF Transceivers AC ELECTRICAL CHARACTERISTICS—TRANSMIT MODE (MAX2820/MAX2821 EV kit +2.7V to +3.6V inputs = 400mV , SHDNB = TX_ON = V P-P 45kHz, differential RF output matched to 50Ω through a balun, baseband input ...

Page 6

Zero-IF Transceivers AC ELECTRICAL CHARACTERISTICS—PA BIAS (MAX2820/MAX2821 EV kit +2.7V to +3.6V, SHDNB = V CC ters set to default power-up settings +25°C, unless otherwise noted. Typical values are PARAMETER Resolution ...

Page 7

Zero-IF Transceivers AC ELECTRICAL CHARACTERISTICS—SYSTEM TIMING (MAX2820/MAX2821 EV kit +2.7V to +3.6V CSB = V , RBIAS = 12kΩ +2mA noted. Typical values are +2.7V, f ...

Page 8

Zero-IF Transceivers (MAX2820/MAX2821 EV kit +2.7V band inputs = 400mV , I = +2mA, BW P-P CP input biased at +1.2V, registers set to default power-up settings, T SUPPLY CURRENT vs. TEMPERATURE 100 RECEIVE, ...

Page 9

Zero-IF Transceivers (MAX2820/MAX2821 EV kit +2.7V band inputs = 400mV , I = +2mA, BW P-P CP input biased at +1.2V, registers set to default power-up settings, T RECEIVER BASEBAND OUTPUT SPECTRUM 0 -10 ...

Page 10

Zero-IF Transceivers (MAX2820/MAX2821 EV kit +2.7V inputs = 400mV , I = +2mA, BW P-P CP PLL biased at +1.2V, registers set to default power-up settings, T TRANSMITTER BASEBAND FILTER RESPONSE ...

Page 11

Zero-IF Transceivers VCC_LNA 1 PROGRAMMING AND MODE CONTROL VREF 2 (MAX2821/MAX2821A) 3 RF_GAIN RX_RFN 4 RX_RFP 5 6 VCC_REF RBIAS 7 MAX2820/ MAX2821 TX_RFP 8 9 TX_RFN PA_BIAS 10 ∑ VCC_DRVR 11 TX_GC 12 13 ...

Page 12

Zero-IF Transceivers PIN NAME Supply Voltage for LNA. Bypass with a capacitor as close to the pin as possible. Do not share the 1 VCC_LNA bypass capacitor ground vias with other branches. N.C. No Connection. Not internally connected ...

Page 13

Zero-IF Transceivers PIN NAME Supply Voltage for Digital Circuitry. Bypass with a capacitor as close to the pin as possible. Do not 20 VCC_DIG share the bypass capacitor ground vias with other branches. 21 N.C. No Connection. Not ...

Page 14

Zero-IF Transceivers PIN NAME Receive Positive Quadrature Baseband Output. Analog low-impedance differential buffer output. 39 RX_BBQP Connect output directly to baseband ADC input. Internally biased to 1.2V common-mode voltage and can drive loads up to 5kΩ || 5pF. ...

Page 15

Zero-IF Transceivers CSB t CSO SCLK DIN BIT DOUT Figure 1. MAX2820/MAX2821 Serial-Interface Timing Diagram Table 1. Operating-Mode Truth Table MODE CONTROL INPUTS OPERATING MODE SHDNB Shutdown 0 Standby 1 Receive 1 Transmit 1 Operating ...

Page 16

Zero-IF Transceivers Table 2. Programming Register Definition Summary (Address and Data) 4 ADDRESS BITS REGISTER NAME MSB TEST ENABLE SYNTH ...

Page 17

Zero-IF Transceivers Table 3. Register Power-Up Default States REGISTER ADDRESS ENABLE 0001 SYNTH 0010 CHANNEL 0011 RECEIVE 0100 TRANSMIT 0101 Table 4. Block-Enable Register (ENABLE) ADDRESS DATA BIT CONTENT DEFAULT D11 E(11) D10 E(10) D9 E(9) D8 E(8) ...

Page 18

Zero-IF Transceivers Table 5. Synthesizer Register (SYNTH) ADDRESS DATA BIT D11: (MAX2820A/ D5:D0 Table 6. Channel Frequency Block Register (CHANNEL) ADDRESS DATA BIT D11: D6:D0 Table 7a. Receive ...

Page 19

Zero-IF Transceivers Table 7b. Receive Settings Register (RECEIVE), (MAX2820A/MAX2821A Only) ADDRESS DATA BIT D11:D9 D8:D6 0100 D5:D3 D2:D0 Table 8. Transmit Settings Register (TRANSMIT) ADDRESS DATA BIT D11: D3:D0 However, the filter frequency and ...

Page 20

Zero-IF Transceivers Operating Characteristics section graph Receiver Voltage Gain vs. Gain-Control Voltage. Some local noise filtering through a simple RC network at the input is permissible. However, the time constant of this network should be kept sufficiently low ...

Page 21

Zero-IF Transceivers Transmit Gain Control The transmit gain-control input provides a direct analog control over the transmit path gain. The transmit gain is controlled by an external voltage at pin TX_GC. The typ- ical gain-control characteristic is provided ...

Page 22

Zero-IF Transceivers DAC OUTPUT FROM BASEBAND IC VCC_LNA OPTIONAL CONNECTION TO BASEBAND VREF (MAX2821/MAX2821A) RF_GAIN RX_RFN RX_RFP VCC_REF RBIAS TX_RFP TX_RFN PA_BIAS TO PA BIAS INPUT VCC_DRVR TX_GC DAC OUTPUT FROM BASEBAND IC 22 ______________________________________________________________________________________ ...

Page 23

Zero-IF Transceivers (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) ______________________________________________________________________________________ Package Information PACKAGE OUTLINE 32,44,48L QFN, 7x7x0. 21-0092 H 2 ...

Page 24

Zero-IF Transceivers (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages ______________________________________________________________________________________ Package Information (continued) PACKAGE OUTLINE, 32,44,48L QFN, 7x7x0.90 MM 21-0092 ...

Page 25

Zero-IF Transceivers (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) D D/2 e ______________________________________________________________________________________ Package Information (continued) k E/2 (NE- ...

Page 26

... 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. 26 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2005 Maxim Integrated Products Package Information (continued) Printed USA is a registered trademark of Maxim Integrated Products, Inc ...

Related keywords