MAX2821 datasheet(2/23 Pages) MAXIM

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2.4GHz 802.11b Zero-IF Transceivers

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ABSOLUTE MAXIMUM RATINGS

DC ELECTRICAL CHARACTERISTICS

(MAX2820/MAX2821 EV kit: VCC = +2.7V to +3.6V, RF_GAIN = VIH, 0V

≤ VTX_GC ≤ +2.0V, 0V ≤ VRX_AGC ≤ +2.0V, RBIAS = 12kΩ, no

input signals at RF and baseband inputs, all RF inputs and outputs terminated into 50

Ω, receiver baseband outputs are open, trans-

mitter baseband inputs biased at +1.2V, registers set to default power-up settings, TA = -40

°C to +85°C, unless otherwise noted.

Typical values are at VCC = +2.7V, TA = +25

°C, unless otherwise noted.) (Note 1)

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.

VCC Pins to GND ...................................................-0.3V to +4.2V

RF Inputs: RX_RFP, RX_RFN to GND.........-0.3V to (VCC + 0.3V)

RF 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 to (VCC + 0.3V)

Baseband Outputs: RX_BBIP, RX_BBIN, RX_BBQP,

RX_BBQN to GND ...................................-0.3V to (VCC + 0.3V)

Analog Inputs: RX_AGC, TX_GC, TUNE, ROSCN,

ROSCP to GND .......................................-0.3V to (VCC + 0.3V)

Analog Outputs: PA_BIAS, CP_OUT, VREF

to GND....................................................-0.3V to (VCC + 0.3V)

Digital Inputs: RX_ON, TX_ON, SHDNB, CSB, SCLK,

DIN, RF_GAIN, RX_1K to GND...............-0.3V to (VCC + 0.3V)

Bias Voltages: RBIAS, BYP ..................................+0.9V to +1.5V

Short-Circuit Duration Digital Outputs: DOUT, RX_DET .........10s

RF Input Power: RX_RFN, RX_RFP.................................+10dBm

Continuous Power Dissipation (TA = +70

°C)

48-Lead QFN (derate 27.0mW/

°C above +70°C) .....2162mW

Operating Temperature Range ...........................-40

°C to +85°C

Junction Temperature ......................................................+150

°C

Storage Temperature Range .............................-65

°C to +160°C

Lead Temperature (soldering, 10s) .................................+300

°C

PARAMETERS

CONDITIONS

MIN

TYP

MAX

UNITS

Supply Voltage

2.7

3.6

Shutdown-Mode Supply Current

(MAX2821 Only)

SHDNB = VIL, RX_ON = VIL,

TX_ON = VIL

TA = -40°C to +85

°C

µA

TA = +25°C25

Standby-Mode Supply Current

SHDNB = VIH, RX_ON = VIL,

TX_ON = VIL

TA = -40°C to +85

°C40

TA = +25°C

100

Receive-Mode Supply Current

SHDNB = VIH, RX_ON = VIH,

TX_ON = VIL

TA = -40°C to +85

°C

110

TA = +25

°C70

Transmit-Mode Supply Current

SHDNB = VIH, RX_ON = VIL,

TX_ON = VIH

TA = -40°C to +85

°C90

LOGIC INPUTS: SHDNB, RX_ON, TX_ON, SCLK, DIN, CSB, RF_GAIN

Digital Input Voltage High (VIH)VCC - 0.5

Digital Input Voltage Low (VIL)

0.5

Digital Input Current High (IIH)-5

µA

Digital Input Current Low (IIL)-5

µA

LOGIC OUTPUTS: DOUT, RX_DET

Digital Output Voltage High (VOH) Sourcing 100µA

VCC - 0.5

Digital Output Voltage Low (VOL)

Sinking 100µA

0.5

RX BASEBAND I/O

RX_AGC Input Resistance

≤ VRX_AGC ≤ +2.0V

Ω

RX I/Q Common-Mode Voltage

1.25

RX I/Q Output DC Offsets

VOLTAGE REFERENCE

Reference Voltage Output

TA = -40°C to +85°C, ILOAD = ±2mA

1.1

1.2

1.3

Output Impedance

Ω

CAUTION! ESD SENSITIVE DEVICE

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