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参数资料
| 型号： | MAX2820ETM+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 14/26页 |
| 文件大小： | 0K |
| 描述： | IC TXRX 802.11B 2.4GHZ 48-TQFN |
| 标准包装： | 2,500 |
| 频率： | 2.4GHz ~ 2.5GHz |
| 数据传输率 - 最大： | 11Mbps |
| 调制或协议： | 802.11 b |
| 应用： | ISM |
| 功率 - 输出： | 3dBm |
| 灵敏度： | -97dBm |
| 电源电压： | 2.5 V ~ 5.5 V |
| 电流 - 接收： | 80mA |
| 电流 - 传输： | 70mA |
| 数据接口： | PCB，表面贴装 |
| 天线连接器： | PCB，表面贴装 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 48-WFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
2.4GHz 802.11b Zero-IF Transceivers
Pin Description (continued)
PIN
39
40
41
42
43
44
45
46
47
48
Exposed
Paddle
NAME
RX_BBQP
RX_BBQN
RX_BBIN
RX_BBIP
RX_DET
N.C.
VCC_BUF
RX_ON
VCC_RMX
TX_ON
RX_AGC
GND
DESCRIPTION
Receive Positive Quadrature Baseband Output. Analog low-impedance differential buffer output.
Connect output directly to baseband ADC input. Internally biased to 1.2V common-mode voltage and
can drive loads up to 5k ? || 5pF.
Receive Negative Quadrature Baseband Output. Analog low-impedance differential buffer output.
Connect output directly to baseband ADC input. Internally biased to 1.2V common-mode voltage and
can drive loads up to 5k ? || 5pF.
Receive Negative In-Phase Baseband Output. Analog low-impedance differential buffer output.
Connect output directly to baseband ADC input. Internally biased to 1.2V common-mode voltage and
can drive loads up to 5k ? || 5pF.
Receive Positive In-Phase Baseband Output. Analog low-impedance differential buffer output.
Connect output directly to baseband ADC input. Internally biased to 1.2V and can drive loads up to
5k ? || 5pF.
Receive Level Detection Output. Digital CMOS output. Connect output directly to baseband IC input.
Used to indicate RF input level. Logic high for input levels above -49dBm (typ). Logic low for levels
below -54dBm (typ). (MAX2820 and MAX2821)
No Connection (MAX2820A/MAX2821A)
Supply Voltage for Receiver Baseband Buffer. Bypass with a capacitor as close to the pin as
possible. Do not share the bypass capacitor ground vias with other branches.
Receiver-On Control Input. Digital CMOS input. Connect to baseband IC mode control CMOS output.
Supply Voltage for Receiver Downconverter. Bypass with a capacitor as close to the pin as possible.
Do not share the bypass capacitor ground vias with other branches.
Transmitter-On Control Input. Digital CMOS input. Connect directly to baseband IC mode control
CMOS output.
Receive AGC Control. Analog high-impedance input. Connect directly to baseband IC DAC voltage
output. See the Typical Operating Characteristics for Gain vs. V RX_AGC .
DC and AC Ground Return for IC. Connect to PC board ground plane using multiple vias.
Changes in “A” Version
The MAX2820A/MAX2821A are cost-reduced versions
of the original MAX2820/MAX2821, intended as a drop-
in replacement — no changes to PC board layout, BOM,
or control software are required. Functionally, the “ A ”
version removes unused functions and programmability
while maintaining virtually identical performance char-
acteristics. The changes are detailed below.
Synthesizer
The original device has the ability to program the
charge-pump source/sink current (±1mA or ±2mA); the
“ A ” version sets the charge-pump current at ±2mA, and
bit SYNTH:D6 (ICP) should now always be pro-
grammed to be 1.
Receive Filter
The original device has the ability to control the base-
band LPF corner; the “ A ” version sets the LPF corner at
8.0MHz. Register bits RECEIVE:D2 – D0 are now “ don ’ t
cares. ”
Receive-Level Detector (RSSI)
The original device has a receive-level detect output (pin
43, “ RX_DET ” ); the “ A ” version removes this functionality.
Pin 43 is a no-connect (N.C.) on the “ A ” version.
14
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相关代理商/技术参数 |
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| MAX2820ETM-TD | 功能描述:射频接收器 RoHS:否 制造商:Skyworks Solutions, Inc. 类型:GPS Receiver 封装 / 箱体:QFN-24 工作频率:4.092 MHz 工作电源电压:3.3 V 封装:Reel |
| MAX2820ETM-W | 功能描述:射频接收器 RoHS:否 制造商:Skyworks Solutions, Inc. 类型:GPS Receiver 封装 / 箱体:QFN-24 工作频率:4.092 MHz 工作电源电压:3.3 V 封装:Reel |
| MAX2820EVKIT | 功能描述:射频接收器 RoHS:否 制造商:Skyworks Solutions, Inc. 类型:GPS Receiver 封装 / 箱体:QFN-24 工作频率:4.092 MHz 工作电源电压:3.3 V 封装:Reel |
| MAX2821AETM | 功能描述:射频接收器 RoHS:否 制造商:Skyworks Solutions, Inc. 类型:GPS Receiver 封装 / 箱体:QFN-24 工作频率:4.092 MHz 工作电源电压:3.3 V 封装:Reel |
| MAX2821AETM+ | 功能描述:射频接收器 RF and RFID RoHS:否 制造商:Skyworks Solutions, Inc. 类型:GPS Receiver 封装 / 箱体:QFN-24 工作频率:4.092 MHz 工作电源电压:3.3 V 封装:Reel |
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