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參數(shù)資料
| 型號： | MAX2420 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Hex Buffers/Drivers With Open-Collector High-Voltage Outputs 14-SO 0 to 70 |
| 中文描述： | 900MHz鏡頻抑制收發(fā)器 |
| 文件頁數(shù)： | 1/14頁 |
| 文件大小： | 250K |
| 代理商： | MAX2420 |
General Description
The MAX2420/MAX2421/MAX2422/MAX2460/MAX2463
are highly integrated front-end ICs that provide the lowest
cost solution for cordless phones and ISM-band radios
operating in the 900MHz band. All devices incorporate
transmit and receive image-reject mixers to reduce filter
cost. They operate with a +2.7V to +4.8V power supply,
allowing direct connection to a three-cell battery stack.
The receive path incorporates an adjustable-gain LNA
and an image-reject downconverter with 35dB image
suppression. These features yield excellent combined
downconverter noise figure (4dB) and high linearity with
an input third-order intercept point (IP3) of up to +2dBm.
The transmitter consists of a variable-gain IF amplifier
with more than 35dB control range, an image-reject
upconverter with 35dB image rejection, and a power-
amplifier (PA) predriver that produces up to +2dBm (in
some applications serving as the final power stage).
All devices include an on-chip local oscillator (LO),
requiring only an external varactor-tuned LC tank for
operation. The integrated divide-by-64/65 dual-modulus
prescaler can also be set to a direct mode, in which it
acts as an LO buffer amplifier. Four separate power-
down inputs can be used for system power manage-
ment, including a 0.5μA shutdown mode. These parts
are compatible with commonly used modulation
schemes such as FSK, BPSK, and QPSK, as well as fre-
quency hopping and direct sequence spread-spectrum
systems. All devices come in a 28-pin SSOP package.
For applications using direct VCO or BPSK transmit mod-
ulation, as well as receive image rejection, consult the
MAX2424/MAX2426 data sheet. For receive-only devices,
refer to the MAX2440/MAX2441/MAX2442 data sheet.
________________________Applications
Cordless Phones
Wireless Telemetry
Wireless Networks
Spread-Spectrum Communications
Two-Way Paging
Features
o
Receive/Transmit Mixers with 35dB Image Rejection
o
Adjustable-Gain LNA
o
Up to +2dBm Combined Receiver Input IP3
o
4dB Combined Receiver Noise Figure
o
>35dB of Transmit Power Control Range
o
PA Predriver Provides up to +2dBm
o
Low Current Consumption: 23mA Receive
26mA Transmit
9.5mA Oscillator
o
0.5μA Shutdown Mode
o
Operates from Single +2.7V to +4.8V Supply
M
900MHz Image-Reject Transceivers
________________________________________________________________
Maxim Integrated Products
1
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
GND
GND
GND
TANK
TXON
PREOUT
PREGND
MOD
DIV1
VCOON
RXON
CAP2
N.C.
TXIN
LNAGAIN
TXOUT
GND
GND
RXIN
TXGAIN
RXOUT
CAP1
SSOP
TOP VIEW
MAX2420
MAX2421
MAX2422
MAX2460
MAX2463
TANK
V
CC
V
CC
V
CC
V
CC
V
CC
___________________Pin Configuration
19-1234; Rev 5; 8/03
EVALUATION KIT
AVAILABLE
PART
MAX2420
EAI
MAX2421
EAI
MAX2422
EAI
MAX2460
EAI
MAX2463
EAI
-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
28 SSOP
28 SSOP
28 SSOP
28 SSOP
28 SSOP
_______________Ordering Information
Functional Diagram appears on last page.
High side
INJECTION
TYPE
f
RF
+ 10.7
f
RF
+ 46
LO FREQ
(MHz)
High side
High side
f
RF
+ 70
f
RF
- 10.7
MAX2422
MAX2421
70
46
Low side
f
RF
- 110
MAX2463
110
MAX2420
PART
10.7
IF FREQ
(MHz)
______________________Selector Guide
Low side
MAX2460
10.7
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.
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PDF描述 |
|---|---|
| MAX2422EAI | Hex Buffers/Drivers With Open-Collector High-Voltage Outputs 14-SO 0 to 70 |
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| MAX2420EAI+ | 功能描述:射頻發(fā)射器 Integrated Circuits (ICs) RoHS:否 制造商:Micrel 類型:ASK Transmitter 封裝 / 箱體:SOT-23-6 工作頻率:300 MHz to 450 MHz 封裝:Reel |
| MAX2420EAI+T | 功能描述:射頻發(fā)射器 Integrated Circuits (ICs) RoHS:否 制造商:Micrel 類型:ASK Transmitter 封裝 / 箱體:SOT-23-6 工作頻率:300 MHz to 450 MHz 封裝:Reel |
| MAX2420EAI-T | 功能描述:射頻發(fā)射器 RoHS:否 制造商:Micrel 類型:ASK Transmitter 封裝 / 箱體:SOT-23-6 工作頻率:300 MHz to 450 MHz 封裝:Reel |
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