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MAX4473EUA中文资料PDF规格书
厂商型号 |
MAX4473EUA |
参数属性 | MAX4473EUA 封装/外壳为8-TSSOP,8-MSOP(0.118",3.00mm 宽);包装为带;类别为RF/IF,射频/中频和 RFID > RF 功率控制器 IC;产品描述:IC RF PWR CNTRL AMP PA GSM 8UMAX |
功能描述 | Low-Cost, Low-Voltage, PA Power Control Amplifier for GSM Applications in 8-Pin 關MAX |
文件大小 |
140.29 Kbytes |
页面数量 |
6 页 |
生产厂商 | MaximIntegrated |
企业简称 |
Maxim【美信半导体】 |
中文名称 | 美信半导体官网 |
原厂标识 | |
数据手册 | |
更新时间 | 2024-5-31 14:12:00 |
MAX4473EUA规格书详情
General Description
The MAX4473 PA power control IC is intended for closed-loop bias control of GSM power amplifiers. The device facilitates accurate control of the current delivered to the power amplifier (PA) through a control voltage. The error amplifier senses the voltage drop across an external current-sense resistor placed between the supply and the PA. The output of the error amplifier adjusts the PA gain until the current is proportional to the power control voltage applied to the MAX4473. This unique topology is useful in time-division-multiple access (TDMA) systems, such as GSM, where accurate transmit burst shaping and power control is required.
User-selectable current sensing and gain setting resistors maximize flexibility.
The MAX4473 operates from a single 2.7V to 6.5V supply and typically draws 1.2mA of supply current. The error amplifier has a common-mode range that extends from 1V to VCC. The power control input and error amplifier outputs swing rail-to-rail. A low-power shutdown mode reduces supply current to less than 1µA and activates an on-board active pull-down at the error amplifier output. Fast enable/disable times of 0.9µs reduce average power consumption without compromising dynamic performance. The MAX4473 is available in a space-saving 8-pin µMAX® package.
Features
♦ Optimized for GSM Timing Requirements
♦ 2.7V to 6.5V Single-Supply Operation
♦ 1.2mA Supply Current
♦ ≤ 1µA Supply Current in Shutdown Mode
♦ Guaranteed 1.5µs Enable/Disable Times
♦ Active Output Pull-Down in Shutdown Mode
♦ Rail-to-Rail Error Amplifier Output
♦ Rail-to-Rail Power Control Input
♦ Output Drive Capability—500Ω and 300pF Loads
♦ 1V to VCC Current Sense Input Common-Mode Voltage Range
♦ No Phase-Reversal for Common-Mode Voltage from 0 to VCC
♦ External Current Sensing and Gain Setting
Resistors Maximize Flexibility
♦ Available in a Space-Saving 8-Pin µMAX
Applications
GSM Cellular Phones
Cordless Phones
Precision Current Control
High-Frequency Servo Loops
产品属性
- 产品编号:
MAX4473EUA
- 制造商:
Analog Devices Inc./Maxim Integrated
- 类别:
RF/IF,射频/中频和 RFID > RF 功率控制器 IC
- 包装:
带
- 射频类型:
GSM
- 封装/外壳:
8-TSSOP,8-MSOP(0.118",3.00mm 宽)
- 供应商器件封装:
8-uMAX/uSOP
- 描述:
IC RF PWR CNTRL AMP PA GSM 8UMAX
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
MAXIM |
24+ |
MSOP8 |
2600 |
原装现货假一赔十 |
询价 | ||
MAXIM |
22+ |
MSOP |
21250 |
MAXIM代理原装正品!现货库存!价格优势 |
询价 | ||
MAXIM |
02+ |
SSOP8 |
9400 |
特价热销现货库存100%原装正品欢迎来电订购! |
询价 | ||
Maxim(美信) |
22+ |
NA |
6000 |
原厂原装现货 |
询价 | ||
MAXIM |
23+ |
MSOP-8 |
3000 |
全新原装、诚信经营、公司现货销售! |
询价 | ||
MAXIM |
2020+ |
SOP-8 |
350000 |
100%进口原装正品公司现货库存 |
询价 | ||
MAXIM/美信 |
23+ |
MSOP |
33500 |
全新进口原装现货,假一罚十 |
询价 | ||
MAXIM |
23+ |
SOP-8 |
28500 |
授权代理直销,原厂原装现货,假一罚十,特价销售 |
询价 | ||
MAXIM |
01+ |
MSOP8 |
4201 |
一级代理,专注军工、汽车、医疗、工业、新能源、电力 |
询价 | ||
MAXIM |
2023+ |
SOP |
5800 |
进口原装,现货热卖 |
询价 |