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| 型号： | MAX19712ETN+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 24/36页 |
| 文件大小： | 0K |
| 描述： | IC ANLG FRNT END 56-TQFN |
| 产品变化通告： | Product Discontinuation 09/Jun/2011 |
| 标准包装： | 2,500 |
| 位数： | 10 |
| 通道数： | 2 |
| 功率（瓦特）： | 50mW |
| 电压 - 电源，模拟： | 3V |
| 电压 - 电源，数字： | 3V |
| 封装/外壳： | 56-WFQFN 裸露焊盘 |
| 供应商设备封装： | 56-TQFN-EP（7x7） |
| 包装： | 带卷 (TR) |
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30
______________________________________________________________________________________
MAX19712
10-Bit, 22Msps, Full-Duplex
Analog Front-End
30
______________________________________________________________________________________
pared to single-ended mode. Figure 10 shows an RF
transformer converting the MAX19712 Tx DAC differen-
tial analog outputs to single-ended.
Using Op-Amp Coupling
Drive the MAX19712 Rx ADC with op amps when a balun
transformer is not available. Figures 11 and 12 show the
Rx ADC being driven by op amps for AC-coupled single-
ended and DC-coupled differential applications.
Amplifiers such as the MAX4454 and MAX4354 provide
high speed, high bandwidth, low noise, and low distortion
to maintain the input signal integrity. The op-amp circuit
shown in Figure 12 can also be used to interface with the
Tx DAC differential analog outputs to provide gain or
buffering. The Tx DAC differential analog outputs cannot
be used in single-ended mode because of the internally
generated common-mode level. Also, the Tx DAC analog
outputs are designed to drive a differential input stage
with input impedance ≥ 70kΩ. If single-ended outputs are
desired, use an amplifier to provide differential-to-single-
ended conversion and select an amplifier with proper
input common-mode voltage range.
FDD Application
Figure 13 illustrates a typical FDD application circuit.
The MAX19712 interfaces directly with the MAX2392
and MAX2395 provide a complete “RF-to-Bits” front-
end solution for WCDMA applications. The MAX19712
can also interface with the MAX2021 in RFID applica-
tions and other radio systems. The MAX19712 provides
system benefits to digital baseband developers:
Fast Time-to-Market
High-Performance, Low-Power Analog Functions
Low-Risk, Proven Analog Front-End Solution
No Mixed-Signal Test Times
No NRE Charges
No IP Royalty Charges
Enables Digital Baseband and Scale with 65nm to
90nm CMOS
Grounding, Bypassing, and
Board Layout
The MAX19712 requires high-speed board layout design
techniques. Refer to the MAX19712 EV kit data sheet for a
board layout reference. Place all bypass capacitors as
close to the device as possible, preferably on the same
side of the board as the device, using surface-mount
devices for minimum inductance. Bypass VDD to GND
with a 0.1F ceramic capacitor in parallel with a 2.2F
capacitor. Bypass OVDD to OGND with a 0.1F ceramic
capacitor in parallel with a 2.2F capacitor. Bypass REFP,
REFN, and COM each to GND with a 0.33F ceramic
capacitor. Bypass REFIN to GND with a 0.1F capacitor.
Figure 11. Single-Ended Drive for Rx ADC
MAX19712
0.1
μF
1k
Ω
1k
Ω
100
Ω
100
Ω
CIN
22pF
CIN
22pF
QAP
QAN
COM
IAP
IAN
0.1
μF
RISO
50
Ω
RISO
50
Ω
REFP
REFN
VIN
0.1
μF
1k
Ω
1k
Ω
100
Ω
100
Ω
CIN
22pF
CIN
22pF
0.1
μF
RISO
50
Ω
RISO
50
Ω
REFP
REFN
VIN
Figure 10. Balun Transformer-Coupled Differential-to-Single-
Ended Output Drive for Tx DAC
MAX19712
IDP
IDN
VOUT
QDP
QDN
VOUT
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX19712EVCMODU+ | 功能描述:数据转换 IC 开发工具 MAX19710/13 Eval Kit RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
| MAX19712EVKIT | 功能描述:数据转换 IC 开发工具 10-Bit 22Msps Full-Duplex Analog Front-End RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
| MAX19712EVKIT+ | 功能描述:数据转换 IC 开发工具 MAX19710/13 Eval Kit RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
| MAX19713C/D+GG3 | 功能描述:ADC / DAC多通道 Ultra-Low Power AFE with Integrated Tx DACs Rx ADCs and Auxiliary Control Data Converters RoHS:否 制造商:Texas Instruments 转换速率: 分辨率:8 bit 接口类型:SPI 电压参考: 电源电压-最大:3.6 V 电源电压-最小:2 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-40 |
| MAX19713C/D-GG3 | 功能描述:ADC / DAC多通道 10-Bit 45Msps Full-Duplex Analog Front-End RoHS:否 制造商:Texas Instruments 转换速率: 分辨率:8 bit 接口类型:SPI 电压参考: 电源电压-最大:3.6 V 电源电压-最小:2 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-40 |
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