參數(shù)資料
型號： MAX19713
廠商： Maxim Integrated Products, Inc.
英文描述： 10-Bit, 45Msps, Full-Duplex Analog Front-End
中文描述： 10位、45Msps、全雙工模擬前端
文件頁數(shù)： 30/37頁
文件大?。?/td> 892K
代理商： MAX19713
M
10-Bit, 45Msps, Full-Duplex
Analog Front-End
30
______________________________________________________________________________________
Rx ADC inputs only requires half the signal swing com-
pared to single-ended mode. Figure 10 shows an RF
transformer converting the MAX19713 Tx DAC differen-
tial analog outputs to single-ended.
Using Op-Amp Coupling
Drive the MAX19713 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-cou-
pled single-ended and DC-coupled differential applica-
tions. 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 ana-
log 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
≥
70k
Ω
. If single-ended outputs are desired, use an
amplifier to provide differential-to-single-ended conver-
sion and select an amplifier with proper input common-
mode voltage range.
FDD Application
Figure 13 illustrates a typical FDD application circuit. The
MAX19713 interfaces directly with the radio front-ends to
provide a complete “RF-to-Bits” solution for FDD applica-
tions such as 802.11, 802.16, WCDMA, and proprietary
radio systems. The MAX19713 provides several 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 MAX19713 requires high-speed board layout design
techniques. Refer to the MAX19713 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 V
DD
to GND
with a 0.1μF ceramic capacitor in parallel with a 2.2μF
capacitor. Bypass OV
DD
to OGND with a 0.1μF ceramic
Figure 11. Single-Ended Drive for Rx ADC
MAX19713
0.1
μ
F
1k
Ω
1k
Ω
100
Ω
100
Ω
C
IN
22pF
C
IN
22pF
QAP
QAN
COM
IAP
IAN
0.1
μ
F
R
ISO
50
Ω
R
ISO
50
Ω
REFP
REFN
V
IN
0.1
μ
F
1k
Ω
1k
Ω
100
Ω
100
Ω
C
IN
22pF
C
IN
22pF
0.1
μ
F
R
ISO
50
Ω
R
ISO
50
Ω
REFP
REFN
V
IN
Figure 10. Balun Transformer-Coupled Differential-to-Single-
Ended Output Drive for Tx DAC
MAX19713
IDP
IDN
V
OUT
QDP
QDN
V
OUT
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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 轉(zhuǎn)換速率: 分辨率:8 bit 接口類型:SPI 電壓參考: 電源電壓-最大:3.6 V 電源電壓-最小:2 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體: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 轉(zhuǎn)換速率: 分辨率:8 bit 接口類型:SPI 電壓參考: 電源電壓-最大:3.6 V 電源電壓-最小:2 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-40
MAX19713ETN 功能描述:ADC / DAC多通道 RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率: 分辨率:8 bit 接口類型:SPI 電壓參考: 電源電壓-最大:3.6 V 電源電壓-最小:2 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-40
MAX19713ETN+ 功能描述:ADC / DAC多通道 45Msps CODEC/AFE Full Duplex RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率: 分辨率:8 bit 接口類型:SPI 電壓參考: 電源電壓-最大:3.6 V 電源電壓-最小:2 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-40
MAX19713ETN+GH7 功能描述:ADC / DAC多通道 10-Bit 45Msps Full-Duplex Analog Front-End RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率: 分辨率:8 bit 接口類型:SPI 電壓參考: 電源電壓-最大:3.6 V 電源電壓-最小:2 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-40
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