參數(shù)資料
型號(hào)： MAX19713ETN
廠(chǎng)商： MAXIM INTEGRATED PRODUCTS INC
元件分類(lèi)： 通信及網(wǎng)絡(luò)
英文描述： 10-Bit, 45Msps, Full-Duplex Analog Front-End
中文描述： SPECIALTY TELECOM CIRCUIT, QCC56
封裝： 7 X 7 MM, 0.80 MM HEIGHT, MO-220, TQFN-56
文件頁(yè)數(shù)： 29/37頁(yè)
文件大?。?/td> 892K
代理商： MAX19713ETN
M
DIN can be written independent of DOUT state. A 16-bit
instruction at DIN updates the device configuration. To
prevent modifying internal registers while reading data
from DOUT, hold DIN at a high state (only applies if
sequential aux-ADC conversions are not executed).
This effectively writes all ones into address 1111. Since
address 1111 does not exist, no internal registers are
affected.
Reference Configurations
The MAX19713 features an internal precision 1.024V-
bandgap reference that is stable over the entire power-
supply and temperature ranges. The REFIN input
provides two modes of reference operation. The volt-
age at REFIN (V
REFIN
) sets the reference operation
mode (Table 18).
In internal reference mode, connect REFIN to V
DD
.
V
REF
is an internally generated 0.512V ±4% reference
level. COM, REFP, and REFN are low-impedance out-
puts with V
COM
= V
DD
/ 2, V
REFP
= V
DD
/ 2 + V
REF
/ 2,
and V
REFN
= V
DD
/ 2 - V
REF
/ 2. Bypass REFP, REFN,
and COM each with a 0.33μF capacitor. Bypass REFIN
to GND with a 0.1μF capacitor.
In buffered external reference mode, apply 1.024V
±10% at REFIN. In this mode, COM, REFP, and REFN
are low-impedance outputs with V
COM
= V
DD
/ 2,
V
REFP
= V
DD
/ 2 + V
REFIN
/ 4, and V
REFN
= V
DD
/ 2 -
V
REFIN
/ 4. Bypass REFP, REFN, and COM each with a
0.33μF capacitor. Bypass REFIN to GND with a 0.1μF
capacitor. In this mode, the Tx DAC full-scale output is
proportional to the external reference. For example, if
the V
REFIN
is increased by 10% (max), the Tx DAC full-
scale output is also increased by 10% or ±440mV.
Applications Information
Using Balun Transformer AC-Coupling
An RF transformer (Figure 9) provides an excellent
solution to convert a single-ended signal source to a
fully differential signal for optimum ADC performance.
Connecting the center tap of the transformer to COM
provides a V
DD
/ 2 DC level shift to the input. A 1:1
transformer can be used, or a step-up transformer can
be selected to reduce the drive requirements. In gener-
al, the MAX19713 provides better SFDR and THD with
fully differential input signals than single-ended signals,
especially for high input frequencies. In differential
mode, even-order harmonics are lower as both inputs
(IAP, IAN, QAP, QAN) are balanced, and each of the
10-Bit, 45Msps, Full-Duplex
Analog Front-End
______________________________________________________________________________________
29
Figure 9. Balun Transformer-Coupled Single-Ended-to-
Differential Input Drive for Rx ADC
COM
IAP
IAN
25
Ω
0.1
μ
F
0.33
μ
F
25
Ω
0.1
μ
F
V
IN
MAX19713
22pF
22pF
QAP
QAN
25
Ω
0.1
μ
F
0.33
μ
F
25
Ω
0.1
μ
F
V
IN
22pF
22pF
Table 18. Reference Modes
V
REFIN
REFERENCE MODE
> 0.8V x V
DD
Internal Reference Mode. V
REF
is internally generated to be 0.512V. Bypass REFP, REFN, and COM each
with a 0.33μF capacitor.
1.024V ±10%
Buffered External Reference Mode. An external 1.024V ±10% reference voltage is applied to REFIN. V
REF
is
internally generated to be V
REFIN
/ 2. Bypass REFP, REFN, and COM each with a 0.33μF capacitor. Bypass
REFIN to GND with a 0.1μF capacitor.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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(lèi)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(lèi)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+T 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(lèi)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+TGH7 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(lèi)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-T 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(lèi)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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