參數(shù)資料
型號(hào)： MAX19505EVKIT+
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 5/35頁(yè)
文件大?。?/td> 0K
描述： KIT EVALUATION FOR MAX1950 ADC
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 1
ADC 的數(shù)量： 2
位數(shù)： 8
采樣率（每秒）： 65M
數(shù)據(jù)接口： 串行，并聯(lián)
輸入范圍： 0.4 ~ 1.4 V
在以下條件下的電源（標(biāo)準(zhǔn)）： 43mW @ 65MSPS，1.8V
工作溫度： -40°C ~ 85°C
已用 IC / 零件： MAX19505
已供物品： 板，軟件
MAX19505
Dual-Channel, 8-Bit, 65Msps ADC
______________________________________________________________________________________
13
Detailed Description
The MAX19505 uses a 10-stage, fully differential,
pipelined architecture (Figure 1) that allows for high-
speed conversion while minimizing power consump-
tion. Samples taken at the inputs move progressively
through the pipeline stages every half clock cycle.
From input to output, the total latency is 9 clock cycles.
Each pipeline converter stage converts its input voltage
to a digital output code. At every stage, except the last,
the error between the input voltage and the digital out-
put code is multiplied and passed on to the next
pipeline stage. Digital error correction compensates for
ADC comparator offsets in each pipeline stage and
ensures no missing codes. Figure 2 shows the
MAX19505 functional diagram.
Analog Inputs
and Common-Mode Reference
Apply the analog input signal to the analog inputs
(INA+/INA- or INB+/INB-), which are connected to the
input sampling switch (Figure 3). When the input sam-
pling switch is closed, the input signal is applied to the
sampling capacitors through the input switch resistance.
The input signal is sampled at the instant the input
switch opens. The pipeline ADC processes the sampled
voltage and the digital output result is available 9 clock
cycles later. Before the input switch is closed to begin
the next sampling cycle, the sampling capacitors are
reset to the input common-mode potential.
Common-mode bias can be provided externally or
internally through 2k
resistors. In DC-coupled applica-
tions, the signal source provides the external bias and
the bias current. In AC-coupled applications, the input
current is supplied by the common-mode input voltage.
For example, the input current can be supplied through
the center tap of a transformer secondary winding.
Alternatively, program the appropriate internal register
through the serial-port interface to supply the input DC
current through internal 2k
resistors (Figure 3). When
the input current is supplied through the internal resis-
tors, the input common-mode potential is reduced by
the voltage drop across the resistors. The common-
mode input reference voltage can be adjusted through
programmable register settings from 0.45V to 1.35V in
0.15V increments. The default setting is 0.90V. Use this
feature to provide a common-mode output reference to
a DC-coupled driving circuit.
Pin Description (continued)
PIN
NAME
FUNCTION
40
D5A
Channel A Three-State Digital Output, Bit 5
41
D6A
Channel A Three-State Digital Output, Bit 6
42
D7A
Channel A Three-State Digital Output, Bit 7 (MSB)
43
DORA
Channel A Data Over Range
44
DCLKA
Channel A Data Clock
45
SDIN/FORMAT
SPI Data Input/Format. Serial-data input when
SPEN is low. Output data format when SPEN is high.
46
SCLK/DIV
Serial Clock/Clock Divider. Serial clock when
SPEN is low. Clock divider when SPEN is high.
47
CS/OUTSEL
Serial-Port Select/Data Output Mode. Serial-port select when
SPEN is low. Data output mode
selection when
SPEN is high.
—EP
Exposed Pad. Internally connected to GND. Connect to a large ground plane to maximize thermal
performance.
MAX19505
Σ
+
DIGITAL ERROR CORRECTION
FLASH
ADC
x2
DAC
STAGE 2
IN_+
IN_-
STAGE 1
STAGE 9
STAGE 10
END OF PIPELINE
D0_ THROUGH D7_
Figure 1. Pipeline Architecture—Stage Blocks
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX19505EVKIT+ 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開(kāi)發(fā)工具 MAX19505-07/15-17 Eval Kit RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評(píng)估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V
MAX19506ETM+ 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 8-Bit 2Ch 100Msps 1.8V Precision ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX19506ETM+T 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 8-Bit 2Ch 100Msps 1.8V Precision ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX19506EVKIT+ 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開(kāi)發(fā)工具 MAX19505-07/15-17 Eval Kit RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評(píng)估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V
MAX19507ETM+ 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 8-Bit 2Ch 130Msps 1.8V Precision ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
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