参数资料
| 型号： | KAD5514P-12Q72 |
| 厂商： | Intersil |
| 文件页数： | 10/34页 |
| 文件大小： | 0K |
| 描述： | IC ADC 14BIT 125MSPS SGL 72-QFN |
| 产品培训模块： | High-Speed Analog-to-Digital Converters |
| 标准包装： | 1 |
| 系列： | FemtoCharge™ |
| 位数： | 14 |
| 采样率（每秒）： | 125M |
| 数据接口： | 串行，SPI? |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 376mW |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 72-VFQFN 裸露焊盘 |
| 供应商设备封装： | 72-QFN（10x10） |
| 包装： | 托盘 |
| 输入数目和类型： | 1 个差分，单极 |
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18
FN6804.2
September 10, 2009
The calibration sequence is initiated on the rising edge of
RESETN, as shown in Figure 24. The over-range output
(OR) is set high once RESETN is pulled low, and remains in
that state until calibration is complete. The OR output returns
to normal operation at that time, so it is important that the
analog input be within the converter’s full-scale range to
observe the transition. If the input is in an over-range
condition the OR pin will stay high, and it will not be possible
to detect the end of the calibration cycle.
While RESETN is low, the output clock
(CLKOUTP/CLKOUTN) is set low. Normal operation of the
output clock resumes at the next input clock edge
(CLKP/CLKN) after RESETN is deasserted. At 250MSPS
the nominal calibration time is 200ms, while the maximum
calibration time is 550ms.
User-Initiated Reset
Recalibration of the ADC can be initiated at any time by
driving the RESETN pin low for a minimum of one clock
cycle. An open-drain driver with a drive strength of less than
0.5mA is recommended, RESETN has an internal high
impedance pull-up to OVDD. As is the case during power-on
reset, the SDO, RESETN and DNC pins must be in the
proper state for the calibration to successfully execute.
The performance of the KAD5514P changes with variations
in temperature, supply voltage or sample rate. The extent of
these changes may necessitate recalibration, depending on
system performance requirements. Best performance will be
achieved by recalibrating the ADC under the environmental
conditions at which it will operate.
A supply voltage variation of less than 100mV will generally
result in an SNR change of less than 0.5dBFS and SFDR
change of less than 3dBc. In situations where the sample
rate is not constant, best results will be obtained if the device
is calibrated at the highest sample rate. Reducing the
sample rate by less than 80MSPS will typically result in an
SNR change of less than 0.5dBFS and an SFDR change of
less than 3dBc.
and SFDR performance with calibration performed at -
40°C,+25°C, and +85°C. Each plot shows the variation of
SNR/SFDR across temperature after a single calibration at
-40°C, +25°C and +85°C. Best performance is typically
achieved by a user-initiated calibration at the operating
conditions, as stated earlier. However, it can be seen that
performance drift with temperature is not a very strong
function of the temperature at which the calibration is
performed. Full-rated performance will be achieved after
power-up calibration regardless of the operating conditions.
FIGURE 24. CALIBRATION TIMING
CLKP
CLKN
CLKOUTP
RESETN
ORP
CALIBRATION
BEGINS
CALIBRATION
COMPLETE
CALIBRATION
TIME
FIGURE 25. SNR PERFORMANCE vs TEMPERATURE
-4
-3
-2
-1
0
1
2
3
-40
-15
10
35
60
85
SNR
CHANGE
(
d
Bf
s)
CAL DONE AT
+85°C
TEMPERATURE (°C)
CAL DONE AT
-40°C
CAL DONE AT
+25°C
FIGURE 26. SFDR PERFORMANCE vs TEMPERATURE
-15
-10
-5
0
5
10
15
-40
-15
10
35
60
85
SFDR
CH
ANGE
(dBc)
TEMPERATURE (°C)
CAL DONE AT
-40°C
CAL DONE AT
+25°C
CAL DONE AT
+85°C
KAD5514P
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相关代理商/技术参数 |
参数描述 |
|---|---|
| KAD5514P-17Q48 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:14-Bit, 250/210/170/125MSPS ADC |
| KAD5514P-17Q72 | 制造商:Intersil Corporation 功能描述:14-BIT, 170MSPS SINGLE-CHANNEL ADC, PROGRAMMABLE LVDS/LVCMOS - Rail/Tube 制造商:Intersil Corporation 功能描述:IC ADC 14BIT 170MSPS SGL 72-QFN |
| KAD5514P-21Q48 | 制造商:Intersil Corporation 功能描述:14-BIT, 210MSPS SINGLE-CHANNEL ADC, PROGRAMMABLE LVDS/LVCMOS - Rail/Tube 制造商:Intersil Corporation 功能描述:IC ADC 14BIT 210MSPS SGL 48-QFN |
| KAD5514P-21Q72 | 制造商:Intersil Corporation 功能描述:14-BIT, 210MSPS SINGLE-CHANNEL ADC, PROGRAMMABLE LVDS/LVCMOS - Rail/Tube 制造商:Intersil Corporation 功能描述:IC ADC 14BIT 210MSPS SGL 72-QFN |
| KAD5514P-25Q48 | 制造商:Intersil Corporation 功能描述:14-BIT, 250MSPS SINGLE-CHANNEL ADC, PROGRAMMABLE LVDS/LVCMOS - Rail/Tube 制造商:Intersil Corporation 功能描述:IC ADC 14BIT 250MSPS SGL 48-QFN 制造商:Intersil Corporation 功能描述:IC, ADC, 14BIT, Resolution (Bits):14bit, Sampling Rate:250MSPS, Supply Voltage T 制造商:Intersil Corporation 功能描述:IC, ADC, 14BIT, Resolution (Bits):14bit, Sampling Rate:250MSPS, Supply Voltage Type:Single, Supply Voltage Min:1.7V, Supply Voltage Max:1.9V, Supply Current:170mA, Digital IC Case Style:QFN, No. of Pins:48, Data Interface:SPI, MSL:- , RoHS Compliant: Yes |
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