参数资料
| 型号： | KAD5512P-17Q72 |
| 厂商： | Intersil |
| 文件页数： | 11/36页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT 170MSPS 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： | 12 |
| 采样率（每秒）： | 170M |
| 数据接口： | 串行，SPI? |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 253mW |
| 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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KAD5512P
19
FN6807.4
October 1, 2010
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 less than 0.5mA
open-state leakage is recommended so the internal high
impedance pull-up to OVDD can assure exit from the reset
state. 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 KAD5512P 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
75MSPS will typically result in an SNR change of less than
0.5dBFS and an SFDR change of less than 3dBc.
SNR 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.
Analog Input
The ADC core contains a fully differential input
(VINP/VINN) to the sample and hold amplifier (SHA). The
ideal full-scale input voltage is 1.45V, centered at the
VCM voltage of 0.535V as shown in Figure 27.
Best performance is obtained when the analog inputs are
driven differentially. The common-mode output voltage,
VCM, should be used to properly bias the inputs as
give the best noise and distortion performance for
wideband and/or high intermediate frequency (IF)
inputs. Two different transformer input schemes are
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
S
NR
C
HANGE
(dB
fs
)
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
SFD
R
CHA
NGE
(
d
Bc
)
TEMPERATURE (°C)
CAL DONE AT
-40°C
CAL DONE AT
+25°C
CAL DONE AT
+85°C
FIGURE 27. ANALOG INPUT RANGE
1.0
1.8
0.6
0.2
1.4
INP
INN
VCM
0.535V
0.725V
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相关代理商/技术参数 |
参数描述 |
|---|---|
| KAD5512P-21Q48 | 功能描述:模数转换器 - ADC 12-BIT 210MSPS SINGL ADC PROG LVDS/LVCMOS RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| KAD5512P-21Q72 | 功能描述:模数转换器 - ADC 12-BIT 210MSPS SINGL ADC PROG LVDS/LVCMOS RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| KAD5512P-25Q48 | 功能描述:模数转换器 - ADC 12-BIT 250MSPS SINGL PROG LVDS/LVCMOS RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| KAD5512P-25Q72 | 功能描述:模数转换器 - ADC 12-BIT 250MSPS SINGL PROG LVDS/LVCMOS RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| KAD5512P-50 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:12-Bit, 500MSPS A/D Converter |
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