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ADS7821PB 参数 Datasheet PDF下载

ADS7821PB图片预览
型号: ADS7821PB
PDF下载: 下载PDF文件 查看货源
内容描述: 16位10ms的采样CMOS模拟数字转换器 [16-Bit 10ms Sampling CMOS ANALOG-to-DIGITAL CONVERTER]
分类和应用: 转换器模数转换器光电二极管
文件页数/大小: 10 页 / 282 K
品牌: BB [ BURR-BROWN CORPORATION ]
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SPECIFICATIONS  
ELECTRICAL  
TA = –25°C to +85°C, fS = 100kHz, VDIG = VANA = VD = +5V, using external reference, unless otherwise specified.  
ADS7821P, U  
ADS7821PB, UB  
TYP  
PARAMETER  
RESOLUTION  
CONDITIONS  
MIN  
TYP  
MAX  
MIN  
MAX  
UNITS  
16  
Bits  
ANALOG INPUT  
Voltage Range  
Impedance  
0 to +5  
10  
35  
V
kΩ  
pF  
Capacitance  
THROUGHPUT SPEED  
Conversion Cycle  
Acquire and Convert  
10  
µs  
Throughput Rate  
100  
15  
kHz  
DC ACCURACY  
Integral Linearity Error  
No Missing Codes  
Transition Noise(2)  
Full Scale Error(3,4)  
Full Scale Error Drift  
Full Scale Error(3,4)  
Full Scale Error Drift  
Offset Error  
±4  
±3  
LSB(1)  
Bits  
LSB  
%
ppm/°C  
%
ppm/°C  
mV  
ppm/°C  
LSB  
16  
0.9  
±2  
±7  
±2  
±0.5  
±0.5  
±8  
±0.25  
±0.25  
±4  
Internal Reference  
Internal Reference  
±5  
Offset Error Drift  
Power Supply Sensitivity  
(VDIG = VANA = VD)  
+4.75V < VD < +5.25V  
±12  
±8  
AC ACCURACY  
Spurious-Free Dynamic Range  
Total Harmonic Distortion  
Signal-to-(Noise+Distortion)  
fIN = 20kHz  
fIN = 20kHz  
90  
83  
83  
94  
86  
86  
dB(5)  
dB  
dB  
dB  
dB  
–90  
–94  
f
IN = 20kHz  
f
IN = –60dB Input  
28  
30  
Signal-to-Noise  
Full-Power Bandwidth(6)  
f
IN = 20kHz  
FS Step  
250  
kHz  
SAMPLING DYNAMICS  
Aperture Delay  
Transient Response  
Overvoltage Recovery(7)  
40  
ns  
µs  
ns  
2
150  
REFERENCE  
Internal Reference Voltage  
Internal Reference Source Current  
(Must use external buffer)  
Internal Reference Drift  
External Reference Voltage Range  
for Specified Linearity  
2.48  
2.3  
2.5  
1
2.52  
V
µA  
8
2.5  
ppm/°C  
V
2.7  
External Reference Current Drain  
Ext. 2.5000V Ref  
100  
µA  
DIGITAL INPUTS  
Logic Levels  
VIL  
VIH  
IIL  
–0.3  
+2.0  
+0.8  
VD +0.3V  
±10  
V
V
µA  
µA  
IIH  
±10  
DIGITAL OUTPUTS  
Data Format  
Data Coding  
VOL  
Parallel 16 bits  
Straight Binary  
+0.4  
ISINK = 1.6mA  
ISOURCE = 500µA  
High-Z State,  
V
V
µA  
VOH  
+4  
Leakage Current  
±5  
V
OUT = 0V to VDIG  
High-Z State  
Output Capacitance  
15  
pF  
DIGITAL TIMING  
Bus Access Time  
Bus Relinquish Time  
83  
83  
ns  
ns  
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN  
assumes no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject  
to change without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not  
authorize or warrant any BURR-BROWN product for use in life support devices and/or systems.  
®
ADS7821  
2