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参数资料
| 型号： | LTC2203C#TRPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | ADC |
| 英文描述： | 1-CH 16-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQCC48 |
| 封装： | 7 X 7 MM, LEAD FREE, PLASTIC, MO-220-WKKD-2, QFN-48 |
| 文件页数： | 16/26页 |
| 文件大小： | 1118K |
| 代理商： | LTC2203C#TRPBF |
LTC2203/LTC2202
23
22032p
internal dither mode can be enabled to randomize the
input’s location on the ADC transfer curve, resulting in
improved SFDR for low signal levels.
As shown in Figure 12, the output of the sample-and-hold
amplier is summed with the output of a dither DAC. The
dither DAC is driven by a long sequence pseudo-random
number generator; the random number fed to the dither
DAC is also subtracted from the ADC result. If the dither
DAC is precisely calibrated to the ADC, very little of the
dither signal will be seen at the output. The dither signal
thatdoesleakthroughwillappearaswhitenoise.Thedither
DAC is calibrated to result in less than 0.5dB elevation in
the noise oor of the ADC, as compared to the noise oor
with dither off.
APPLICATIO S I FOR ATIO
W
U
to the same power supply as for the logic being driven.
For example, if the converter is driving a DSP powered
by a 1.8V supply, then OVDD should be tied to that same
1.8V supply. In CMOS mode OVDD can be powered with
any logic voltage up to 3.6V. OGND can be powered with
any voltage from ground up to 1V and must be less than
OVDD. The logic outputs will swing between OGND and
OVDD.
Internal Dither
The LTC2203/LTC2202 are 16-bit ADCs with very linear
transfer functions; however, at low input levels even
slight imperfections in the transfer function will result in
unwanted tones. Small errors in the transfer function are
usually a result of ADC element mismatches. An optional
CLKOUT
OF
D15/D0
D14/D0
D2/D0
D1/D0
D0
D1
RAND = HIGH,
SCRAMBLE
ENABLED
D2
D14
D15
OF
CLKOUT
RAND
22032 F11
LTC2203/02
Figure 10. Functional Equivalent of Digital Output Randomizer
Figure 11. Descrambling a Scrambled Digital Output
D1
D0
D2
D14
D15
LTC2203/02
PC BOARD
FPGA
CLKOUT
OF
D15/D0
D14/D0
D2/D0
D1/D0
D0
22032 F12
相关PDF资料 |
PDF描述 |
|---|---|
| LTC2203C#TR | 1-CH 16-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQCC48 |
| LTC2203C | 1-CH 16-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQCC48 |
| LTC2203I#TRPBF | 1-CH 16-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQCC48 |
| LTC2203I#TR | 1-CH 16-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQCC48 |
| LTC2202C#PBF | 1-CH 16-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQCC48 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC2203CUK | 制造商:Linear Technology 功能描述:ADC Single Pipelined 25Msps 16-bit Parallel 48-Pin QFN EP |
| LTC2203CUK#PBF | 制造商:Linear Technology 功能描述:ADC Single Pipelined 25Msps 16-bit Parallel 48-Pin QFN EP 制造商:Linear Technology 功能描述:Single ADC Pipelined 25Msps 16-bit Parallel 48-Pin QFN EP 制造商:Linear Technology 功能描述:IC ADC 16-BIT 25MSPS 48-QFN 制造商:Linear Technology 功能描述:IC, ADC, 16BIT, 25MSPS, QFN-48, Resolution (Bits):16bit, Sampling Rate:25MSPS, Supply Voltage Type:Single, Supply Voltage Min:3.135V, Supply Voltage Max:3.465V, Supply Current:66mA, Digital IC Case Style:QFN, No. of Pins:48 , RoHS Compliant: Yes 制造商:Linear Technology 功能描述:MS-ADC/High Speed, 16-bit, 25Msps ADC |
| LTC2203CUK#TRPBF | 制造商:Linear Technology 功能描述:ADC Single Pipelined 25Msps 16-bit Parallel 48-Pin QFN EP T/R 制造商:Linear Technology 功能描述:IC ADC 16-BIT 25MSPS 48-QFN |
| LTC2203IUK | 制造商:Linear Technology 功能描述:Single ADC Pipelined 25Msps 16-bit Parallel 48-Pin QFN EP |
| LTC2203IUK#PBF | 制造商:Linear Technology 功能描述:ADC Single Pipelined 25Msps 16-bit Parallel 48-Pin QFN EP 制造商:Linear Technology 功能描述:Single ADC Pipelined 25Msps 16-bit Parallel 48-Pin QFN EP 制造商:Linear Technology 功能描述:IC ADC 16-BIT 25MSPS 48-QFN 制造商:Linear Technology 功能描述:IC ADC 16BIT 25MSPS QFN-48 制造商:Linear Technology 功能描述:IC, ADC, 16BIT, 25MSPS, QFN-48, Resolution (Bits):16bit, Sampling Rate:25MSPS, Supply Voltage Type:Single, Supply Voltage Min:3.135V, Supply Voltage Max:3.465V, Supply Current:66mA, Digital IC Case Style:QFN, No. of Pins:48 , RoHS Compliant: Yes 制造商:Linear Technology 功能描述:MS-ADC/High Speed, 16-bit, 25Msps ADC |
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