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參數(shù)資料
| 型號： | XRD64L42 |
| 廠商： | Exar Corporation |
| 英文描述： | Dual 10-Bit 40MSPS CMOS ADC |
| 中文描述： | 雙10位40MSPS的CMOS模數(shù)轉(zhuǎn)換器 |
| 文件頁數(shù)： | 11/16頁 |
| 文件大?。?/td> | 212K |
| 代理商： | XRD64L42 |
XRD64L42
11
Rev. P2.10
Differential Inputs
The XRD64L42 can be used in either differential or
single-ended input mode. For single-ended inputs, see
the Single-Ended Inputs Section. Differential inputs
reduce system noise by removing noise components
common at both input pins. Figure 4. is a simplified
diagram that is used as a common test circuit with our
XRD64L42/64L44EVAL application board. This circuit
is used to evaluate the dynamic performance of the
XRD64L42 using differential inputs. Pin 15, DIFF
should be held high to select differential inputs.
Input A
Input B
VINA(+)
VCMO
VINA(-)
VINB(+)
VINB(-)
50
50
22
22
22
22
Transformer
Transformer
Figure 5. Common Test Circuit for the
Differential Input Mode
SYNCO, Data Valid Delay and Latency
SYNCO is an output pin provided by the XRD64L42.
Valid data is available on the rising edge of SYNCO,
see Figure 6. The Latency for the XRD64L42 is 17
clock cycles.
Figure 6. SYNCO, Data Valid Delay and Latency
for the XRD64L42
Auto-Calibration
The XRD64L42 incorporates an auto-calibration circuit
which continuously adjusts and matches the offset and
linearity of each ADC. This auto-calibration circuit is
transparent to the user after the initial 3.4ms calibration
(168,000 initial clock cycles).
Note:
To avoid auto-calibration after power down, do not
disable CKIN. CKIN can be slowed down signifi-
cantly to save power without losing calibration.
CKIN
SYNCO
Valid Data
N
N-16
N-17
N-15
N+1
N+2
t
den
=20ns
t
synco
=2ns (typical)
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| XRD64L42AIV | Dual 10-Bit 40MSPS CMOS ADC |
| XRD64L43 | Dual 10-Bit 40MSPS CMOS ADC |
| XRD64L43AIV | Dual 10-Bit 40MSPS CMOS ADC |
| XRD64L44AIV | Dual 10-Bit 50MSPS CMOS ADC |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XRD64L42AIV | 制造商:EXAR 制造商全稱:EXAR 功能描述:Dual 10-Bit 40MSPS CMOS ADC |
| XRD64L43 | 制造商:EXAR 制造商全稱:EXAR 功能描述:Dual 10-Bit 40MSPS CMOS ADC |
| XRD64L43AIV | 制造商:Exar Corporation 功能描述:ADC Dual SAR 40Msps 10-bit Parallel 64-Pin LQFP |
| XRD64L43AIV-F | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10 Bit40 MSPSADC 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| XRD64L43AIVTR-F | 制造商:Exar Corporation 功能描述:ADC Dual SAR 40Msps 10-bit Parallel 64-Pin LQFP T/R 制造商:Exar Corporation 功能描述:XRD64L43AIVTR-F |
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