- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄225224 > SPT7935SCT (FAIRCHILD SEMICONDUCTOR CORP) 1-CH 12-BIT PROPRIETARY METHOD ADC, SERIAL ACCESS, PQFP44 PDF資料下載
參數(shù)資料
| 型號： | SPT7935SCT |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | ADC |
| 英文描述： | 1-CH 12-BIT PROPRIETARY METHOD ADC, SERIAL ACCESS, PQFP44 |
| 封裝： | TQFP-44 |
| 文件頁數(shù)： | 7/8頁 |
| 文件大小： | 77K |
| 代理商： | SPT7935SCT |
SPT
7
6/7/99
SPT7935
For optimal performance at high input frequencies, the clock
should have low jitter and fast edges. The rise/fall times
should be kept shorter than 2 ns. Overshoot and undershoot
should be avoided. Clock jitter causes the noise floor to rise
proportional to the input frequency. Because jitter can be
caused by crosstalk on the PC board, it is recommended that
the clock trace be kept as short as possible and standard
transmission line practices be followed.
DIGITAL OUTPUTS
The digital output data appears in an offset binary code at
3.3 V CMOS logic levels. A negative full scale input results in
an all zeros output code (000…0). A positive full scale input
results in an all 1’s code (111…1). The output data is available
7.5 clock cycles after the data is sampled. The input signal is
sampled on the high to low transition of the input clock. Output
data should be latched on the low to high clock transition as
shown in figure 1, the Timing Diagram. The output data is
invalid for the first 20 clock cycles after the device is powered up.
PACKAGE OUTLINE
44L TQFP
INCHES
MILLIMETERS
SYMBOL
MIN
MAX
MIN
MAX
A
0.472 Typ
12.00 Typ
B
0.394 Typ
10.00 Typ
C
0.394 Typ
10.00 Typ
D
0.472 Typ
12.00 Typ
E
0.031 Typ
0.80 Typ
F
0.012
0.018
0.300
0.45
G
0.053
0.057
1.35
1.45
H
0.002
0.006
0.05
0.15
I
0.018
0.030
0.450
0.750
J
0.039 Typ
1.00 Typ
K
0-7
°
0-7
°
Index
A
B
C
D
Pin 1
E
F
G
H
I
J
K
EVALUATION BOARD
The EB7935 Evaluation Board is available to aid designers in
demonstrating the full performance capability of the
SPT7935. The board includes an on-board clock driver,
adjustable voltage references, adjustable bias current cir-
cuits, single-to-differential input buffers with adjustable lev-
els, a single-to-differential transformer (1:1), digital output
buffers and 3.3/5 V adjustable logic outputs. An application
note (AN7935) is also available which describes the opera-
tion of the evaluation board and provides an example of the
recommended power and ground layout and signal routing.
Contact the factory for price and availability.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SPV14-156 | BRASS, TIN FINISH, TAB TERMINAL |
| SPWH22450 | MOBILE STATION ANTENNA |
| SPHS24136 | HELIX ANTENNA |
| SPX1117M3-2.85 | 2.85 V FIXED POSITIVE LDO REGULATOR, 1.3 V DROPOUT, PDSO3 |
| SPX2808M1-3.3 | 3.3 V FIXED POSITIVE LDO REGULATOR, 0.7 V DROPOUT, PSSO3 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SPT7935SCT_D | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| SPT7935SCTX | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| SPT7935SIT | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| SPT7935SITX | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| SPT7936 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:12-BIT, 28 MSPS SAMPLING A/D CONVERTER |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。