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參數(shù)資料
| 型號(hào)： | SPT7734SCS |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | ADC |
| 英文描述： | 8-BIT, 40 MSPS,175 mW A/D CONVERTER |
| 中文描述： | 1-CH 8-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO28 |
| 封裝： | SOIC-28 |
| 文件頁數(shù)： | 7/9頁 |
| 文件大?。?/td> | 86K |
| 代理商： | SPT7734SCS |
7
1/27/98
SPT7734
DIGITAL OUTPUTS
The digital outputs (D0-D8) are driven by a separate supply
(OV
DD
) ranging from +3 V to +5 V. This feature makes it
possible to drive the SPT7734's TTL/CMOS-compatible out-
puts with the user's logic system supply. The format of the
output data (D0-D7) is straight binary. (See table III.) The
outputs are latched on the rising edge of CLK. These outputs
can be switched into a tri-state mode by bringing
EN
high.
Table III - Output Data Information
ANALOG INPUT
OVERRANGE
D8
1
OUTPUT CODE
D7-D0
1111 1111
+F.S. + 1/2 LSB
+F.S. -1/2 LSB
O
1111 111
+1/2 F.S.
O
+1/2 LSB
O
OOOO OOO
0.0 V
O
OOOO OOOO
( indicates the flickering bit between logic 0 and 1).
DO NOT CONNECT PINS (DNC)
There are two pins designated as Do Not Connect (DNC).
These pins must be left floating for proper operation of the
device.
OVERRANGE OUTPUT
The OVERRANGE OUTPUT (D8) is an indication that the
analog input signal has exceeded the positive full scale input
voltage by 1 LSB. When this condition occurs, D8 will switch
to logic 1. All other data outputs (D0 to D7) will remain at
logic 1 as long as D8 remains at logic 1. This feature makes
it possible to include the SPT7734 into higher resolution
systems.
Figure 4 - Recommended Input Protection Circuit
47
D1
D2
ADC
Buffer
AV
DD
+V
-V
D1 = D2 = Hewlett Packard HP5712 or equivalent
Figure 5 - On-Chip Protection Circuit
V
DD
Analog
Pad
120
120
CLOCK INPUT
The SPT7734 is driven from a single-ended TTL-input clock.
Because the pipelined architecture operates on the rising edge of
the clock input, the device can operate over a wide range of input
clock duty cycles without degrading the dynamic performance.
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| SPT7734SCS_Q | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 8BIT 40 MSPS SaR 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 |
| SPT7734SCT | 功能描述:視頻模擬/數(shù)字化轉(zhuǎn)換器集成電路 8BIT 40 MSPS SaR aDC RoHS:否 制造商:Texas Instruments 輸入信號(hào)類型:Differential 轉(zhuǎn)換器數(shù)量:1 ADC 輸入端數(shù)量:4 轉(zhuǎn)換速率:3 Gbps 分辨率:8 bit 結(jié)構(gòu): 輸入電壓:3.3 V 接口類型:SPI 信噪比: 電壓參考: 電源電壓-最大:3.45 V 電源電壓-最小:3.15 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:TCSP-48 封裝:Reel |
| SPT7734SCT_Q | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 8BIT 40 MSPS SaR 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 |
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| SPT774BCJ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:FAST, COMPLETE 12-BIT UP COMPATIBLE A/D CONVERTER WITH SAMPLE/HOLD |
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