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參數(shù)資料
| 型號： | ADCS7478AIMFX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | ADC |
| 英文描述： | 1MSPS, 12-/10-/8-Bit A/D Converters in 6-Lead SOT-23 |
| 中文描述： | 1-CH 8-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO6 |
| 封裝： | SOT-23, 6 PIN |
| 文件頁數(shù)： | 9/22頁 |
| 文件大小： | 514K |
| 代理商： | ADCS7478AIMFX |
Timing Test Circuit
20057708
ADCS7476/ADCS7477/ADCS7478 Timing Specifications
The following specifications apply for V
= +2.7V to 5.25V, f
SCLK
= 20 MHz,
Boldface limits apply for T
A
= 40C to +85C
:
all other limits T
A
= 25C, unless otherwise noted. (Note 9)
Symbol
Parameter
Conditions
t
CONVERT
t
QUIET
(Note 5)
t
1
Minimum CS Pulse Width
t
2
CS to SCLK Setup Time
Delay from CS Until SDATA
TRI-STATE
Disabled (Note 6)
Data Access Time after SCLK Falling
Edge(Note 7)
V
DD
= +4.75 to +5.25
Typical
16 x t
SCLK
Limits
Units
50
10
10
ns (min)
ns (min)
ns (min)
t
3
20
ns (max)
t
4
V
DD
= +2.7 to +3.6
40
20
ns (max)
ns (max)
t
5
SCLK Low Pulse Width
0.4 x
t
SCLK
0.4 x
t
SCLK
7
5
25
6
25
5
ns (min)
t
6
SCLK High Pulse Width
ns (min)
t
7
SCLK to Data Valid Hold Time
V
DD
= +2.7 to +3.6
V
DD
= +4.75 to +5.25
ns (min)
ns (min)
ns (max)
ns (min)
ns (max)
ns (min)
t
8
SCLK Falling Edge to SDATA High
Impedance (Note 8)
V
DD
= +2.7 to +3.6
V
DD
= +4.75 to +5.25
t
POWER-UP
Power-Up Time from Full
Power-Down
1
μs
Note 5:
Minimum Quiet Time Required Between Bus Relinquish and Start of Next Conversion
Note 6:
Measured with the load circuit shown above, and defined as the time taken by the output to cross 1.0V.
Note 7:
Measured with the load circuit shown above, and defined as the time taken by the output to cross 1.0V or 2.0V.
Note 8:
t
8
is derived from the time taken by the outputs to change by 0.5V with the loading circuit shown above. The measured number is then adjusted to remove
the effects of charging or discharging the 25pF capacitor. This means t
8
is the true bus relinquish time, independent of the bus loading.
Note 9:
All input signals are specified as t
r
= t
f
= 5 ns (10% to 90% V
DD
) and timed from 1.6V.
A
www.national.com
9
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相關代理商/技術參數(shù) |
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|---|---|
| ADCS7478AIMFX/NOPB | 功能描述:模數(shù)轉換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構:Sigma-Delta 轉換速率: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 |
| ADCS7478AISDX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:1MSPS, 12-/10-/8-Bit A/D Converters in SOT-23 & LLP |
| ADCS9888 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:205/170/140 MSPS Video Analog Front End |
| ADCS9888_05 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:205/170/140 MSPS Video Analog Front End |
| ADCS9888C WAF | 制造商:Texas Instruments 功能描述: |
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