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參數(shù)資料
| 型號(hào)： | ADC78H89EVAL |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 7-Channel, 500 KSPS, 12-Bit A/D Converter |
| 中文描述： | 7通道，500 kSPS的，12位A / D轉(zhuǎn)換器 |
| 文件頁(yè)數(shù)： | 5/16頁(yè) |
| 文件大?。?/td> | 828K |
| 代理商： | ADC78H89EVAL |
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ADC78H89 Timing Specifications
The following specifications apply for AV
= DV
DD
= +2.7V to 5.25V, f
SCLK
= 8 MHz, C
L
= 50 pF,
Boldface limits apply for
T
A
= T
MIN
to T
MAX
: all other limits T
A
= 25C.
Symbol
Parameter
Conditions
t
1a
SCLK High to CS Fall Setup Time
(Note 10)
t
1b
SCLK Low to CS Fall Hold Time
(Note 10)
Delay from CS Until DOUT
TRI-STATE
Disabled
Data Access Time after SCLK
Falling Edge
Data Setup Time Prior to SCLK
Rising Edge
t
5
Data Valid SCLK Hold Time
Typical
Limits
10
10
Units
ns (min)
ns (min)
t
2
30
ns (max)
t
3
30
ns (max)
t
4
10
ns (max)
10
ns (max)
t
6
SCLK High Pulse Width
0.4 x
t
SCLK
0.4 x
t
SCLK
ns (min)
t
7
SCLK Low Pulse Width
ns (min)
t
8
CS Rising Edge to DOUT
High-Impedance
20
ns (max)
Note 1:
Absolute maximum ratings are limiting values which indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions
for which the device is functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical
Characteristics. The guaranteed specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not
operated under the listed test conditions.
Note 2:
All voltages are measured with respect to GND = 0V, unless otherwise specified.
Note 3:
When the input voltage at any pin exceeds the power supplies (that is, V
<
AGND or V
>
V
or V
), the current at that pin should be limited to 10 mA.
The 50 mA maximum package input current rating limits the number of pins that can safely exceed the power supplies with an input current of 10 mA to five.
Note 4:
The absolute maximum junction temperature (T
max) for this device is 150C. The maximum allowable power dissipation is dictated by T
max, the
junction-to-ambient thermal resistance (
θ
), and the ambient temperature (T
), and can be calculated using the formula P
MAX = (T
max T
)/
θ
. The values
for maximum power dissipation listed above will be reached only when the ADC78H89 is operated in a severe fault condition (e.g. when input or output pins are
driven beyond the power supply voltages, or the power supply polarity is reversed). Obviously, such conditions should always be avoided.
Note 5:
Human body model is 100 pF capacitor discharged through a 1.5 k
resistor. Machine model is 220 pF discharged through ZERO ohms.
Note 6:
See AN450, “Surface Mounting Methods and Their Effect on Product Reliability”, or the section entitled “Surface Mount” found in any post 1986 National
Semiconductor Linear Data Book, for other methods of soldering surface mount devices.
Note 7:
Tested limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Note 8:
Data sheet min/max specification limits are guaranteed by design, test, or statistical analysis.
Note 9:
Except power supply pins.
Note 10:
Clock may be in any state (high or low) when CS is asserted, with the restrictions on setup and hold time given by t
1a
and t
1b
.
A
www.national.com
5
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|---|---|
| ADC78H89 | 7 CHANNEL 500KSPS, 12 BIT A/D CONVERTER |
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| ADC78H89CIMTX | 7 CHANNEL 500KSPS, 12 BIT A/D CONVERTER |
| ADC78H90 | 8-Channel, 500 kSPS, 12-Bit A/D Converter |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADC78H90 | 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:8-Channel, 500 kSPS, 12-Bit A/D Converter |
| ADC78H90CIMT | 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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 |
| ADC78H90CIMT | 制造商:Texas Instruments 功能描述:12BIT ADC 500KSPS POWERWISE TSSOP16 |
| ADC78H90CIMT/NOPB | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 8CH,500KSPS,12B 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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 |
| ADC78H90CIMTX | 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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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