- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄378284 > ADC1251CMJ (NATIONAL SEMICONDUCTOR CORP) Self-Calibrating 12-Bit Plus Sign A/D Converter with Sample-and-Hold PDF資料下載
參數(shù)資料
| 型號： | ADC1251CMJ |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | ADC |
| 英文描述： | Self-Calibrating 12-Bit Plus Sign A/D Converter with Sample-and-Hold |
| 中文描述： | 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, CDIP24 |
| 封裝： | CERAMIC, DIP-24 |
| 文件頁數(shù)： | 5/16頁 |
| 文件大小： | 301K |
| 代理商： | ADC1251CMJ |
Electrical Characteristics
(Continued)
Note 6:
Two on-chip diodes are tied to the analog input as shown below. Errors in the A/D conversion can occur if these diodes are forward biased more than
50 mV. This means that if AV
CC
and DV
CC
are minimum (4.75 V
DC
) and V
is maximum (
b
4.75 V
DC
), the analog input full-scale voltage must be
s g
4.8 V
DC
.
TL/H/11024–4
Note 7:
A diode exists between AV
CC
and DV
CC
as shown below.
TL/H/11024–5
To guarantee accuracy, it is required that the AV
CC
and DV
CC
be connected together to a power supply with separate bypass filters at each V
CC
pin.
Note
8:
Accuracy is guaranteed at f
CLK
e
3.5 MHz. At higher or lower clock frequencies accuracy may degrade. See the Typical Performance Characteristics
curves.
9:
Typicals are at T
J
e
25
§
C and represent most likely parametric norm.
Note 10:
Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Note
Note 11:
Positive linearity error is defined as the deviation of the analog value, expressed in LSBs, from the straight line that passes through positive full scale and
zero. For negative linearity error the straight line passes through negative full scale and zero. (See Figures 1b and 1c).
Note 12:
The ADC1251’s self-calibration technique ensures linearity, full scale, and offset errors as specified, but noise inherent in the self-calibration process will
result in a repeatability uncertainty of
g
0.20 LSB.
Note 13:
If T
A
changes then an Auto-Zero or Auto-Cal cycle will have to be re-started. See the typical performance characteristic curves.
Note 14:
After an Auto-Zero or Auto-Cal cycle at the specified power supply extremes.
Note 15:
When using the WR control to start a conversion if the clock is asynchronous to the rising edge of WR an uncertainty of one clock period will exist in the
end of the interval t
A
, therefore making t
A
end a minimum 6 clock periods or a maximum 7 clock periods after the rising edge of WR. If the falling edge of the clock
is synchronous to the rising edge of WR then t
A
will end exactly 6.5 clock periods after the rising edge of WR. This does not occur when S/H control is used.
Note 16:
The CAL line must be high before a conversion is started.
Note 17:
The specifications for these parameters are valid after an Auto-Cal cycle has been completed.
Note 18:
The ADC1251 reference ladder is composed solely of capacitors.
Note 19:
A Military RETS Electrical Test Specification is available on request. At time of printing the ADC1251CMJ/883 RETS specification complies fully with the
boldface
limits in this column.
TL/H/11024–6
FIGURE 1a. Transfer Characteristic
5
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADC1251 | Self-Calibrating 12-Bit Plus Sign A/D Converter with Sample-and-Hold |
| ADC1251CIJ | Self-Calibrating 12-Bit Plus Sign A/D Converter with Sample-and-Hold |
| ADC12662CIVF | 12-Bit, 1.5 MHz, 200 mW A/D Converter with Input Multiplexer and Sample/Hold |
| ADC12662 | 12-Bit, 1.5 MHz, 200 mW A/D Converter with Input Multiplexer and Sample/Hold |
| ADC12662CIV | 12-Bit, 1.5 MHz, 200 mW A/D Converter with Input Multiplexer and Sample/Hold |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADC1251CMJ/883 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Self-Calibrating 12-Bit Plus Sign A/D Converter with Sample-and-Hold |
| ADC1255X | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:ADC1255X 10-Bit 250KSPS SAR ADC|Data Sheet |
| ADC1256X | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:ADC1256X 12-Bit 20MSPS ADC|Data Sheet |
| ADC126 | 制造商:MPSIND 制造商全稱:MPS Industries, Inc. 功能描述:1W, Miniature SIP, Single & Dual Output DC/DC Converters |
| ADC12662 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:12-Bit, 1.5 MHz, 200 mW A/D Converter with Input Multiplexer and Sample/Hold |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。