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參數(shù)資料
| 型號(hào)： | MC1408P8 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | DAC |
| 英文描述： | 8-Bit D/A Converter |
| 中文描述： | PARALLEL, 8 BITS INPUT LOADING, 0.15 us SETTLING TIME, 8-BIT DAC, PDIP16 |
| 封裝： | DIP-16 |
| 文件頁數(shù)： | 9/12頁 |
| 文件大?。?/td> | 321K |
| 代理商： | MC1408P8 |
Test Circuits
(Continued)
Application Hints
REFERENCE AMPLIFIER DRIVE AND COMPENSATION
The reference amplifier provides a voltage at pin 14 for
converting the reference voltage to a current, and a
turn-around circuit or current mirror for feeding the ladder.
The reference amplifier input currrent, I
, must always flow
into pin 14, regardless of the set-up method or reference
voltage polarity.
Connections for a positive voltage are shown in Figure 7
The reference voltage source supplies the full current I
14
.
For bipolar reference signals, as in the multiplying mode,
R15 can be tied to a negative voltage corresponding to the
minimum input level. It is possible to eliminate R15 with only
a small sacrifice in accuracy and temperature drift.
The compensation capacitor value must be increased with
increases in R14 to maintain proper phase margin; for R14
values of 1, 2.5 and 5 k
, minimum capacitor values are 15,
37 and 75 pF. The capacitor may be tied to either V
EE
or
ground, but using V
EE
increases negative supply rejection.
A negative reference voltage may be used if R14 is
grounded and the reference voltage is applied to R15 as
shown in Figure 8 A high input impedance is the main
DS005687-11
FIGURE 8. Negative V
REF
(Note 8)
DS005687-12
FIGURE 9. Programmable Gain Amplifier or
Digital Attenuator Circuit
(Note 8)
D
www.national.com
9
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|---|---|
| MC1408P8MOT87 | 制造商:Motorola 功能描述:1408 |
| MC1408PC | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 8b D/A Cnvtr RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| MC14093B | 制造商:Motorola Inc 功能描述: |
| MC14093BAL | 制造商: 功能描述: 制造商:undefined 功能描述: |
| MC14093BCP | 功能描述:邏輯門 3-18V Quad 2-Input RoHS:否 制造商:Texas Instruments 產(chǎn)品:OR 邏輯系列:LVC 柵極數(shù)量:2 線路數(shù)量（輸入/輸出）:2 / 1 高電平輸出電流:- 16 mA 低電平輸出電流:16 mA 傳播延遲時(shí)間:3.8 ns 電源電壓-最大:5.5 V 電源電壓-最小:1.65 V 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DCU-8 封裝:Reel |
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