- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄8881 > DAC8248GPZ (Analog Devices Inc)IC DAC 12BIT DUAL W/BUFF 24DIP PDF資料下載
參數(shù)資料
| 型號： | DAC8248GPZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 15/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DAC 12BIT DUAL W/BUFF 24DIP |
| 產(chǎn)品培訓(xùn)模塊： | Data Converter Fundamentals DAC Architectures |
| 標(biāo)準(zhǔn)包裝： | 15 |
| 設(shè)置時(shí)間： | 1µs |
| 位數(shù)： | 12 |
| 數(shù)據(jù)接口： | 并聯(lián) |
| 轉(zhuǎn)換器數(shù)目： | 2 |
| 電壓電源： | 單電源 |
| 功率耗散（最大）： | 50µW |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 通孔 |
| 封裝/外殼： | 24-DIP（0.300"，7.62mm） |
| 供應(yīng)商設(shè)備封裝： | 24-PDIP |
| 包裝： | 管件 |
| 輸出數(shù)目和類型： | 2 電流，單極；2 電流，雙極 |
| 采樣率（每秒）： | 1M |
DAC8248
–8–
REV. B
Four Cycle Update
Five Cycle Update
Write Timing Cycle Diagram
PARAMETER DEFINITIONS
RESOLUTION (N)
The resolution of a DAC is the number of states (2
n) that the
full-scale range (FSR) is divided (or resolved) into; where n is
equal to the number of bits.
RELATIVE ACCURACY (INL)
Relative accuracy, or integral nonlinearity, is the maximum de-
viation of the analog output (from the ideal) from a straight line
drawn between the end points. It is expressed in terms of least
significant bit (LSB), or as a percent of full scale.
DIFFERENTIAL NONLINEARITY (DNL)
Differential nonlinearity is the worst case deviation of any adja-
cent analog output from the ideal 1 LSB step size. The devia-
tion of the actual “step size” from the ideal step size of 1 LSB is
called the differential nonlinearity error or DNL. DACs with
DNL greater than
±1 LSB may be nonmonotonic. ±1/2 LSB
INL guarantees monotonicity and
±1 LSB maximum DNL.
GAIN ERROR (GFSE)
Gain error is the difference between the actual and the ideal
analog output range, expressed as a percent of full-scale or in
terms of LSB value. It is the deviation in slope of the DAC
transfer characteristic from ideal.
Refer to PMI 1990/91 Data Book, Section 11, for additional
digital-to-analog converter definitions.
GENERAL CIRCUIT DESCRIPTION
CONVERTER SECTION
The DAC8248 incorporates two multiplying 12-bit current out-
put CMOS digital-to-analog converters on one monolithic chip.
It contains two highly stable thin-film R-2R resistor ladder net-
works, two 12-bit DAC registers, two 8-bit input registers, and
two 4-bit input registers. It also contains the DAC control logic
circuitry and 24 single-pole, double-throw NMOS transistor
current switches.
Figure 1 shows a simplified circuit for the R-2R ladder and tran-
sistor switches for a single DAC. R is typically 11 k
. The tran-
sistor switches are binarily scaled in size to maintain a constant
voltage drop across each switch. Figure 2 shows a single NMOS
transistor switch.
Figure 1. Simplified Single DAC Circuit Configuration.
(Switches Are Shown For All Digital Inputs at Zero)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| VI-2W3-MW-F1 | CONVERTER MOD DC/DC 24V 100W |
| VI-2W2-MW-F4 | CONVERTER MOD DC/DC 15V 100W |
| VI-2W2-MW-F3 | CONVERTER MOD DC/DC 15V 100W |
| MS3100R40-56P | CONN RCPT 85POS WALL MNT W/PINS |
| MS3454W28-9P | CONN RCPT 12POS JAM NUT W/PINS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DAC8248HP | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| DAC8248HS | 制造商:AD 制造商全稱:Analog Devices 功能描述:Dual 12-Bit 8-Bit Byte Double-Buffered CMOS D/A Converter |
| DAC8308 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Converter IC |
| DAC8311 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:1.8V to 5.5V, 80mA, 14- and 16-Bit, Low-Power, Single-Channel,DIGITAL-TO-ANALOG CONVERTERS in SC70 Package |
| DAC8311_08 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:1.8V to 5.5V, 80mA, 14- and 16-Bit, Low-Power, Single-Channel,DIGITAL-TO-ANALOG CONVERTERS in SC70 Package |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。