- 您现在的位置：买卖IC网 > PDF目录8577 > DAC8248FSZ-REEL (Analog Devices Inc)IC DAC 12BIT DUAL W/BUFF 24SOIC PDF资料下载
参数资料
| 型号： | DAC8248FSZ-REEL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 15/16页 |
| 文件大小： | 0K |
| 描述： | IC DAC 12BIT DUAL W/BUFF 24SOIC |
| 产品培训模块： | Data Converter Fundamentals DAC Architectures |
| 标准包装： | 1,000 |
| 设置时间： | 1µs |
| 位数： | 12 |
| 数据接口： | 并联 |
| 转换器数目： | 2 |
| 电压电源： | 单电源 |
| 功率耗散（最大）： | 50µW |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 24-SOIC W |
| 包装： | 带卷 (TR) |
| 输出数目和类型： | 2 电流，单极；2 电流，双极 |
| 采样率（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)
相关PDF资料 |
PDF描述 |
|---|---|
| AD7547LRZ-REEL | IC DAC 12BIT DUAL LC2MOS 24-SOIC |
| VE-26B-IV-F2 | CONVERTER MOD DC/DC 95V 150W |
| AD9785BSVZRL | IC DAC 12BIT 800MSPS 100TQFP |
| HFA1135IBZ | IC OPAMP CFA 360MHZ LP 8-SOIC |
| LTC2754BIUKG-16#TRPBF | IC DAC 16BIT QUAD IOUT 52-QFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DAC8248FW | 制造商:Analog Devices 功能描述: |
| DAC8248GBC | 制造商:未知厂家 制造商全称:未知厂家 功能描述:12-Bit Digital-to-Analog Converter |
| DAC8248GP | 制造商:AD 制造商全称:Analog Devices 功能描述:Dual 12-Bit 8-Bit Byte Double-Buffered CMOS D/A Converter |
| DAC8248GPZ | 功能描述:IC DAC 12BIT DUAL W/BUFF 24DIP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:- 标准包装:1 系列:- 设置时间:4.5µs 位数:12 数据接口:串行，SPI? 转换器数目:1 电压电源:单电源 功率耗散（最大）:- 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商设备封装:8-SOICN 包装:剪切带 (CT) 输出数目和类型:1 电压，单极；1 电压，双极 采样率（每秒）:* 其它名称:MCP4921T-E/SNCTMCP4921T-E/SNRCTMCP4921T-E/SNRCT-ND |
| DAC8248HP | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
发布紧急采购，3分钟左右您将得到回复。