参数资料
| 型号： | DAC8222GPZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 13/15页 |
| 文件大小： | 0K |
| 描述： | IC DAC 12BIT DUAL W/BUFF 24DIP |
| 产品培训模块： | Data Converter Fundamentals DAC Architectures |
| 标准包装： | 15 |
| 设置时间： | 1µs |
| 位数： | 12 |
| 转换器数目： | 2 |
| 电压电源： | 单电源 |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 24-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 24-PDIP |
| 包装： | 管件 |
| 输出数目和类型： | 2 电流，单极；2 电流，双极 |
| 采样率（每秒）： | 1M |
DAC8222
–7–
REV. C
Figure 18. Burn-In Circuit
PARAMETER DEFINITIONS
RESOLUTION (n)
The resolution of a DAC is the number of states (2
n) into which
the full-scale range (FSR) is divided (or resolved); 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.
See Orientation in Digital-to-Analog Converters Section of the
current data book, for additional parameter definitions.
GENERAL CIRCUIT DESCRIPTION
CONVERTER SECTION
The DAC8222 contains four 12-bit registers (two input regis-
ters and two DAC registers), two highly stable thin-film R-2R
resistor ladder networks, and interface control logic circuitry.
Also included are 24 single-pole, double-throw, NMOS transis-
tor current switches.
Figure 19. Simplified Single DAC Circuit Configuration.
(Switches Are Shown for All Digital Inputs at Zero)
Figure 20. N-Channel Current Steering Switch
Figure 19 shows a simplified circuit for the R-2R ladder network
and transistor switches for one DAC. R is typically 11 k
. The
transistor switches are binarily scaled in size to maintain a con-
stant voltage drop across each switch. Figure 20 shows a single
NMOS transistor switch.
The binary-weighted currents are switched between IOUT and
AGND by the N-channel MOS transistor switches. The selec-
tion between IOUT and AGND is determined by the digital input
code. It is important to note here that the voltage difference
相关PDF资料 |
PDF描述 |
|---|---|
| DAC8229FSZ-REEL | IC DAC 8BIT DUAL V-OUT 20SOIC |
| DAC8248FS | IC DAC 12BIT DUAL W/BUFF 24-SOIC |
| DAC8408GP | IC DAC 8BIT QUAD W/MEMORY 28-DIP |
| DAC8413EP | IC DAC 12BIT QUAD V-OUT 28-DIP |
| DAC8420FQ | IC DAC 12BIT QUAD SRL LP 16-CDIP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DAC8222HP | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| DAC8222HS | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| DAC8228 | 制造商:AD 制造商全称:Analog Devices 功能描述:Dual 8-Bit CMOS D/A Converter with Voltage Output |
| DAC8228FP | 功能描述:IC DAC 8BIT DUAL V-OUT 20-DIP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:- 标准包装:2,400 系列:- 设置时间:- 位数:18 数据接口:串行 转换器数目:3 电压电源:模拟和数字 功率耗散（最大）:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:36-TFBGA 供应商设备封装:36-TFBGA 包装:带卷 (TR) 输出数目和类型:* 采样率（每秒）:* |
| DAC8228FPZ | 功能描述:IC DAC 8BIT DUAL V-OUT 20DIP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:- 标准包装:47 系列:- 设置时间:2µs 位数:14 数据接口:并联 转换器数目:1 电压电源:单电源 功率耗散（最大）:55µW 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:28-SSOP（0.209"，5.30mm 宽） 供应商设备封装:28-SSOP 包装:管件 输出数目和类型:1 电流，单极；1 电流，双极 采样率（每秒）:* |
发布紧急采购，3分钟左右您将得到回复。