参数资料
| 型号： | DAC8222GPZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 2/15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
–10–
REV. C
Figure 24. Unipolar Configuration (Two-Quadrant Multiplication)
APPLICATIONS INFORMATION
UNIPOLAR OPERATION
Figure 24 shows a simple unipolar (2-quadrant multiplication)
circuit using the DAC8222 and OP270 dual op amp (use two
OP42s for higher speeds), and Table II the corresponding code
table. Resistors R1, R2, and R3, R4 are used only if full-scale
gain adjustments are required. Low temperature coefficient
(approximately 50 ppm/
°C) resistors or trimmers should be
used. Maximum full-scale error without these resistors for the
top grade device and VREF =
±10 V is 0.024% and 0.097% for
the low grade. C1 and C2 provide phase compensation to help
reduce overshoot and ringing when high speed op amps are used.
Full-scale adjustment is accomplished by loading the digital
inputs with all 1s and adjusting R1 (or R3) so that
VOUT = VREF
×
4095
4096
Full-scale can also be adjusted by varying VREF voltage, thus
eliminating R1, R2, R3 and R4. Zero adjustment is performed
by setting the DAC’s digital inputs to all 0s and adjusting the op
amp’s offset adjust so that VOUT = 0 V. To maintain monotonic-
ity and minimize gain and linearity errors, it is recommended
that the op amp offset voltage be adjusted to less than 10% of
1 LSB (244
V) over the operating temperature range of interest.
Table II. Unipolar Binary Code Table (Refer to Figure 24)
Binary Number in
DAC Register
Analog Output, VOUT
MSB
LSB
(DAC A or DAC B)
1111 1111 1111
–VREF
4095
4096
1000 0000 0000
–VREF
2048
4096
= –1/2 VREF
0000 0000 0001
–VREF
1
4096
0000 0000 0000
0 V
NOTE
1 LSB = (2
–12) (V
REF) =
1
4096
(VREF)
BIPOLAR OPERATION
The bipolar (offset binary) four-quadrant operation configura-
tion using the DAC8222 is shown in Figure 25 and the corre-
sponding code in Table III. The circuit makes use of the OP470
a quad op amp (use four OP42s for higher speeds).
Resistors R1, R2, R3, and R4 may be omitted and full-scale
output voltage may be adjusted by varying VREF or the value
of R5 and R8. If resistors R1, R2, R3, and R4 are omitted,
* RESISTORS R1 THROUGH R4 ARE ONLY NECESSARY TO TRIM FOR
ABSOLUTE ACCURACY BETTER THAN
0.01%, SEE TEXT FOR
COMPLETE DETAILS.
** REGISTERS AND CONTROL CIRCUITRY OMITTED FOR SIMPLICITY.
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。