- 您现在的位置：买卖IC网 > PDF目录17075 > EVAL-AD5433EBZ (Analog Devices Inc)BOARD EVAL FOR AD5433 PDF资料下载
参数资料
| 型号： | EVAL-AD5433EBZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 13/29页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR AD5433 |
| 产品培训模块： | DAC Architectures |
| 标准包装： | 1 |
| DAC 的数量： | 1 |
| 位数： | 10 |
| 采样率（每秒）： | 20.4M |
| 数据接口： | 并联 |
| 设置时间： | 35ns |
| DAC 型： | 电流 |
| 工作温度： | -40°C ~ 125°C |
| 已供物品： | 板，CD |
| 已用 IC / 零件： | AD5433 |
| 相关产品： | AD5433YRUZ-ND - IC DAC 10BIT MULTIPLYING 20TSSOP AD5433YCPZ-ND - IC DAC 10BIT MULTIPLYING 20LFCSP AD5433YRUZ-REEL7-ND - IC DAC 10BIT MULTIPLYING 20TSSOP AD5433YRUZ-REEL-ND - IC DAC 10BIT MULTIPLYING 20TSSOP AD5433YRU-REEL-ND - IC DAC 10BIT MULTIPLYING 20TSSOP AD5433YRU-ND - IC DAC 10BIT MULTIPLYING 20TSSOP |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页当前第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页
Data Sheet
AD5424/AD5433/AD5445
Rev. D | Page 19 of 28
03160-050
VREF
±10V
VDD
R/W
R2
R1
R3
20k
R4
10k
R5
20k
IOUT1
IOUT2
CS
RFB
GND
C1
A1
A2
AGND
DATA
INPUTS
VOUT = –VREF TO +VREF
AD5424/
AD5433/
AD5445
R1 AND R2 ARE USED ONLY IF GAIN ADJUSTMENT IS REQUIRED.
ADJUST R1 FOR VOUT = 0V WITH CODE 10000000 LOADED TO DAC.
MATCHING AND TRACKING IS ESSENTIAL FOR RESISTOR PAIRS R3 AND R4.
C1 PHASE COMPENSATION (1pF TO 2pF) MAY BE REQUIRED IF A1/A2 IS
A HIGH SPEED AMPLIFIER.
NOTES:
1.
2.
3.
VREF
Figure 50. Bipolar Operation (4-Quadrant Multiplication)
BIPOLAR OPERATION
In some applications, it may be necessary to generate full
4-quadrant multiplying operation or a bipolar output swing.
This can be easily accomplished by using another external
amplifier and some external resistors, as shown in Figure 50.
In this circuit, the second amplifier, A2, provides a gain of 2.
Biasing the external amplifier with an offset from the reference
voltage, results in full 4-quadrant multiplying operation. The
transfer function of this circuit shows that both negative and
positive output voltages are created as the input data (D) is
incremented from code zero (VOUT = –VREF) to midscale
(VOUT = 0 V) to full scale (VOUT = +VREF).
(
)
REF
n
REF
OUT
V
D
V
×
=
1
2
/
where D is the fractional representation of the digital word
loaded to the DAC and n is the resolution of the DAC.
D = 0 to 255 (8-bit AD5424)
= 0 to 1023 (10-bit AD5433)
= 0 to 4095 (12-bit AD5445)
When VIN is an ac signal, the circuit performs 4-quadrant
multiplication.
Table 8 shows the relationship between digital code and the
expected output voltage for bipolar operation (AD5424,
8-bit device).
Table 8. Bipolar Code Table
Digital Input
Analog Output (V)
1111 1111
+VREF (127/128)
1000 0000
0
0000 0001
–VREF (127/128)
0000 0000
–VREF (128/128)
Stability
In the I-to-V configuration, the IOUT of the DAC and the inverting
node of the op amp must be connected as closely as possible and
proper PCB layout techniques must be employed. Since every code
change corresponds to a step function, gain peaking may occur
if the op amp has limited GBP and there is excessive parasitic
capacitance at the inverting node. This parasitic capacitance
introduces a pole into the open-loop response, which can cause
ringing or instability in closed-loop applications.
An optional compensation capacitor, C1, can be added in parallel
small a value of C1 can produce ringing at the output, while too
large a value can adversely affect the settling time. C1 should be
found empirically, but 1 pF to 2 pF is generally adequate for
compensation.
相关PDF资料 |
PDF描述 |
|---|---|
| HCC08DRES-S13 | CONN EDGECARD 16POS .100 EXTEND |
| AP2155SG-13 | IC SINGLE USB SWITCH 800MA 8SOIC |
| V24C5E125BF3 | CONVERTER MOD DC/DC 5V 125W |
| SCRH8D43-680 | INDUCTOR SMD 68UH 1.2A 100KHZ |
| HBC08DRES-S13 | CONN EDGECARD 16POS .100 EXTEND |
相关代理商/技术参数 |
参数描述 |
|---|---|
| EVAL-AD5439EB | 制造商:Analog Devices 功能描述:EVAL BD FOR AD5439 DAC - Bulk |
| EVAL-AD5440EB | 制造商:Analog Devices 功能描述: |
| EVAL-AD5440EBZ | 制造商:Analog Devices 功能描述:EVAL BD FOR 8-/10-/12-BIT, PARALLEL INPUT, DUAL-CH, CURRENT - Bulk |
| EVAL-AD5443-DBRDZ | 功能描述:BOARD EVAL CARD CLINUX/STAMP RoHS:是 类别:编程器，开发系统 >> 评估板 - 数模转换器 (DAC) 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- DAC 的数量:4 位数:12 采样率（每秒）:- 数据接口:串行，SPI? 设置时间:3µs DAC 型:电流/电压 工作温度:-40°C ~ 85°C 已供物品:板 已用 IC / 零件:MAX5581 |
| EVAL-AD5443EB | 制造商:Analog Devices 功能描述:EVAL BD FOR AD5443, 0BIT HIGH BANDWIDTH MULTIPLYING DACS W/ - Bulk |
发布紧急采购，3分钟左右您将得到回复。