- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄16588 > EVAL-AD5290EBZ (Analog Devices Inc)BOARD EVAL FOR AD5290 PDF資料下載
參數(shù)資料
| 型號： | EVAL-AD5290EBZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 10/20頁 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR AD5290 |
| 設(shè)計資源： | AD5290 Evaluation Tools |
| 標準包裝： | 1 |
| 主要目的： | 數(shù)字電位器 |
| 已用 IC / 零件： | AD5290 |
| 已供物品： | 板 |
| 相關(guān)產(chǎn)品： | AD5290YRMZ50-R7-ND - IC POT DGTL 50KW 256POS 10-MSOP AD5290YRMZ10-R7-ND - IC POT DGTL 10KW 256POS 10-MSOP AD5290YRMZ100-R7-ND - IC POT DGTL 100KW 256POS 10-MSOP AD5290YRMZ50-ND - IC DGTL POT 50K 256POS 10MSOP AD5290YRMZ100-ND - IC DGTL POT 100K 256POS 10MSOP AD5290YRMZ10-ND - IC DGTL POT 10K 256POS 10MSOP |
AD5290
Data Sheet
Rev. C | Page 18 of 20
APPLICATIONS
HIGH VOLTAGE DAC
AD5290 can be configured as a high voltage DAC, with out-
put voltage as high as 30 V. The circuit is shown in Figure 33.
The output is
)]
1
(
V
2
.
1
[
256
)
(
1
2
R
D
V
O
(4)
where D is the decimal code from 0 to 255.
AD5290
U2
OP284
V+
V–
OP284
VOUT
VDD
U1B
VDD
RBIAS
ADR512
D1
R2
R1
B
100k
0
4716
-01
8
U1A
Figure 33. High Voltage DAC
PROGRAMMABLE POWER SUPPLY
as the variable resistor at the regulator’s FB pin to provide the
programmable power supply (Figure 34). The output is
]
)
(
1
[
V
23
.
1
2
256
R
V
AB
D
O
(5)
a short, and VDD is one diode voltage drop below +5 V. The
output slowly establishes the final value.
AD5290
ADP1611
1.23V
CC
150pF
RC
220k
COUT
10
F
VOUT
D1
L1
4.7
H
IN
GND
SS
FB
RT
SW
COMP
U2
C1
0.1
F
VDD
R1
100k
A
W
B
CIN
10
F
5V
R2
8.5k
CSS
22nF
04716-
019
U1
Figure 34. Programmable Power Supply
AUDIO VOLUME CONTROL
Because of its good THD performance and high voltage
capability, AD5290 can be used as a digital volume control.
If AD5290 is used directly as an audio attenuator or gain
amplifier, a large step change in the volume level at any arbi-
trary time can lead to an abrupt discontinuity of the audio
signal causing an audible zipper noise. To prevent this, a zero-
crossing window detector can be inserted to the CS line to
delay the device update until the audio signal crosses the
window. Since the input signal can operate on top of any
dc level rather than absolute zero volt level, zero-crossing in
this case means the signal is ac-coupled, and the dc offset
level is the signal zero reference point.
The configuration to reduce zipper noise (Figure 35) and the
results of using this configuration are shown in Figure 36. The
input is ac-coupled by C1 and attenuated down before feeding
into the window comparator formed by U2, U3, and U4B
The upper limit of the comparator is set above its offset and,
therefore, the output pulses high whenever the input falls
between 2.502 V and 2.497 V (or 0.005 V window) in this
example. This output is AND’ed with the chip select signal
such that the AD5290 updates whenever the signal crosses
the window. To avoid a constant update of the device, the
chip select signal should be programmed as two pulses, rather
than as one shown in Figure 36.
In Figure 35, the lower trace shows that the volume level changes
from a quarter-scale to full-scale when a signal change occurs
near the zero-crossing window.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| RCA18DTAN | CONN EDGECARD 36POS R/A .125 SLD |
| RCA18DTAH | CONN EDGECARD 36POS R/A .125 SLD |
| RCA18DTAD | CONN EDGECARD 36POS R/A .125 SLD |
| EVAL-ADCMP582BCPZ | BOARD EVALUATION ADCMP582BCP |
| HSM06DRAI | CONN EDGECARD 12POS R/A .156 SLD |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EVAL-AD5292EBZ | 功能描述:BOARD EVAL FOR AD5292 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:- 標準包裝:1 系列:- 主要目的:電信，線路接口單元（LIU） 嵌入式:- 已用 IC / 零件:IDT82V2081 主要屬性:T1/J1/E1 LIU 次要屬性:- 已供物品:板，電源，線纜，CD 其它名稱:82EBV2081 |
| EVAL-AD5360EBZ | 功能描述:BOARD EVAL FOR AD5360 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 數(shù)模轉(zhuǎn)換器 (DAC) 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- DAC 的數(shù)量:4 位數(shù):12 采樣率（每秒）:- 數(shù)據(jù)接口:串行，SPI? 設(shè)置時間:3µs DAC 型:電流/電壓 工作溫度:-40°C ~ 85°C 已供物品:板 已用 IC / 零件:MAX5581 |
| EVAL-AD5360EBZ1 | 制造商:AD 制造商全稱:Analog Devices 功能描述:16-Channel, 16-/14-Bit, Serial Input, Voltage-Output DAC |
| EVAL-AD5361EBZ | 功能描述:BOARD EVAL FOR AD5361 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 數(shù)模轉(zhuǎn)換器 (DAC) 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- DAC 的數(shù)量:4 位數(shù):12 采樣率（每秒）:- 數(shù)據(jù)接口:串行，SPI? 設(shè)置時間:3µs DAC 型:電流/電壓 工作溫度:-40°C ~ 85°C 已供物品:板 已用 IC / 零件:MAX5581 |
| EVAL-AD5361EBZ1 | 制造商:AD 制造商全稱:Analog Devices 功能描述:16-Channel, 16-/14-Bit, Serial Input, Voltage-Output DAC |
發(fā)布緊急采購，3分鐘左右您將得到回復。