- 您現在的位置：買賣IC網 > PDF目錄17081 > EVAL-AD5629RSDZ (Analog Devices Inc)BOARD EVAL FOR AD5629 PDF資料下載
參數資料
| 型號： | EVAL-AD5629RSDZ |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 14/32頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD EVAL FOR AD5629 |
| 標準包裝： | 1 |
| 系列： | denseDAC |
| DAC 的數量： | 8 |
| 位數： | 12 |
| 數據接口： | I²C，串行 |
| 設置時間： | 2.5µs |
| DAC 型： | 電壓 |
| 工作溫度： | -40°C ~ 105°C |
| 已供物品： | 板 |
| 已用 IC / 零件： | AD5629 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁當前第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁
Data Sheet
AD5629R/AD5669R
Rev. D | Page 21 of 32
THEORY OF OPERATION
DIGITAL-TO-ANALOG CONVERTER (DAC) SECTION
The AD5629R/AD5669R are fabricated on a CMOS process.
The architecture consists of a string of DACs followed by an
output buffer amplifier. Each part includes an internal
1.25 V/2.5 V, 5 ppm/°C reference with an internal gain of 2.
Figure 48 and Figure 49 show block diagrams of the DAC
architecture.
OUTPUT
AMPLIFIER
GAIN = ×2
DAC
REGISTER
REF (+)
VREFIN/VREFOUT
VOUT
REF (–)
RESISTOR
STRING
GND
INTERNAL
REFERENCE1
1CAN BE OVERDRIVEN
BY VREFIN/VREFOUT.
08
81
9
-04
5
Figure 48. DAC Architecture for Internal Reference Configuration
REF
BUFFER
OUTPUT
AMPLIFIER
GAIN = ×2
VREFIN/VREFOUT
GND
REF (+)
REF (–)
RESISTOR
STRING
VOUT
08
81
9-
04
6
R
Figure 49. DAC Architecture for External Reference Configuration
Because the input coding to the DAC is straight binary, the ideal
output voltage when using an external reference is given by
N
REFIN
OUT
D
V
2
The ideal output voltage when using the internal reference is
given by
N
REFOUT
OUT
D
V
2
where:
D
= decimal equivalent of the binary code that is loaded to the
DAC register as follows:
0 to 4095 for AD5629R (12 bits).
0 to 65,535 for AD5669R (16 bits).
N
= the DAC resolution.
RESISTOR STRING
The resistor string section is shown in Figure 50. It is simply a
string of resistors, each of value R. The code loaded into the
DAC register determines at which node on the string the
voltage is tapped off to be fed into the output amplifier. The
voltage is tapped off by closing one of the switches connecting
the string to the amplifier. Because it is a string of resistors, it
is guaranteed monotonic.
TO OUTPUT
AMPLIFIER
R
08
81
9-
0
47
Figure 50. Resistor String
INTERNAL REFERENCE
internal gain of 2. The AD5629R-1/AD5669R-1 have a 1.25 V,
5 ppm/°C reference, giving a full-scale output of 2.5 V or the
AD5629R-2/AD5629R-3/AD5669R-2/AD5669R-3 have a 2.5 V,
5 ppm/°C reference, working between a supply from 4.5 V to
5.5 V giving a full-scale output of 5 V. The on-board reference
is off at power-up, allowing the use of an external reference. The
internal reference is enabled via a write to the control register
(see Table 8).
The internal reference associated with each part is available at
the VREFOUT pin. A buffer is required if the reference output is
used to drive external loads. When using the internal reference,
it is recommended that a 100 nF capacitor be placed between
the reference output and GND for reference stability.
Individual channel power-down is not supported while using
the internal reference.
相關PDF資料 |
PDF描述 |
|---|---|
| ADR292GRUZ-REEL7 | IC VREF SRS PREC 4.096V 8-TSSOP |
| ECC19DREN | CONN EDGECARD 38POS .100 EYELET |
| V24C5E125B3 | CONVERTER MOD DC/DC 5V 125W |
| 0210490862 | CABLE JUMPER 1.25MM .127M 17POS |
| SC52-100 | INDUCTOR SMD 10UH 1.15A 2.52MHZ |
相關代理商/技術參數 |
參數描述 |
|---|---|
| EVAL-AD5660DKZ | 功能描述:BOARD DEMO FOR AD5660 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 數模轉換器 (DAC) 系列:nanoDAC™ 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- DAC 的數量:4 位數:12 采樣率（每秒）:- 數據接口:串行，SPI? 設置時間: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-AD5660EB | 制造商:Analog Devices 功能描述:EVAL BD FOR AD5660 - Bulk |
| EVAL-AD5660EBZ | 功能描述:BOARD EVALUATION FOR AD5660 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 數模轉換器 (DAC) 系列:nanoDAC™ 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- DAC 的數量:4 位數:12 采樣率（每秒）:- 數據接口:串行，SPI? 設置時間: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-AD5662EB | 制造商:Analog Devices 功能描述:EVAL BOARD - Bulk |
| EVAL-AD5662EBZ | 功能描述:BOARD EVAL FOR AD5662 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 數模轉換器 (DAC) 系列:nanoDAC™ 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- DAC 的數量:4 位數:12 采樣率（每秒）:- 數據接口:串行，SPI? 設置時間: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 |
發(fā)布緊急采購，3分鐘左右您將得到回復。