- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄8885 > AD5780ACPZ (Analog Devices Inc)IC DAC VOLT OUT 18BIT 24LFCSP PDF資料下載
參數(shù)資料
| 型號(hào)： | AD5780ACPZ |
| 廠商： | Analog Devices Inc |
| 文件頁(yè)數(shù)： | 10/28頁(yè) |
| 文件大小： | 0K |
| 描述： | IC DAC VOLT OUT 18BIT 24LFCSP |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 設(shè)置時(shí)間： | 2.5µs |
| 位數(shù)： | 18 |
| 數(shù)據(jù)接口： | DSP，MICROWIRE?，QSPI?，串行，SPI? |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 電壓電源： | 模擬和數(shù)字，雙 ± |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-VFQFN 裸露焊盤，CSP |
| 供應(yīng)商設(shè)備封裝： | 24-LFCSP-VQ EP（4x5） |
| 包裝： | 托盤 |
| 輸出數(shù)目和類型： | 1 電壓，雙極 |
| 配用： | EVAL-AD5780SDZ-ND - BOARD EVALUATION FOR AD5780 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)當(dāng)前第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)
AD5780
Data Sheet
Rev. E | Page 18 of 28
THEORY OF OPERATION
The AD5780 is a high accuracy, fast settling, single, 18-bit,
serial input, voltage output DAC. It operates from a VDD supply
voltage of 7.5 V to 16.5 V and a VSS supply of 16.5 V to 2.5 V.
Data is written to the AD5780 in a 24-bit word format via a 3-wire
serial interface. The AD5780 incorporates a power-on reset
circuit that ensures the DAC output powers up to 0 V with the
VOUT pin clamped to AGND through a ~6 k internal resistor.
DAC ARCHITECTURE
The architecture of the AD5780 consists of two matched DAC
sections. A simplified circuit diagram is shown in Figure 49.
The six MSBs of the 18-bit data-word are decoded to drive
63 switches, E0 to E62. Each of these switches connects one
of 63 matched resistors to either the buffered VREFP or buffered
VREFN voltage. The remaining 12 bits of the data-word drive the
S0 to S11 switches of a 12-bit voltage mode R-2R ladder network.
2R
S0
2R
S1
2R
S11
2R
E62
2R
E61
2R
E0
12-BIT R-2R LADDER
...
R
2R
VOUT
SIX MSBs DECODED INTO
63 EQUAL SEGMENTS
VREFP
VREFN
09649-
049
Figure 49. DAC Ladder Structure Serial Interface
SERIAL INTERFACE
The AD5780 has a 3-wire serial interface (SYNC, SCLK, and
SDIN) that is compatible with SPI, QSPI, and MICROWIRE
interface standards, as well as most DSPs (see Figure 2 for a
timing diagram).
Input Shift Register
The input shift register is 24 bits wide. Data is loaded into the
device MSB first as a 24-bit word under the control of a serial
clock input, SCLK, which can operate at up to 35 MHz. The
input register consists of a R/W bit, three address bits, and
20 data bits as shown in Table 6. The timing diagram for this
operation is shown in Figure 2.
Table 6. Input Shift Register Format
MSB
LSB
DB23
DB22
DB21
DB20
DB19 to DB0
R/W
Register address
Register data
Table 7. Decoding the Input Shift Register
R/W
Register Address
Description
0
No operation (NOP). Used in readback operations.
0
1
Write to the DAC register.
0
1
0
Write to the control register.
0
1
Write to the clearcode register.
0
1
0
Write to the software control register.
1
0
1
Read from the DAC register.
1
0
1
0
Read from the control register.
1
0
1
Read from the clearcode register.
1
X is don’t care.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| VE-BW2-MV-F3 | CONVERTER MOD DC/DC 15V 150W |
| AD5544BRSZ | IC DAC 16BIT SER QUAD 28SSOP |
| VE-BWV-MY-F1 | CONVERTER MOD DC/DC 5.8V 50W |
| AD7228ACNZ | IC DAC 8BIT OCTAL W/AMP 24DIP |
| MS27468T15B5PLC | CONN HSG RCPT 5POS JAMNUT PINS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD5780ACPZ-REEL7 | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 18-Bit +/-1 LSB INL VOut RoHS:否 制造商:Analog Devices 轉(zhuǎn)換器數(shù)量:4 DAC 輸出端數(shù)量:4 轉(zhuǎn)換速率: 分辨率:12 bit 接口類型:Serial (I2C) 穩(wěn)定時(shí)間: 最大工作溫度:+ 105 C 安裝風(fēng)格: 封裝 / 箱體:TSSOP 封裝:Reel |
| AD5780BCPZ | 功能描述:IC DAC VOLT OUT 18BIT 24LFCSP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 設(shè)置時(shí)間:4.5µs 位數(shù):12 數(shù)據(jù)接口:串行，SPI? 轉(zhuǎn)換器數(shù)目:1 電壓電源:單電源 功率耗散（最大）:- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:8-SOICN 包裝:剪切帶 (CT) 輸出數(shù)目和類型:1 電壓，單極；1 電壓，雙極 采樣率（每秒）:* 其它名稱:MCP4921T-E/SNCTMCP4921T-E/SNRCTMCP4921T-E/SNRCT-ND |
| AD5780BCPZ-REEL7 | 制造商:Analog Devices 功能描述:DAC 1-CH Segment 18-bit 24-Pin LFCSP EP T/R 制造商:Analog Devices 功能描述:18BIT, 1LSB, BUFFERED REF - Tape and Reel 制造商:Analog Devices 功能描述:IC DAC VOLT OUT 18BIT 24LFCSP 制造商:Analog Devices Inc. 功能描述:Digital to Analog Converters - DAC 18bit 1LSB buffered Ref 制造商:Analog Devices 功能描述:CONVERTER - DAC |
| AD5781 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Ultra Stable, 16-Bit ±0.5 LSB INL |
| AD5781ARUZ | 功能描述:IC DAC 18BIT SRL 20TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 設(shè)置時(shí)間:4.5µs 位數(shù):12 數(shù)據(jù)接口:串行，SPI? 轉(zhuǎn)換器數(shù)目:1 電壓電源:單電源 功率耗散（最大）:- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:8-SOICN 包裝:剪切帶 (CT) 輸出數(shù)目和類型:1 電壓，單極；1 電壓，雙極 采樣率（每秒）:* 其它名稱:MCP4921T-E/SNCTMCP4921T-E/SNRCTMCP4921T-E/SNRCT-ND |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。