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DAC7678

更新时间： 2024-02-04 06:37:55
品牌 Logo 应用领域
德州仪器 - TI 转换器脉冲
页数 文件大小 规格书
52页 1793K
描述
12-Bit, Octal-Channel, Ultra-Low Glitch, Voltage Output, Two-Wire Interface Digital-to-Analog Converter with 2.5V Internal Reference

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DAC7678 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：QFN
包装说明：VQFN-24针数：24
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：1 week
风险等级：1.7Is Samacsys：N
最大模拟输出电压：5.5 V最小模拟输出电压：
转换器类型：D/A CONVERTER输入位码：BINARY, 2'S COMPLEMENT BINARY
输入格式：SERIALJESD-30 代码：S-PQCC-N24
JESD-609代码：e4长度：4 mm
最大线性误差 (EL)：0.0244%湿度敏感等级：3
位数：12功能数量：1
端子数量：24最高工作温度：125 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：HVQCCN封装等效代码：LCC24,.16SQ,20
封装形状：SQUARE封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：260电源：3/5 V
认证状态：Not Qualified采样速率：0.083 MHz
座面最大高度：1 mm最大稳定时间：10 µs
标称安定时间 (tstl)：7 µs子类别：Other Converters
最大压摆率：0.006 mA标称供电电压：3.6 V
表面贴装：YES温度等级：AUTOMOTIVE
端子面层：Nickel/Palladium/Gold (Ni/Pd/Au)端子形式：NO LEAD
端子节距：0.5 mm端子位置：QUAD
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：4 mm
Base Number Matches：1

DAC7678 数据手册

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DAC7678  
www.ti.com  
SBAS493A –FEBRUARY 2010–REVISED AUGUST 2010  
12-Bit, Octal-Channel, Ultra-Low Glitch, Voltage Output, Two-Wire Interface  
Digital-to-Analog Converter with 2.5V Internal Reference  
Check for Samples: DAC7678  
1
FEATURES  
APPLICATIONS  
•
•
•
•
•
•
Portable Instrumentation  
Closed-Loop Servo-Control  
Process Control  
Data Acquisition Systems  
Programmable Attenuation  
PC Peripherals  
23  
•
Relative Accuracy:  
–
1 LSB INL  
•
•
Glitch Energy: 0.15nV-s  
Internal Reference:  
–
2.5V Reference Voltage (disabled by  
default)  
–
–
–
–
±5mV Initial Accuracy (max)  
DESCRIPTION  
5ppm/°C Temperature Drift (typ)  
25ppm/°C Temperature Drift (max)  
20mA Sink/Source Capability  
The DAC7678 is a low-power, voltage-output, octal  
channel, 12-bit digital-to-analog converter (DAC). The  
DAC7678 includes a 2.5V internal reference (disabled  
by default), giving a full-scale output voltage range of  
5V. The internal reference has an initial accuracy of  
±5mV and can source up to 20mA at the  
VREFIN/VREFOUT pin. The device is monotonic,  
provides very good linearity, and minimizes undesired  
code-to-code transient voltages (glitch).  
•
•
Power-On Reset to Zero Scale or Midscale  
–
Devices in the TSSOP Package Reset to  
Zero Scale  
–
Devices in the QFN Package Reset to Zero  
Scale or Midscale  
Ultra-Low Power Operation: 0.13mA/Channel  
at 5V (without internal reference current)  
The DAC7678 uses a versatile, 2-wire serial interface  
that is I2C-compatible and operates at clock rates of  
up to 3.4MHz. Multiple devices can share the same  
bus.  
•
•
•
Wide Power-Supply Range: +2.7V to +5.5V  
2-Wire Serial Interface ( I2C™ compatible)  
The DAC7678 incorporates a power-on-reset circuit  
that ensures the DAC output powers up to either  
zero-scale or mid-scale until a valid code is written to  
the device. These devices contain a power-down  
feature, accessed over the serial interface that  
reduces the current consumption of the device to  
typically 0.42mA at 5V. Power consumption (including  
internal reference) is typically 3.56mW at 3V,  
reducing to 0.68mW in power-down mode. The low  
power consumption, internal reference, and small  
footprint make this device ideal for portable,  
battery-operated equipment. The DAC7678 is drop-in  
On-Chip Output Buffer Amplifier with  
Rail-to-Rail Operation  
•
Temperature Range: –40°C to +125°C  
AVDD  
VREFIN/VREFOUT  
DAC7678  
2.5V  
Reference  
VOUT  
VOUT  
VOUT  
VOUT  
VOUT  
VOUT  
VOUT  
VOUT  
H
G
F
DAC Register H  
DAC Register G  
DAC Register F  
DAC Register E  
DAC Register D  
DAC Register C  
DAC Register B  
DAC Register A  
Data Buffer H  
Data Buffer G  
Data Buffer F  
Data Buffer E  
Data Buffer D  
Data Buffer C  
Data Buffer B  
Data Buffer A  
12-Bit DAC  
12-Bit DAC  
12-Bit DAC  
12-Bit DAC  
12-Bit DAC  
12-Bit DAC  
12-Bit DAC  
12-Bit DAC  
E
D
C
B
A
and  
functionally  
compatible  
with  
DAC5578,  
DAC6578, and DAC7578. All devices are available in  
a 4x4 QFN-24 package and a TSSOP-16 package.  
RELATED DEVICES  
8-BIT  
10-BIT  
12-BIT  
Pin- and Function-Compatible  
(w/internal reference)  
—
—
DAC7678  
SCL  
SDA  
Input Control Logic  
Buffer Control  
Register Control  
Pin- and Function-Compatible  
DAC5578 DAC6578 DAC7578  
Power-Down  
Control Logic  
Control Logic  
ADDR0  
ADDR1  
LDAC  
RSTSEL  
CLR  
GND  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
2
3
I2C is a trademark of NXP Semiconductors.  
All other trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2010, Texas Instruments Incorporated  
 
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DAC7678 替代型号

型号 品牌 替代类型 描述 数据表
DAC7578 TI

功能相似

 8-/10-/12-Bit, Octal-Channel, Ultra-Low Glitch, Voltage Output, Two-Wire Interface Digital
DAC6578 TI

功能相似

 8-/10-/12-Bit, Octal-Channel, Ultra-Low Glitch, Voltage Output, Two-Wire Interface Digital
DAC5578 TI

功能相似

 8-/10-/12-Bit, Octal-Channel, Ultra-Low Glitch, Voltage Output, Two-Wire Interface Digital

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