Datasheet > 转换器 > 数模转换器> DAC0832LCWM/NOPB

DAC0832LCWM/NOPB

更新时间： 2024-02-18 00:10:06

品牌	Logo	应用领域
德州仪器 - TI		转换器模数转换器
页数	文件大小	规格书
29页	1597K
描述
DAC0830/DAC0832 8-Bit Î¼P Compatible, Double-Buffered D to A Converters

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DAC0832LCWM/NOPB 技术参数

生命周期：	Obsolete	零件包装代码：	DIP
包装说明：	,	针数：	20
Reach Compliance Code：	unknown	风险等级：	5.73
转换器类型：	D/A CONVERTER	位数：	8
Base Number Matches：	1

DAC0832LCWM/NOPB 数据手册

DAC0830, DAC0832

SNAS534B –MAY 1999–REVISED MARCH 2013

www.ti.com

is high.

WR₂: Write 2 (active low). This signal, in combination with XFER, causes the 8-bit data which is available in the

input latch to transfer to the DAC register.

XFER: Transfer control signal (active low). The XFER will enable WR₂.

Other Pin Functions

DI₀-DI₇: Digital Inputs. DI₀is the least significant bit (LSB) and DI₇is the most significant bit (MSB).

I_OUT1: DAC Current Output 1. I_OUT1is a maximum for a digital code of all 1's in the DAC register, and is zero for

all 0's in DAC register.

I_OUT2: DAC Current Output 2. I_OUT2is a constant minus I_OUT1, or I_OUT1+ I_OUT2= constant (I full scale for a fixed

reference voltage).

R_fb: Feedback Resistor. The feedback resistor is provided on the IC chip for use as the shunt feedback

resistor for the external op amp which is used to provide an output voltage for the DAC. This on-chip

resistor should always be used (not an external resistor) since it matches the resistors which are used in

the on-chip R-2R ladder and tracks these resistors over temperature.

V_REF: Reference Voltage Input. This input connects an external precision voltage source to the internal R-2R

ladder. V_REFcan be selected over the range of +10 to −10V. This is also the analog voltage input for a 4-

quadrant multiplying DAC application.

V_CC

Digital Supply Voltage. This is the power supply pin for the part. V_CCcan be from +5 to +15V_DC.

Operation is optimum for +15V_DC

GND: The pin 10 voltage must be at the same ground potential as I_OUT1and I_OUT2for current switching

applications. Any difference of potential (V_OSpin 10) will result in a linearity change of :

(1)

For example, if V_REF= 10V and pin 10 is 9mV offset from I_OUT1and I_OUT2the linearity change will be 0.03%.

Pin 3 can be offset ±100mV with no linearity change, but the logic input threshold will shift.

Linearity Error

Figure 3. a) End Point Test After

Zero and fs adj.

Figure 4. b) Best Straight Line

Figure 5. c) Shifting fs adj. to

Pass

Best Straight Line Test

Definition of Terms

Resolution: Resolution is directly related to the number of switches or bits within the DAC. For example, the

DAC0830 has 2⁸or 256 steps and therefore has 8-bit resolution.

Linearity Error: Linearity Error is the maximum deviation from a straight line passing through the endpoints of

the DAC transfer characteristic. It is measured after adjusting for zero and full-scale. Linearity error is a

parameter intrinsic to the device and cannot be externally adjusted.

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与DAC0832LCWM/NOPB相关器件

型号	品牌	描述	获取价格	数据表
DAC0832LCWMX	TI	DAC0830/DAC0832 8-Bit Î¼P Compatible, Double-	获取价格
DAC0832LCWMX/NOPB	TI	DAC0830/DAC0832 8-Bit Î¼P Compatible, Double-	获取价格
DAC0832LJ	NSC	8-Bit P Compatible, Double-Buffered D to A Converters	获取价格
DAC084S085	NSC	8-Bit Micro Power QUAD Digital-to-Analog Converter with Rail-to-Rail Output	获取价格
DAC084S085	TI	具有轨到轨输出的 8 位微功耗四路数模转换器	获取价格
DAC084S085_07	NSC	8-Bit Micro Power QUAD Digital-to-Analog Converter with Rail-to-Rail Output	获取价格

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