HS7541AJN

更新时间： 2024-02-27 15:19:08

品牌	Logo	应用领域
西伯斯 - SIPEX		转换器数模转换器光电二极管
页数	文件大小	规格书
7页	113K
描述
12-Bit CMOS Multiplying DAC

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技术参数
数据手册

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HS7541AJN 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
包装说明：	DIP, DIP18,.3	Reach Compliance Code：	unknown
风险等级：	5.92	转换器类型：	D/A CONVERTER
输入位码：	BINARY, OFFSET BINARY	JESD-30 代码：	R-XDIP-T18
JESD-609代码：	e0	最大线性误差 (EL)：	0.01%
位数：	12	功能数量：	1
端子数量：	18	最高工作温度：	125 °C
最低工作温度：	-55 °C	封装主体材料：	CERAMIC
封装代码：	DIP	封装等效代码：	DIP18,.3
封装形状：	RECTANGULAR	封装形式：	IN-LINE
电源：	15 V	认证状态：	Not Qualified
子类别：	Other Converters	标称供电电压：	15 V
表面贴装：	NO	技术：	CMOS
温度等级：	MILITARY	端子面层：	Tin/Lead (Sn/Pb)
端子形式：	THROUGH-HOLE	端子节距：	2.54 mm
端子位置：	DUAL	Base Number Matches：	1

HS7541AJN 数据手册

10KΩ

20KΩ

10KΩ

20KΩ

10KΩ

20KΩ

FEEDBACK

REF

20KΩ

R = 10KΩ

20KΩ

S11

R = 10KΩ

REF

OUT1

1/4096

85pF

30pF

LEAKAGE

OUT2

OUT1

OUT2

LEAKAGE

D11 (MSB)

D0 (LSB)

Switches shown for digital inputs "high"

Figure 3. Equivalent Circuit – All Inputs High

Figure 1. Simplified DAC Circuit

2001V ESD Protection

The twelve output current-steering switches are

in series with the R-2R ladder, and therefore,

can introduce bit errors. It is essential then, that

the switch “on” resistance be binarily scaled so

that the voltage drop across each switch remains

constant. If, for example, switch S₀of Figure 1

was designed with an “on” resistance of 10

ohms, switch S₁for 20 ohms, etc., then with a

10V reference input, the current through S₀is

0.5mA, S₁is 0.25mA, etc.; a constant 5mV drop

will then be maintained across each switch.

In the design of the HS7541A’s data inputs,

2001V ESD resistance has been incorporated

through careful layout and the inclusion of input

protection circuitry.

Equivalent Circuit Analysis

Figures2and3showtheequivalentcircuitsforall

digital inputs LOW and HIGH respectively. The

referencecurrentisswitchedtoI_OUT2whenallinputs

are LOW, and to I_OUT1when all inputs are HIGH.

The I_LEAKAGEcurrent source is the combination of

surface and junction leakages to the substrate; the

1/4096currentsourcerepresentstheconstant1-bit

current drain through the ladder terminating resis-

tor. The output capacitance is dependent upon the

digitalinputcode,andthereforevariesbetweenthe

low and high values.

To further insure accuracy across the full tem-

peraturerange,permanently“on”MOSswitches

are included in series with the feedback resistor

andtheR-2Rladder’sterminatingresistor.These

series switches are equivalently scaled to two

times switch S₁₁(MSB) and to switch S₀(LSB)

respectively to maintain constant relative volt-

age drops with varying temperature. During any

testing of the resistor ladder or R_FB(such as

incoming inspection), V_DDmust be present to

turn “on” these series switches.

Output Impedance

Theoutputresistance,asinthecaseoftheoutput

capacitance, varies with the digital input code.

The resistance, looking back into the I_OUT1ter-

GAIN TRIM

+15V

FEEDBACK

(–10V)

REF

2KΩ

R = 10KΩ

GAIN TRIM

(MSB)

REF

OUT1

+15V

15pF

1KΩ

LEAKAGE

30pF

85pF

–

REF

INPUT

DATA

OUT

HS7541A

R = 10KΩ

REF

OUT2

–15V

1/4096

LEAKAGE

(LSB)

GND

Figure 2. Equivalent Circuit – All Inputs Low

Figure 4. Unipolar Operation

HS7541A

12-Bit CMOS Multiplying DAC

1 2 3 456 7

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与HS7541AJN相关器件

型号	品牌	描述	获取价格	数据表
HS7541AJP	SIPEX	12-Bit CMOS Multiplying DAC	获取价格
HS7541AJS	SIPEX	12-Bit CMOS Multiplying DAC	获取价格
HS7541AKN	SIPEX	12-Bit CMOS Multiplying DAC	获取价格
HS7541AKP	SIPEX	12-Bit CMOS Multiplying DAC	获取价格
HS7541AKS	SIPEX	12-Bit CMOS Multiplying DAC	获取价格
HS7541AQ	ETC	12-Bit Digital-to-Analog Converter	获取价格

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