DAC1003D160

更新时间： 2024-01-23 01:58:57

品牌	Logo	应用领域
艾迪悌 - IDT		/
页数	文件大小	规格书
18页	433K
描述
Dual 10 bits DAC, up to 160 MHz, 2 x interpolation

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DAC1003D160 技术参数

生命周期：	Transferred	零件包装代码：	QFP
包装说明：	QFP, TQFP80,.55SQ	针数：	80
Reach Compliance Code：	unknown	风险等级：	5.68
Is Samacsys：	N	转换器类型：	D/A CONVERTER
JESD-30 代码：	S-PQFP-G80	位数：	10
功能数量：	2	端子数量：	80
最高工作温度：	85 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	QFP
封装等效代码：	TQFP80,.55SQ	封装形状：	SQUARE
封装形式：	FLATPACK	电源：	3.3 V
认证状态：	Not Qualified	子类别：	Other Converters
最大压摆率：	85 mA	标称供电电压：	3.3 V
表面贴装：	YES	温度等级：	INDUSTRIAL
端子形式：	GULL WING	端子节距：	0.5 mm
端子位置：	QUAD	Base Number Matches：	1

DAC1003D160 数据手册

DAC1003D160

Integrated Device Technology

Dual 10 bits DAC, up to 160 MHz, 2 x interpolation

7. Functional description

The DAC1003D160 is a segmented architecture composed of a 7-bit thermometer

sub-DAC and the remaining 3-bit in a binary weighted sub-DAC.

The device produces two complementary current outputs on both channels, respectively

pins IOUT/IOUTN and QOUT/QOUTN which need to be connected via a load resistor to

the ground.

Figure 3 shows the equivalent analog output circuit of one DAC, which consists of a

parallel combination of PMOS current sources and associated switches for each segment.

The cascade source configuration enables the increase of the output impedance of the

source and the improvement of the dynamic performance of the DAC by introducing less

distortion.

Figure 4 shows the internal reference configuration. In this case the bias current is given

by the output of the internal regulator connected to the inverting input of the internal

operational amplifiers, while external resistors R_Iand R_Qare connected respectively to

pins IVIRES and QVIRES. Thus the output current of the two DACs is typically fixed to

20 mA with an appropriate choice of these resistors. This configuration is optimal for

temperature drift compensation because the band gap can be matched with the voltage

on the feedback resistors.

The relation between full-scale output current I_O(fs)and the R_I(R_Q) is:

2048  V_GAPOUT

R_I= ----------------------------------------- 

82  I_OFS

The output current can also be adjusted by imposing an external reference voltage to the

inverting input pin GAPOUT and disabling the internal band gap with pin GAPD set to

HIGH. At a voltage lower than 1.2 V the current can be set at values lower than 20 mA.

The input references at pins IVIRES and QVIRES may also be driven by separate

reference voltages to adjust independently the two DAC currents.

DAC1003D160

GAPD

INTERNAL

BAND GAP

AGND

GAPOUT

I DAC current

sources array

IVIRES

DAC1003D160

IOUT/QOUT

IOUTN/QOUTN

Q DAC current

sources array

QVIRES

AGND AGND

014aaa537

014aaa538

Fig 3. Equivalent analog output circuit

Fig 4. Internal reference configuration

DAC1003D160_3

Product data sheet

Rev. 03 — 2 July 2012

6 of 18

1...3 4 567 8 9...18

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与DAC1003D160相关器件

型号	品牌	描述	获取价格	数据表
DAC1003D160HW	IDT	Dual 10 bits DAC, up to 160 MHz, 2 x interpolation	获取价格
DAC1003D160HW	NXP	Dual 10 bits DAC, up to 160 MHz, 2 x interpolation	获取价格
DAC1003D160HW/C1	IDT	D/A Converter, 2 Func, PQFP80	获取价格
DAC1003D160HW/C1,5	NXP	IC 10-BIT DAC, PQFP80, 12 X 12 MM, 1 MM HEIGHT, PLASTIC, MS-026, SOT841-1, HTQFP-80, Digit	获取价格
DAC1003D160HW/C1:1	NXP	IC 10-BIT DAC, PQFP80, 12 X 12 MM, 1 MM HEIGHT, PLASTIC, MS-026, SOT841-1, HTQFP-80, Digit	获取价格
DAC1003D160HW/C1-T	IDT	IC,D/A CONVERTER,DUAL,10-BIT,TQFP,80PIN	获取价格

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