AD7228ABP

更新时间： 2024-01-21 00:03:10

品牌	Logo	应用领域
亚德诺 - ADI		转换器数模转换器信息通信管理
页数	文件大小	规格书
8页	209K
描述
LC2MOS Octal 8-Bit DAC

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中文翻译

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技术参数
数据手册
替代型号

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AD7228ABP 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	DIP	包装说明：	CERDIP-24
针数：	24	Reach Compliance Code：	not_compliant
ECCN代码：	3A001.A.2.C	HTS代码：	8542.39.00.01
风险等级：	5.07	Is Samacsys：	N
最大模拟输出电压：	10 V	最小模拟输出电压：
转换器类型：	D/A CONVERTER	输入位码：	BINARY
输入格式：	PARALLEL, 8 BITS	JESD-30 代码：	R-GDIP-T24
JESD-609代码：	e0	最大线性误差 (EL)：	0.195%
标称负供电电压：	-5 V	位数：	8
功能数量：	1	端子数量：	24
最高工作温度：	125 °C	最低工作温度：	-55 °C
封装主体材料：	CERAMIC, GLASS-SEALED	封装代码：	DIP
封装等效代码：	DIP24,.3	封装形状：	RECTANGULAR
封装形式：	IN-LINE	峰值回流温度（摄氏度）：	NOT SPECIFIED
电源：	12/15, GND/-5 V	认证状态：	Not Qualified
座面最大高度：	5.08 mm	最大稳定时间：	5 µs
子类别：	Other Converters	最大压摆率：	22 mA
表面贴装：	NO	技术：	MOS
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	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	7.62 mm	Base Number Matches：	1

AD7228ABP 数据手册

AD7228A

O P AMP SECTIO N

SUP P LY CURRENT

Each voltage-mode D/A converter output is buffered by a unity

gain noninverting CMOS amplifier. T his buffer amplifier is

tested with a 2 kΩ and 100 pF load but will typically drive a

2 kΩ and 500 pF load.

T he AD7228A has a maximum I_DDspecification of 22 mA and

a maximum I_SSof 20 mA over the –55°C to +125°C tempera-

ture range. T his maximum current specification is actually de-

termined by the current at –55°C. Figure 6 shows a typical plot

of power supply current versus temperature.

T he AD7228A can be operated single or dual supply. Operating

the part from single or dual supplies has no effect on the positive-

going settling time. However, the negative-going settling time to

voltages near 0 V in single supply will be slightly longer than the

settling time for dual supply operation. Additionally, to ensure

that the output voltage can go to 0 V in single supply, a transis-

tor on the output acts as a passive pull-down as the output volt-

age nears 0 V. As a result, the sink capability of the amplifier is

reduced as the output voltage nears 0 V in single supply. In dual

supply operation, the full sink capability of 400 µA at 25°C is

maintained over the entire output voltage range. T he single sup-

ply output sink capability is shown in Figure 4. T he negative

V_SSalso gives improved output amplifier performance allowing

an extended input reference voltage range and giving improved

slew rate at the output.

Figure 6. Power Supply Current vs. Tem perature

AP P LYING TH IS AD 7228A

UNIP O LAR O UTP UT O P ERATIO N

T his is the basic mode of operation for each channel of the

AD7228A, with the output voltage having the same positive po-

larity as V_REF. Connections for unipolar output operation are

shown in Figure 7. T he AD7228A can be operated from single

or dual supplies as outlined earlier. T he voltage at the reference

input must never be negative with respect to GND. Failure to

observe this precaution may cause parasitic transistor action and

possible device destruction. T he code table for unipolar output

operation is shown in T able II.

Figure 4. Single Supply Sink Current

T he output broadband noise from the amplifier is 300 µV

peak-to-peak. Figure 5 shows a plot of noise spectral density

versus frequency.

Figure 5. Noise Spectral Density vs. Frequency

D IGITAL INP UTS

T he AD7228A digital inputs are compatible with either T T L or

5 V CMOS levels. All logic inputs are static-protected MOS

gates with typical input currents of less than 1 nA. Internal in-

put protection is achieved by on-chip distributed diodes.

Figure 7. Unipolar Output Circuit

–5–

REV. A

1 2 3 456 7 8

中文翻译

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AD7228ABP 替代型号

型号	品牌	替代类型	描述	数据表
AD7228KPZ	ADI	完全替代	暂无描述

与AD7228ABP相关器件

型号	品牌	获取价格	描述	数据表
AD7228ABPZ-REEL	ADI	获取价格	LC2MOS Octal 8-Bit DAC
AD7228ABQ	ADI	获取价格	LC2MOS Octal 8-Bit DAC
AD7228ABR	ADI	获取价格	LC2MOS Octal 8-Bit DAC
AD7228ABR-REEL	ADI	获取价格	IC OCTAL, PARALLEL, 8 BITS INPUT LOADING, 8-BIT DAC, PDSO24, SOIC-24, Digital to Analog Co
AD7228ABRZ	ADI	获取价格	暂无描述
AD7228ABRZ-REEL	ADI	获取价格	LC2MOS Octal 8-Bit DAC
AD7228ACN	ADI	获取价格	LC2MOS Octal 8-Bit DAC
AD7228ACP	ADI	获取价格	LC2MOS Octal 8-Bit DAC
AD7228ACPZ-REEL	ADI	获取价格	LC2MOS Octal 8-Bit DAC
AD7228ACQ	ADI	获取价格	LC2MOS Octal 8-Bit DAC

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