Datasheet > PCM55JP

PCM55JP

更新时间： 2024-01-11 23:17:31

品牌	Logo	应用领域
德州仪器 - TI		输入元件光电二极管转换器
页数	文件大小	规格书
9页	88K
描述
PARALLEL, WORD INPUT LOADING, 3us SETTLING TIME, 16-BIT DAC, PDSO24, MINI, PLASTIC, SOIC-24

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技术参数
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PCM55JP 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	SOIC	包装说明：	PLASTIC, SOIC-24
针数：	24	Reach Compliance Code：	compliant
ECCN代码：	3A001.A.5.B	HTS代码：	8542.39.00.01
风险等级：	5.81	Is Samacsys：	N
最大模拟输出电压：	3 V	最小模拟输出电压：	-3 V
转换器类型：	D/A CONVERTER	输入位码：	COMPLEMENTARY BINARY, COMPLEMENTARY 2'S COMPLEMENT, COMPLEMENTARY OFFSET BINARY
输入格式：	PARALLEL, WORD	JESD-30 代码：	R-PDSO-G24
JESD-609代码：	e0	长度：	15.5 mm
湿度敏感等级：	1	标称负供电电压：	-5 V
位数：	16	功能数量：	1
端子数量：	24	最高工作温度：	70 °C
最低工作温度：		封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装等效代码：	SOP24,.5
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
峰值回流温度（摄氏度）：	235	电源：	+-5 V
认证状态：	Not Qualified	座面最大高度：	2.5 mm
标称安定时间 (tstl)：	3 µs	子类别：	Other Converters
最大压摆率：	45 mA	标称供电电压：	5 V
表面贴装：	YES	温度等级：	COMMERCIAL
端子面层：	TIN LEAD	端子形式：	GULL WING
端子节距：	1.27 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	8.4 mm
Base Number Matches：	1

PCM55JP 数据手册

error at each sampling point. The THD can then be ex-

pressed as:

INSTALLATION AND OPERATING

INSTRUCTIONS

(2)

POWER SUPPLY CONNECTIONS

[Ε_L(i) + Ε_Q(i)]²

For optimum performance and noise rejection, power supply

decoupling capacitors should be added as shown in the

connections diagram. These capacitors (1µF tantalum or

electrolytic recommended) should be located close to the

converter.

ε_rms

i = 1

THD =

•100%

Ε_rms

where E_rmsis the rms signal voltage level.

This expression indicates that, in general, there is a correla-

tion between the THD and the square root of the sum of the

squares of the linearity errors at each digital word of interest.

However, this expression does not mean that the worst-case

linearity error of the D/A is directly correlated to the THD.

MSB ERROR ADJUSTMENT PROCEDURE

(OPTIONAL)

The MSB error of the PCM54 and PCM55 can be adjusted

to make the differential linearity error (DLE) at BPZ essen-

tially zero. This is important when the signal output levels

are very low because zero crossing noise (DLE at BPZ)

becomes very significant when compared to the small code

changes occurring in the LSB portion of the converter.

For PCM54/55 the test period was chosen to be 22.7µs

(44.1kHz) which is compatible with the EIAJ STC-007

specification for PCM audio. The test frequency is 420Hz

and the amplitude of the input signal is 0dB, –20dB, and

–60dB down from full scale.

Differential linearity error at bipolar zero is guaranteed to

meet data sheet specifications without any external adjust-

ment. However, a provision has been made for an optional

adjustment of the MSB linearity point which makes it

possible to eliminate DLE error at BPZ (PCM54 only). Two

procedures are given to allow either static or dynamic

adjustment. The dynamic procedure is preferred because of

the difficulty associated with the static method (accurately

measuring 16-bit LSB steps).

Figure 4 shows the typical THD as a function of output

voltage.

Figure 5 shows typical THD as a function of frequency.

10.0

4.0

2.0

1.0

To statically adjust DLE at BPZ, refer to the circuit shown

in Figure 6 or the PCM54 connection diagram. After allow-

ing ample warm-up time (20-30 minutes) to assure stable

operation of the PCM54, select input code 8000 hexadeci-

mal (all bits off except the MSB). Measure and record it.

Change the digital input code to 7FFF hexadecimal (all bits

off except the MSB). Adjust the 100kΩ potentiometer to

make the audio output read 92µV more than the voltage

reading of the previous code (a ILSB step = 92µV).

0.4

0.2

0.1

14 Bits

0.04

0.02

0.01

0.004

0.002

0.001

16 Bits

–20

–60

–50

–40

–30

–10

A much simpler method is to dynamically adjust the DLE at

BPZ. Again, refer to Figure 6 or the PCM54 connection

diagram for circuitry and component values. Assuming the

device has been installed in a digital audio application

circuit, send the appropriate digital input to produce a –60dB

level sinusoidal output. While measuring the THD of the

audio circuit output, adjust the 100kΩ potentiometer until a

minimum level of distortion is observed.

V_OUT(dB)

0dB = Full-Scale Range (FSR)

FIGURE 4. Total Harmonic Distortion (THD) vs V_OUT

0.1

0.05

0.02

560kΩ

1MΩ

100kΩ

330kΩ

0.01

–20dB

–V_CC

0.005

0.002

Full Scale

0.001

100

10k 20k

FIGURE 6. MSB Differential Linearity at Bipolar Zero Ad-

justment Circuit (optional).

Frequency (Hz)

FIGURE 5. Total Harmonic Distortion (THD) vs

Frequency.

PCM54/55

1...3 4 567 8 9

中文翻译

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与PCM55JP相关器件

型号	品牌	获取价格	描述	数据表
PCM56	BB	获取价格	Serial Input 16-Bit Monolithic DIGITAL-TO-ANALOG CONVERTER
PCM56P	BB	获取价格	Serial Input 16-Bit Monolithic DIGITAL-TO-ANALOG CONVERTER
PCM56P	TI	获取价格	Series Input 16-Bit Monolithic Digital-to-Analog Converter 16-PDIP
PCM56P/PCM56U	ETC	获取价格	PCM56P. PCM56U - Serial Input 16-Bit Monolithic DIGITAL-TO-ANALOG CONVERTER
PCM56P-J	BB	获取价格	Serial Input 16-Bit Monolithic DIGITAL-TO-ANALOG CONVERTER
PCM56P-JG4	TI	获取价格	SERIAL INPUT LOADING, 1.5us SETTLING TIME, 16-BIT DAC, PDIP16, GREEN, PLASTIC, DIP-16
PCM56P-K	BB	获取价格	Serial Input 16-Bit Monolithic DIGITAL-TO-ANALOG CONVERTER
PCM56P-KG4	TI	获取价格	SERIAL INPUT LOADING, 1.5us SETTLING TIME, 16-BIT DAC, PDIP16, GREEN, PLASTIC, DIP-16
PCM56P-L	BB	获取价格	Serial Input 16-Bit Monolithic DIGITAL-TO-ANALOG CONVERTER
PCM56P-LG4	TI	获取价格	SERIAL INPUT LOADING, 1.5us SETTLING TIME, 16-BIT DAC, PDIP16, GREEN, PLASTIC, DIP-16

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