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ACPL-7970-500E 机电元件

The ACPL-7970 is a 1-bit, second-order sigma-delta (∑-∆) modulator converts an analog input signal into a highspeed data stream with galvanic isolation based on optical power supply with dynamic range
隔离电压 VISO 1 kV; See Definitions电源电压 VCC 6.0工作温度 TA 3

产品实拍图

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产品应用与封装尺寸

图纸取自原厂规格书,点击可放大查看原始尺寸标注。

引脚定义与内部结构

引脚符号名称
980 ± 0.25
1016 (0.040)
109 (0.430)
20 (0.080)
762 ± 0.25
020 (0.008)
356 ± 0.13 0.33 (0.013)
数据来源:原厂规格书引脚图

关键参数速览

隔离电压 VISO
1 kV; See Definitions
电源电压 VCC
6.0
工作温度 TA
3

产品特点 Features

  • 10 MHz internal clock
  • 1-bit, second-order sigma-delta modulator
  • 16 bits resolution no missing codes (12 bits ENOB)
  • 78 dB SNR
  • 6 mV/°C maximum offset drift
  • ±1% maximum gain error
  • ACPL-7970 to form an isolated programmable two-chip
  • A/D converter.
  • figuration port. A second multiplexed input is available to allow measurements with a second isolated modulator without additional hardware. Refer to the HCPL-0872 data sheet for details.
  • Notes:
  • SPI and QSPI are trademarks of Motorola Corp.
  • Power Supplies and Bypassing
  • As shown in Figure 19, a floating power supply (which in
  • PC Board Layout
  • The design of the printed circuit board (PCB) should follow
  • When sensing currents large enough to cause signifi- cant heating of the shunt, the temperature coefficient

绝对最大额定值 Absolute Maximum Ratings(TA = 25°C)

超过下表数值可能造成器件永久损坏,设计时请留余量。

参数符号最小最大单位
Storage TemperatureT-55+125°C
Ambient Operating TemperatureT-40+105°C
Supply VoltageV , V DD1 DD2-0.56.0V
Steady-State Input Voltage [1, 3]V , V IN+ IN–-2V + 0.5 DD1V
Two-Second Transient InputVoltage [2] V , V IN+ IN–-6V + 0.5 DD1V
Digital Output VoltagesMCLK, MDAT-0.5V + 0.5 DD2V
Lead Solder Temperature260° C for 10sec., 1.6 mm belowseating plane
数据来源:原厂规格书

安全与绝缘额定值(DIN EN/IEC 60747−5−5)

说明符号值单位
Installation classification per DIN VDE0110/1.89, Table 1
for rated mains voltage ≤ 150 VrmsI-IV
for rated mains voltage ≤ 300 VrmsI-IV
for rated mains voltage ≤ 450 V rmsI-IV
for rated mains voltage ≤ 600 VrmsI-IV
Pollution Degree (DIN VDE 0110/1.89)2
Input to Output Test Voltage, Method bV1671Vpeak
V x 1.875 = V , 100% Production Testwith t = 1 sec,
Partial Discharge < 5 pC
Input to Output Test Voltage, Method aV1426Vpeak
V x 1.6 = V , Type and Sample Test, t= 10 sec,
Partial Discharge < 5 pC
Highest Allowable Overvoltage (TransientOvervoltage, t = 60 sec) V8000Vpeak
(External Clearance)distance throughair
(External Creepage)distance path alongbody
Minimum Internal Plastic Gap0.5 mm Through insulationdistance, conductorto conductor,
(Internal Clearance)usually the directdistance betweenthe photoemitter and
photodetectorinside the optocouplercavity
Tracking Resistance CTI>175 V DIN IEC 112/VDE0303 Part 1
Isolation GroupIIIa Material Group(DIN VDE 0110, 1/89,Table 1)

电气特性 Electrical Characteristics(TA = 25°C)

参数符号最小Typ.[1]最大单位测试条件图号
ADD1DD2IN
V – = 0 V (single-endedconnection);tested withSinc3filter,256 decimationratio.
Resolution16BitsDecimation filter output setto 16 bits
Integral NonlinearityINL-15315LSBT = -40° C to +85° C; seeDefinitions
-25325LSBT = 85° C to 105° C
Differential NonlinearityDNL-0.90.9LSBNo missing codes, guaranteedby
design; see Definitions section
Offset ErrorV-20.42mVT = -40° C to +105° C;5
see Definitions section
Offset Drift vs. TemperatureTCV OS26mV/°CV = 5 V DD1
Offset Drift vs. V220mV/V
Internal ReferenceVoltage V320mV
Reference VoltageTolerance G E-11%T = 25° C, V + = -320 to A IN+320 mV;
see Definitions section
-22%T = -40° C to +105° C,6
V + = -320 to +320 mV
V Drift vs. TemperatureTCG60ppm/°C
V Drift vs. V-1.3mV/VNote 4
Full-Scale DifferentialVoltage FSR320mVV = V + – V –; Note 2
Average Input BiasCurrent I-0.3mAV = 5V, V = 5V, V + =0 V; 7
INADD1 DD2 IN
Average Input ResistanceR24kΩAcross V + or V – to GND1;Note 3
Input CapacitanceC8pFAcross V + or V – to GND1
DYNAMIC CHARACTERISTICSV + = 400 mVpp, 1 kHz sinewave
Signal-to-Noise RatioSNR6878dBT = -40° C to +105° C;8
see Definitions section
Signal-to-(Noise +Distortion) SNDR6575dBT = -40° C to +105° C;9
Ratiosee Definitions section
Effective Number ofBits ENOB12Bitssee Definitions section
Isolation TransientImmunity CMR25kV/msV = 1 kV; See Definitionssection
Common-Mode RejectionRatio CMRR74dB
Output High VoltageVV –V –VI = -200 mA
OHDD2DD2OUT
Output Low VoltageV0.6VI = +1.6 mA
V Supply CurrentI914mAV + = –320 mV to +320 mV10
DD1DD1IN
V Supply CurrentI5.28mAV = 5 V supply11
DD2DD2DD2
4.67mAV = 3.3 V supply DD212
4. V Drift vs. V canbe expressed as –0.4%/Vwithreference to V.
Unless otherwise noted,T = -40° C to +105° C, V= 4.5V to 5.5V, V= 3 Vto 5.5 V.
Modulator Clock OutputFrequency f91011MHzClock duty cycle 40% to60% 13
Data Access Time After MCLKRising Edge t40nsC = 15 pF4
Data Hold Time After MCLKRising Edge t10nsC = 15 pF4
Input-Output MomentaryWithstand V5000VrmsRH < 50%, t = 1 min; T= 25° C 1, 2
Input-Output ResistanceR I-O10121013ΩV I-O = 500 V DC3
1011ΩT A = 100° C3
Input-Output CapacitanceC1.4pFf = 1 MHz3

特性曲线(Typical Performance Curves)

应用领域 Applications

25 kV/ms common-mode transient immunitySafety and regulatory approvals:Motor phase and rail current sensingAnalog InputLatch-up ConsiderationModulator Data OutputAnalog Input Voltage InputFull-Scale Range 640 mV+Full-Scale +320 mV+Recommended Input Range +200 mV

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