الصفحة الرئيسية > الدوائر المتكاملة الدوائر المتكاملة > الدوائر المتكاملة الخطية التناظرية > ISO124U

ISO124U

Isolation Amplifier, 1500Vrms, 0.01% NL, 50kHz, DIP-24

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جزء الشركة المصنعة ： جزء الشركة المصنعة

ISO124U

الحزمة ： الحزمة

DIP-24 (0.600 inch / 15.24mm width)

العلامة التجارية ： العلامة التجارية

فئات المنتجات:：فئات المنتجات

الدوائر المتكاملة الخطية التناظرية, الدوائر المتكاملة الدوائر المتكاملة

توصيات أخرى قد تكون مهتماً بها.

SII9396SCNUC-BAR

IS43TR16256BL-125KBLI

الوصف

نظرة عامة على المنتج

The ISO124U from Texas Instruments is a precision isolation amplifier with 1500Vrms continuous isolation, 0.01% nonlinearity, and 50kHz bandwidth in a DIP-24 package.

المواصفات الرئيسية

النوع	Precision Isolation Amplifier
جهد العزل	1500 Vrms (continuous)
Gain	1 V/V (fixed)
Gain Accuracy	+/-0.5% (max)
Nonlinearity	+/-0.01% (max)
Bandwidth	50 kHz
Isolation Rejection	140 dB @ 60 Hz
جهد الإمداد	+/-4.5V to +/-18V (each side)
Isolation Capacitance	2.2 pF (typical)
الحزمة	DIP-24 (0.600 inch width)
درجة حرارة التشغيل	-25C to +85C

الميزات

1500Vrms continuous isolation rating
Fixed unity gain with 0.5% accuracy
0.01% maximum nonlinearity
50kHz signal bandwidth
140dB isolation rejection at 60Hz
Dual independent supply rails (+/-4.5V to +/-18V)
2.2pF isolation capacitance

التطبيقات

Medical ECG/EEG isolation
Industrial process control isolation
Motor current sensing isolation

مقدمة المنتج:ISO124U مقدمة المنتج

The ISO124U from Texas Instruments (originally Burr-Brown) is a precision isolation amplifier that provides galvanic isolation between input and output with 1500Vrms continuous rating. The device achieves 0.01% maximum nonlinearity through a duty-cycle modulation-demodulation scheme, where the input voltage is converted to a pulse-width modulated signal, transmitted across the isolation barrier via an internal transformer, and demodulated on the output side. The fixed unity gain (1 V/V) with 0.5% accuracy simplifies the signal path without external gain-setting components. The 50 kHz bandwidth supports most industrial and medical sensing applications. The 140 dB isolation rejection at 60 Hz eliminates power-line interference in sensitive measurements. The DIP-24 package provides wide creepage and clearance distances for high-voltage isolation. The dual independent supply rails allow the input and output sides to be powered from different sources.

مبدأ العمل:ISO124U مبدأ العمل

The ISO124U uses a duty-cycle modulation technique to transmit analog signals across the isolation barrier. On the input side, the input voltage is compared against a 500 kHz triangular wave in a PWM modulator, producing a pulse-width modulated digital signal whose duty cycle is proportional to the input voltage. This digital signal is transmitted through an internal planar transformer that provides the galvanic isolation barrier. On the output side, a demodulator reconstructs the analog signal by filtering the PWM signal with a 2nd-order low-pass filter. The 50 kHz bandwidth is determined by the output filter cutoff frequency. The 0.01% nonlinearity is achieved because the PWM modulation is inherently linear – the duty cycle is directly proportional to the input voltage with high precision. The isolation characteristics are determined by the transformer: 1500Vrms continuous rating, 2.2pF coupling capacitance, and 140dB isolation rejection at 60 Hz. The transformer’s high magnetizing inductance and low inter-winding capacitance ensure signal integrity while maintaining safety isolation.

وصف الدبوس:ISO124U تعريف الدبوس ووظائفه

دبوس	الاسم	النوع	الوظيفة
1	VIN+	المدخلات	Non-inverting signal input
2	VIN-	المدخلات	Inverting signal input
3	V+IN	الطاقة	Input side positive supply
4	V-IN	الطاقة	Input side negative supply
5	COM IN	الطاقة	Input side common (ground)
6,7	نورث كارولاينا	-	No connect
8	أو إس سي	المخرجات	Internal oscillator output (decouple)
9	COM OUT	الطاقة	Output side common (ground)
10	V-OUT	الطاقة	Output side negative supply
11	V+OUT	الطاقة	Output side positive supply
12	VOUT	المخرجات	Isolated output voltage

Application Scenarios:In which products and applications isISO124U مستعمل

Medical ECG front-end with 1500Vrms patient isolation and 0.01% linearity
Industrial 4-20mA current loop receiver with 140dB 60Hz rejection
Motor phase current sensing with high-side shunt and isolated output
Data acquisition system channel-to-channel isolation with 50kHz bandwidth

Alternative Models:What chips are recommended as replacements for ISO124U

الشركة المصنعة	رقم الجزء	الحزمة	الملاحظات
TI	ISO124P	DIP-24	Wider temperature range version
TI	AMC1301DWVR	SOIC-8	Isolated current-sense amplifier, newer
ADI	AD202JN	DIP-24	Isolation amplifier, alternative
TI	ISO224	SOIC-16	Isolated amplifier, newer, smaller
مختبرات السيليكون	Si8920B-IS	SOIC-8	Isolated current sense, digital output