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Digital isolator BL BL7121AH supporting 100 Mbps data rate and 3750 VRMS isolation for motor control

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Digital isolator BL BL7121AH supporting 100 Mbps data rate and 3750 VRMS isolation for motor control

CMTI(kV/us) : 100kV/us

Propagation Delay(tpd) : 11ns

Voltage - Supply : 2.35V~5.5V;2.35V~5.5V

Default Output : High Level

Number of Forward Channels : 1

Number of Reverse Channels : 1

Operating Temperature : -40℃~+125℃

Description : SOIC-8 Digital Isolators RoHS

Mfr. Part # : BL7121AH

Model Number : BL7121AH

Package : SOIC-8

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Product Overview

The BL712x series from Shanghai Belling Co., Ltd. are high-performance, dual-channel digital isolators designed for robust isolation in demanding applications. These devices offer a 100 Mbps data rate and a strong isolation barrier with a typical CMTI of 100 kV/s, an isolation rating of up to 3750 VRMS, and a projected lifetime of over 50 years. They operate across a wide supply voltage range (2.5 V to 5.5 V) and temperature range (40C to +125C), supporting 2.5-V to 5.5-V level translation. The BL712x series provides high electromagnetic immunity and low emissions with low power consumption, effectively preventing noise currents from damaging sensitive circuitry. Available in an 8-pin narrow SOIC package, these isolators are ideal for industrial automation, motor control, solar inverters, power supplies, and medical equipment.

Product Attributes

Brand: Shanghai Belling Co., Ltd.
Product Line: BL712x Series
Package Type: SOIC-8 Narrow (A)

Technical Specifications

Parameter	Model/Condition	Value	Unit
Data Rate	BL712x	100	Mbps
Typical CMTI	BL712x	100	kV/s
Isolation Rating	BL712x	3750	VRMS
Projected Lifetime	BL712x	>50	years
Surge Capability	BL712x	8	kV
Supply Voltage Range	BL712x	2.5 to 5.5	V
Level Translation	BL712x	2.5-V to 5.5-V
Operating Temperature Range	BL712x	-40 to +125	C
Low Propagation Delay (TYP)	5V supply	11	ns
Pulse Width Distortion (TYP)	BL712x	3	ns
Absolute Maximum Supply Voltage	VDD1, VDD2	6	V
ESD Rating (HBM)	BL712x	6000	V
ESD Rating (CDM)	BL712x	1500	V
Recommended Operating Supply Voltage	VDD1, VDD2	2.35 to 5.5	V
High-Level Output Current (5V)	IOH	-4	mA
Low-Level Output Current (5V)	IOL	4	mA
High-Level Input Voltage	VIH	0.7 x VDDI	V
Low-Level Input Voltage	VIL	0.25 x VDDI	V
Insulation Withstanding Voltage	VISO	3.75	kVRMS
Comparative Tracking Index	CTI	>600	V
Maximum Working Isolation Voltage (AC)	VIOWM	450	VRMS
Maximum Surge Isolation Voltage	VIOSM	5000	VPK
Power Consumption (TYP)	BL7120, 5.5V, 50MHz, 15pF	130	mW
Pin Count	SOIC-8 Narrow	8
Device Models	BL7120AL	100Mbps, 2 Channel, 2/0 Fwd/Bwd, LOW Default
Device Models	BL7120AH	100Mbps, 2 Channel, 2/0 Fwd/Bwd, HIGH Default
Device Models	BL7121AL	100Mbps, 2 Channel, 1/1 Fwd/Bwd, LOW Default
Device Models	BL7121AH	100Mbps, 2 Channel, 1/1 Fwd/Bwd, HIGH Default
Device Models	BL7122AL	100Mbps, 2 Channel, 1/1 Fwd/Bwd, LOW Default
Device Models	BL7122AH	100Mbps, 2 Channel, 1/1 Fwd/Bwd, HIGH Default

2309271714_BL-BL7121AH_C7436522.pdf

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