Availability ADUM1200BRZ? Replacement?

Hi Daniel,

Have you any specific application/performance requirements that might indicate the most suitable options?

If you're only using one single channel, and package type is not a limiting factor at present then there should be many options, at least from a technical standpoint.

Alternatives include:

• MAX22245/46: 2-channel, 5kVrms, low power, High data rate 200Mbps, default output options, flexible supply options
• ADUM110N: same package, flexible supplies, failsafe output options, 3kVrms withstand rating,  150Mbps.
•  ADUM120N/121N: same package, Higher data rate 150Mbps, has flexible supply configurations and a higher withstand voltage at 3kVrms and has failsafe output options.
• ADUM210N: single channel isolator with 5kVrms withstand voltage, has higher data rate 150Mbps, flexible supplies and has failsafe output options. 
• ADUM220N/221N/225N/226N: 2-channel 5kVrms withstand, flexible supplies, Fail-safe high/low options, 150Mbps Data rate,
• MAX12934/12935: 200Mbps, 5KVrms, low power, default output states, flexible supply options
• MAX12930/31: 2-channel, 3kVrms/5kVrms Withstand rate options, flexible supplies, low-power, 25/150Mbps, 8 pin SOIC_N & 16 pin SOIC_W package options.
• Other options such as the micropower ADUM1240/41/45/46 family may be a good option if the 2Mbps data rate satisfies your application needs and the ADUM3200/01/3210/3211, ADUM3100, ADUM1210, ADUM1280/81/85/86, ADUM2200/01 are other potential replacements that come to mind.

 Best Regards,

Shane

Hi Shane,

Thank you for your detailed response. Sorry, I could not reply earlier.

My application requires only a single channel. The ADUM provides galvanic isolation, a high voltage ESD protection is not required. Regarding data rate, the signal is a trigger pulse that is about 400 us long with a repetition rate of about 2 kHz. We'd like to see a latency of about max.150 ns.

What is the typical jitter of these devices? I could not find any specs on it in the ADUM datasheet.

Thanks.

Best regards,
Daniel

Hi Daniel,

For best jitter performance I'd recommend the MAX22245/46. You'll find jitter specified for each supply voltage in the MAX22245/46 Datasheet.

https://datasheets.maximintegrated.com/en/ds/MAX22245-MAX22246.pdf

Jitter is specified for our newer products in their datasheets. Examples are the ADUM110N, ADUM120/121N,  ADUM210N,  ADUM220/221/225/226N. Some of our older parts have jitter specified also, but not all of them. For example ADUM1280/81/85/86 has jitter specified.

Best Regards,

Shane

Thanks. That's helpful.

Regarding the interpretation of "data rate" which you listed above, is that just the inverse of the minimum pulse width?

Hi Dan,

Yes, 

Regards,

Shane