Select COS228-family 36V 25MHz precision op-amps: 1/2/4-ch checklist

COSINE’s catalog splits 36V precision op-amps by bandwidth: 2 MHz / 10 MHz / 25 MHz. If you need faster settling and higher GBP while staying in the high-voltage precision band, evaluate the 36V, 25 MHz family—not by over-driving the 10 MHz COS227 tier, and not by mixing it with 5V zero-drift parts.

Metrics below follow the 2025 catalog public table. Request datasheets from Jarwey; qualify with measured data before production.

Product features

High precision, low drift, low noise density, wide supply range; 1 / 2 / 4 channel split at shared metrics.

Applications

Sensor amplification, medical instruments, portable systems, industrial control processing, weighing scales.

36V / 25 MHz precision family table

Versus the catalog 10 MHz COS227 family: GBP 10→25 MHz, slew 3→10 V/µs, noise ~6→5 nV/√Hz, Iq ~1.3→2.6 mA. Cross-check OPA228 / OPA2228-class second sources; verify quad package/pinout separately.

7-step checklist before you freeze the BOM

1. Do you need 25 MHz? Step up only if 10 MHz settling/bandwidth is insufficient—avoid burning Iq for free.
2. Supply: Confirm 36V / ±15V habit vs 5V zero-drift.
3. Channels: Match 1 / 2 / 4 to board channel budget.
4. Error budget: 50 µV / 0.2 µV/°C inside system allowance?
5. Noise: 5.0 nV/√Hz @1 kHz OK for sensor/weighing front-end?
6. Thermal / Iq: ~2.6 mA per amp acceptable (especially quads)?
7. Package & samples: SOP-8 ≠ TSSOP-14; request datasheets/samples from Jarwey.

Pages & contact

• COS228USR · COS2228USR · COS4228UATR

Send incumbent PNs, target bandwidth, and channel count to Jarwey: kerry.w@jarwey.cn · Contact. We support datasheet requests, selection, application help, sampling/small batch, and lead-time coordination.