DATASHEET ISL28191, ISL28291 FN6156 Rev 10.00 Single and Dual Single Supply Ultra-Low Noise, Low Distortion Rail-to-Rail July 22, 2014 Output, Op Amp The ISL28191 and ISL28291 are tiny single and dual ultra-low Features noise, ultra-low distortion operational amplifiers. They are fully 1.7nV/ Hz input voltage noise at 1kHz specified to operate down to +3V single supply. These amplifiers have outputs that swing rail-to-rail and an input 1kHz THD+N typical 0.00018% at 2V V P-P OUT common mode voltage that extends to ground Harmonic Distortion -76dBc, -70dBc, f = 1MHz o (ground sensing). 61MHz -3dB bandwidth The ISL28191 and ISL28291 are unity gain stable with an 630V maximum offset voltage input referred voltage noise of 1.7nV/Hz. Both parts feature 0.00018% THD+N at 1kHz. 3A input bias current 100dB typical CMRR The ISL28191 is available in the space-saving 6 Ld UTDFN (1.6mmx1.6mm) and 6 Ld SOT-23 packages. The ISL28291 is 3V to 5.5V single supply voltage range available in the 8 Ld SOIC, 10 Ld 1.8mmx1.4mm UTQFN and Rail-to-rail output 10 Ld MSOP packages. All devices are guaranteed over -40C to +125C. Ground Sensing Enable pin (not available in the 8 Ld SOIC package option) Ordering Information Pb-free (RoHS compliant) PART NUMBER PART PACKAGE PKG. (Note 5) MARKING (Pb-free) DWG. Applications ISL28191FHZ-T7 (Notes 1, 2) GABJ 6 Ld SOT-23 P6.064A Low noise signal processing (Note 4) Low noise microphones/preamplifiers ISL28191FRUZ-T7 (Notes 1, 3) M8 6 Ld UTDFN L6.1.6x1.6A ADC buffers ISL28291FUZ (Note 2) 8291Z 10 Ld MSOP M10.118A DAC output amplifiers ISL28291FUZ-T7 (Notes 1, 2) 8291Z 10 Ld MSOP M10.118A ISL28291FBZ (Note 2) 28291 FBZ 8 Ld SOIC M8.15E Digital scales ISL28291FBZ-T7 (Notes 1, 2) 28291 FBZ 8 Ld SOIC M8.15E Strain gauges/sensor amplifiers ISL28291FRUZ-T7 (Notes 1, 3) F 10 Ld UTQFN L10.1.8x1.4A Radio systems ISL28191EVAL1Z Evaluation Board Portable equipment ISL28291EVAL1Z Evaluation Board Infrared detectors NOTES: 1. Please refer to TB347 for details on reel specifications. Related Literature 2. These Intersil Pb-free plastic packaged products employ special Pb- AN1343: ISL2829xEVAL1Z, ISL5529xEVAL1Z Evaluation free material sets, molding compounds/die attach materials, and Board Users Guide 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb- free requirements of IPC/JEDEC J STD-020. 3. These Intersil Pb-free plastic packaged products employ special Pb- free material sets molding compounds/die attach materials and NiPdAu plate - e4 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 4. The part marking is located on the bottom of the part. 5. For Moisture Sensitivity Level (MSL), please see device information page for ISL28191, ISL28291. For more information on MSL please see techbrief TB363. FN6156 Rev 10.00 Page 1 of 18 July 22, 2014-+ ISL28191, ISL28291 Pin Configurations ISL28191 ISL28191 (6 LD SOT-23) (6 LD 1.6X1.6X0.5 UTDFN) TOP VIEW TOP VIEW OUT 1 6 V + OUT 1 6 V+ V- 2 5 EN IN- 2 5 EN + - IN+ 3 4 IN- IN+ 3 4 V- ISL28291 ISL28291 (8 LD SOIC) (10 LD MSOP) TOP VIEW TOP VIEW OUT A 1 8 V+ OUT A 1 10 V+ IN- A 2 7 OUT B IN- A 2 9 OUT B - - + + IN+ A 3 6 IN- B IN+ A 3 8 IN- B - - + + V- 4 5 IN+ B V- 4 77 IN+ B EN A 5 6 EN B ISL28291 (10 LD UTQFN) TOP VIEW 8 10 9 IN- B 1 7 IN- A - - + + 2 6 IN+ B IN+ A 3 4 5 FN6156 Rev 10.00 Page 2 of 18 July 22, 2014 OUT A V- EN A V+ EN B OUT B