ISL28127_1012

Precision Single and Dual Low Noise Operational Amplifiers ISL28127, ISL28227 The ISL28127 and ISL28227 are very high precision amplifiers featuring very low noise, low offset voltage, low input bias current and low temperature drift making them the ideal choice for applications requiring both high DC accuracy and AC performance. The combination of precision, low noise, and small footprint provides the user with outstanding value and flexibility relative to similar competitive parts. Applications for these amplifiers include precision active filters, medical and analytical instrumentation, precision power supply controls, and industrial controls. The ISL28127 single and ISL28227 dual are available in an 8 Ld SOIC, TDFN and MSOP packages. All devices are offered in standard pin configurations and operate over the extended temperature range to -40°C to +125°C. Features • Very Low Voltage Noise . . . . . . . . . . . . . . . . . . . . . . . .2.5nV/Hz • Low Input Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70µV, Max. • Superb Offset Drift. . . . . . . . . . . . . . . . . . . . . . 0.5µV/°C, Max. • Input Bias Current . . . . . . . . . . . . . . . . . . . . . . . . . . 10nA, Max. • Wide Supply Range . . . . . . . . . . . . . . . . . . . . . . . . .4.5V to 40V • Gain-bandwidth Product . . . . . . . . . 10MHz Unity Gain Stable • No Phase Reversal Applications • Precision Instruments • Medical Instrumentation • Industrial Controls • Active Filter Blocks • Data Acquisition • Power Supply Control Related Literature • AN1508: ISL281x7SOICEVAL1Z Evaluation Board User’s Guide • AN1509: ISL282x7SOICEVAL1Z Evaluation Board User’s Guide INPUT NOISE VOLTAGE (nV/√Hz) C1 1.5nF 100 VS = ±19V AV = 1 V+ VIN R1 95.3 R2 OUTPUT 10 + 232 68.3nF C2 V- Sallen-Key Low Pass Filter (1MHz) 1 0.1 1 10 100 1k 10k 100k FREQUENCY (Hz) FIGURE 1. TYPICAL APPLICATION FIGURE 2. INPUT NOISE VOLTAGE SPECTRAL DENSITY December 16, 2010 FN6633.6 1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas Inc. 2009, 2010. All Rights Reserved Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners. ISL28127, ISL28227 Ordering Information . PART NUMBER (Notes 1, 2, 3) ISL28127FBZ ISL28127FRTBZ ISL28127FRTZ ISL28127FUBZ ISL28127FUZ ISL28227FBZ ISL28227FRTBZ ISL28227FRTZ ISL28227FUBZ ISL28227FUZ ISL28127SOICEVAL1Z ISL28127MSOPEVAL1Z ISL28227SOICEVAL2Z PART MARKING 28127 FBZ 8127 -C 8127 8127Z 8127Z -C 28227 FBZ 8227 -C 8227 8227Z 8227Z -C Evaluation Board Evaluation Board Evaluation Board VOS (MAX) (µV) 70 75 (B Grade) 150 (C Grade) 70 (B Grade) 150 (C Grade) 75 75 (B Grade) 150 (C Grade) 75 (B Grade) 150 (C Grade) 8 Ld SOIC PACKAGE (Pb-Free) M8.15E L8.3x3A L8.3x3A M8.118 M8.118 M8.15E L8.3x3A L8.3x3A M8.118 M8.118 PKG. DWG. # 8 Ld TDFN 8 Ld TDFN 8 Ld MSOP 8 Ld MSOP 8 Ld SOIC 8 Ld TDFN 8 Ld TDFN 8 Ld MSOP 8 Ld MSOP 1. Add “-T*” suffix for tape and reel. Please refer to TB347 for details on reel specifications. 2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pbfree 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. For Moisture Sensitivity Level (MSL), please see device information page for ISL28127, ISL28227. For more information on MSL please see techbrief TB363. 2 FN6633.6 December 16, 2010 ISL28127, ISL28227 Pin Configurations ISL28127 (8 LD SOIC, MSOP) TOP VIEW NC -IN_A +IN_A V1 2 3 4 -+ 8 7 6 5 NC V+ VOUTA NC VOUTA -IN_A +IN_A V- ISL28227 (8 LD SOIC, MSOP) TOP VIEW 1 2 3 4 -+ +8 7 6 5 V+ VOUTB -IN_B +IN_B ISL28127 (8 LD TDFN) TOP VIEW NC 1 -IN 2 +IN 3 V- 4 PD -+ 8 NC 7 V+ 6 VOUT 5 NC VOUTA 1 -IN_A 2 +IN_A 3 V- 4 ISL28227 (8 LD TDFN) TOP VIEW 8 V+ -+ PD +7 VOUTB 6 -IN_B 5 +IN_B Pin Descriptions ISL28127 (8 LD SOIC, 8 LD MSOP) ISL28127 (8 LD TDFN) 3 3 4 4 3 4 5 2 6 6 7 7 6 2 1, 5, 8 1, 5, 8 PD 7 8 1 2 7 8 1 2 6 3 4 5 ISL28227 (8 LD SOIC, 8 LD MSOP) ISL28227 (8 LD TDFN) PIN NAME +IN +IN_A V+IN_B -IN -IN_B VOUT VOUTB V+ VOUTA -IN_A NC PD EQUIVALENT CIRCUIT Circuit 1 Circuit 1 Circuit 3 Circuit 1 Circuit 1 Circuit 1 Circuit 2 Circuit 2 Circuit 3 Circuit 2 Circuit 1 DESCRIPTION Amplifier non-inverting input Amplifier A non-inverting input Negative power supply Amplifier B non-inverting input Amplifier inverting input Amplifier B inverting input Amplifier output Amplifier B output Positive power supply Amplifier A output Amplifier A inverting input Not Connected – This pin is not electrically connected internally. Thermal Pad. Pad should be connected to lowest potential source in the circuit. V+ CAPACITIVELY TRI GGERED ESD CLAMP VCIRCUIT 3 V+ ININ+ V+ OUT V- V- CIRCUIT 1 CIRCUIT 2 3 FN6633.6 December 16, 2010 ISL28127, ISL28227 Absolute Maximum Ratings Maximum Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42V Maximum Differential Input Current . . . . . . . . . . . . . . . . . . . . . . . . . . 20mA Maximum Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.5V Min/Max Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . V- - 0.5V to V+ + 0.5V Max/Min Input Current for Input Voltage >V+ or