MAX4460/MAX4461/MAX4462 19-2279 Rev 4 3/06 SOT23, 3V/5V, Single-Supply, Rail-to-Rail Instrumentation Amplifiers General Description Features Tiny 6-Pin SOT23 and TDFN Packages The MAX4460/MAX4461/MAX4462 are instrumentation amplifiers with precision specifications, low-power con- Input Negative Rail Sensing sumption, and excellent gain-bandwidth product. 1pA (typ) Input Bias Current Proprietary design techniques allow ground-sensing 100V Input Offset Voltage capability combined with ultra-low input current and increased common-mode rejection performance. These Rail-to-Rail Output rail-to-rail output instrumentation amplifiers are offered in 2.85V to 5.25V Single Supply fixed or adjustable gains and the option for either a shut- 700A Supply Current down mode or a pin to set the output voltage relative to 0.1% Gain Error an external reference (see the Ordering Information and Selector Guide). 2.5MHz Gain-Bandwidth Product The MAX4460 has an adjustable gain and uses ground 18nV/Hz Input-Referred Noise as its reference voltage. The MAX4461 is offered in fixed gains of 1, 10, and 100, uses ground as its reference volt- Ordering Information age, and has a logic-controlled shutdown input. The MAX4462 is offered in fixed gains of 1, 10, and 100 and TEMP PIN- TOP has a reference input pin (REF). REF sets the output volt- PART RANGE PACKAGE MARK age for zero differential input to allow bipolar signals in MAX4460ETT+T -40C to +85C 6 TDFN-EP* +ANI single-supply applications. MAX4460EUT-T -40C to +85C 6 SOT23-6 AASS The MAX4460/MAX4461/MAX4462 have high-impedance inputs optimized for small-signal differential voltages. The MAX4460ESA -40C to +85C 8 SO MAX4461/MAX4462 are factory trimmed to gains of 1, 10, MAX4461UETT+T -40C to +85C 6 TDFN-EP* +ANJ or 100 (suffixed U, T, and H) with 0.1% accuracy. The MAX4461UEUT-T -40C to +85C 6 SOT23-6 AAST typical offset of the MAX4460/MAX4461/MAX4462 is MAX4461UESA -40C to +85C 8 SO 100V. All devices have a gain-bandwidth product of 2.5MHz. MAX4461TETT+T -40C to +85C 6 TDFN-EP* +ANK MAX4461TEUT-T -40C to +85C 6 SOT23-6 AASU These amplifiers operate with a single-supply voltage from 2.85V to 5.25V and with a quiescent current of only MAX4461TESA -40C to +85C 8 SO 700A (less than 1A in shutdown for the MAX4461). The MAX4461HETT+T -40C to +85C 6 TDFN-EP* +ANL MAX4462 can also be operated with dual supplies. MAX4461HEUT-T -40C to +85C 6 SOT23-6 AASV Smaller than most competitors, the MAX4460/ MAX4461HESA -40C to +85C 8 SO MAX4461/MAX4462 are available in space-saving 6-pin SOT23 and TDFN packages. +Denotes lead-free package. Applications *EP = Exposed paddle. Industrial Process Control Ordering Information continued at end of data sheet. Strain-Gauge Amplifiers Typical Application Circuits Transducer Interface V Precision Low-Side Current Sense CC Low-Noise Microphone Preamplifier Differential Voltage Amplification V + V CM 3 5 Battery-Powered Medical Equipment MAX4462 1 OUT 6 V - V 4 CM Selector Guide appears at end of data sheet. 2 REF Pin Configurations appear at end of data sheet. Typical Application Circuits continued at end of data sheet. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.SOT23, 3V/5V, Single-Supply, Rail-to-Rail Instrumentation Amplifiers ABSOLUTE MAXIMUM RATINGS Supply Voltage (V to V ) ...................................-0.3V to +6V Operating Temperature Range ...........................-40C to +85C DD SS All Other Pins ...................................(V - 0.3V) to (V + 0.3V) Junction Temperature......................................................+150C SS DD Output Short-Circuit Duration to Either Supply.........................1s Storage Temperature Range .............................-65C to +150C Continuous Power Dissipation (T = +70C) Lead Temperature (soldering, 10s)....................................300C A 6-Pin SOT23 (derate 8.7mW/C above +70C)............695mW 6-Pin TDFN-EP (derate 18.2mW/C above +70C)....1454mW 8-Pin SO (derate 5.9mW/C above +70C)..................470mW Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICSMAX4460/MAX4461 (V = 5V, V = 0V, V = V - V = 50mV to 100mV for G = 1, 20mV to 100mV for G = 10, 2mV to 48mV for G =100, DD CM DIFF IN+ IN- MAX4460 is configured for G = 10, R = 200k to GND, T = +25C, unless otherwise noted.) L A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage V Guaranteed by PSRR test 2.85 5.25 V DD V = 5V, V = 0V 0.80 1.1 DD DIFF Supply Current mA V = 3V, V = 0V 0.68 0.9 DD DIFF Shutdown Supply Current MAX4461, SHDN = GND V = 5V 0.1 1 A DD MAX4460ESA 50 425 Input Offset Voltage (Note 1) V V MAX4461ESA 50 300 OS MAX446 EUT/MAX446 ETT 100 600 Differential mode 2 Input Resistance R V = V /2 G IN CM DD Common mode 2 V - DD Input Common-Mode Range V Guaranteed by CMRR test -0.1 V CM 1.7 Input Common-Mode CMRR V = -0.1V to (V - 1.7V) 90 120 dB CM DD Rejection Ratio Power-Supply Rejection Ratio PSRR V = 2.85V to 5.25V 80 100 dB DD Input Bias Current I (Note 2) 1 100 pA B FB Input Current MAX4460 (Note 2) 1 100 pA 0.7 X V MAX4461 IH V DD SHDN Logic Levels V 0.3 X V MAX4461 IL V DD SHDN Input Current MAX4461, V = 0V or V (Note 2) 1 100 pA SHDN DD f = 10kHz 18 Input Voltage Noise e nV/Hz n f = 1kHz 38 R = 200k 1 2.5 L V V - V (Note 3) OH DD OH R = 20k 35 L Output Voltage Swing mV R = 200k 0 0.2 L V OL R = 20k 0 0.2 L Short-Circuit Current I (Note 4) 150 mA SC 2 MAX4460/MAX4461/MAX4462