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LTC6405IMS8E-TRPBF Datasheet(PDF) 5 Page - Linear Technology |
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LTC6405IMS8E-TRPBF Datasheet(HTML) 5 Page - Linear Technology |
5 / 24 page LTC6405 5 6405fa Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: Input pins (+IN, –IN, VOCM, SHDN and VTIP) are protected by steering diodes to either supply. If the inputs should exceed either supply voltage, the input current should be limited to less than 10mA. In addition, the inputs +IN, –IN are protected by a pair of back-to-back diodes. If the differential input voltage exceeds 1.4V, the input current should be limited to less than 10mA. Note 3: A heat sink may be required to keep the junction temperature below the Absolute Maximum Rating when the output is shorted indefinitely. Note 4: The LTC6405C/LTC6405I are guaranteed functional over the operating temperature range –40°C to 85°C. Note 5: The LTC6405C is guaranteed to meet specified performance from 0°C to 70°C. The LTC6405C is designed, characterized, and expected to meet specified performance from –40°C to 85°C but is not tested or QA sampled at these temperatures. The LTC6405I is guaranteed to meet specified performance from –40°C to 85°C. Note 6: Input bias current is defined as the average of the input currents flowing into the inputs (–IN, and +IN). Input Offset current is defined as the difference between the input currents (IOS = IB+ – IB–). Note 7: Input common mode range is tested using the test circuit of Figure 1 by taking 3 measurements of differential gain with a ±1VDC differential output with VICM = 0V; VICM = 2.5V; VICM = 5V, verifying that the differential gain has not deviated from the VICM = 2.5V case by more than 0.5%, and that the common mode offset (VOSCM) has not deviated from the common mode offset at VICM = 2.5V by more than ±35mV. The voltage range for the output common mode range is tested using the test circuit of Figure 1 by applying a voltage on the VOCM pin and testing at both VOCM = 2.5V and at the Electrical Characteristics table limits to verify that the common mode offset (VOSCM) has not deviated by more than ±20mV from the VOCM = 2.5V case. Note 8: Input CMRR is defined as the ratio of the change in the input common mode voltage at the pins +IN or –IN to the change in differential input referred voltage offset. Output CMRR is defined as the ratio of the change in the voltage at the VOCM pin to the change in differential input referred voltage offset. This specification is strongly dependent on feedback ratio matching between the two outputs and their respective inputs, and it is difficult to measure actual amplifier performance. (See the “Effects of Resistor Pair Mismatch” in the Applications Information section of this data sheet.) For a better indicator of actual amplifier performance independent of feedback component matching, refer to the PSRR specification. Note 9: Differential Power Supply Rejection (PSRR) is defined as the ratio of the change in supply voltage to the change in differential input referred voltage offset. Common mode power supply rejection (PSRRCM) is defined as the ratio of the change in supply voltage to the change in the common mode offset, VOUTCM – VOCM. Note 10: Extended operation with the output shorted may cause the junction temperature to exceed the 150°C limit. Note 11: Because the LTC6405 is a feedback amplifier with low output impedance, a resistive load is not required when driving an ADC. Therefore, typical output power can be very small in many applications. In order to compare the LTC6405 with “RF style” amplifiers that require 50Ω load, the output voltage swing is converted to dBm as if the outputs were driving a 50Ω load. For example, 2VP-P output swing is equal to 10dBm using this convention. Note 12: Includes offset/drift induced by feedback resistors mismatch. See the Applications Information section for more details. Note 13: QFN package only—refer to datasheet curves for MSOP package numbers. ELECTRICAL CHARACTERISTICS |
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