Datasheet LTC6405 (Analog Devices) - 5

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