Datasheet LTC6419 (Analog Devices) - 5

LTC6419
ELECTRICAL CHARACTERISTICS The
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denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. V+ = V+A = V+B = 5V, V– = 0V, VCM = VICM = VOCMA = VOCMB = 1.25V, VSHDNA = VSHDNB = open. VS is defined as (V+ – V–). VOUTCM is defined as (V+OUT + V–OUT)/2. VICM is defined as (V+IN + V–IN)/2. VOUTDIFF is defined as (V+OUT – V–OUT). SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
IMD3 3rd Order IMD at 25MHz VOUTDIFF = 1VP-P per Tone, RI = RF = 150Ω, –103 dBc f1 = 24.9MHz, f2 = 25.1MHz RLOAD = 400Ω 3rd Order IMD at 100MHz VOUTDIFF = 1VP-P per Tone, RI = RF = 150Ω, –87 dBc f1 = 99.9MHz, f2 = 100.1MHz RLOAD = 400Ω 3rd Order IMD at 140MHz VOUTDIFF = 1VP-P per Tone, RI = RF = 150Ω, –77 dBc f1 = 139.9MHz, f2 = 140.1MHz RLOAD = 400Ω tS Settling Time VOUTDIFF = 2VP-P Step, RI = RF = 150Ω, RLOAD = 400Ω 1% Settling 1.9 ns
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 (+INA/–INA or +INB/–INB) to the Maximum Rating condition for extended periods may affect device change in differential input referred offset voltage. Output CMRR is defined reliability and lifetime. as the ratio of the change in the voltage at the VOCMA or VOCMB pins to the
Note 2:
Input pins (+INA, –INA, +INB, –INB, V change in differential input referred offset voltage. This specification is OCMA, VOCMB, SHDNA, SHDNB) are protected by steering diodes to either supply. If the inputs strongly dependent on feedback ratio matching between the two outputs should exceed either supply voltage, the input current should be limited and their respective inputs and it is difficult to measure actual amplifier to less than 10mA. In addition, the inputs (+INA/–INA or +INB/–INB) are performance (See Effects of Resistor Pair Mismatch in the Applications protected by a pair of back-to-back diodes. If the differential input voltage Information section of this data sheet). For a better indicator of actual exceeds 1.4V, the input current should be limited to less than 10mA. amplifier performance independent of feedback component matching,
Note 3:
A heat sink may be required to keep the junction temperature below refer to the PSRR specification. the absolute maximum rating when the output is shorted indefinitely.
Note 9:
Differential power supply rejection (PSRR) is defined as the ratio
Note 4:
The LTC6419I is guaranteed functional over the temperature of the change in supply voltage to the change in differential input referred range of –40°C to 85°C. The LTC6419H is guaranteed functional over the offset voltage. Common mode power supply rejection (PSRRCM) is temperature range of –40°C to 125°C. defined as the ratio of the change in supply voltage to the change in the output common mode offset voltage.
Note 5:
The LTC6419I is guaranteed to meet specified performance from –40°C to 85°C. The LTC6419H is guaranteed to meet specified
Note 10:
Supply voltage range is guaranteed by power supply rejection performance from –40°C to 125°C. ratio test.
Note 6:
Input bias current is defined as the average of the input currents
Note 11:
Extended operation with the output shorted may cause the flowing into the inputs (–INA/+INA or –INB/+INB). Input offset current is junction temperature to exceed the 150°C limit. defined as the difference between the input currents (I + – OS = IB – IB ).
Note 12:
Channel separation (the inverse of crosstalk) is measured by
Note 7:
Input common mode range is tested by testing at both V driving a signal into one input, while terminating the other input. Channel ICM = 1.25V and at the Electrical Characteristics table limits to verify that the differential separation is the ratio of the resulting output signal at the driven channel offset (V to the channel that is not driven. OSDIFF) and the common mode offset (VOSCM) have not deviated by more than ±1mV and ±2mV respectively from the VICM = 1.25V case.
Note 13:
The LTC6419 is capable of producing peak output currents in The voltage range for the output common mode range is tested by excess of 50mA. Current density limitations within the IC require the applying a voltage on the V continuous RMS current supplied by the output (sourcing or sinking) OCM pin and testing at both VOCM = 1.25V and at the Electrical Characteristics table limits to verify that the common over the operating lifetime of the part be limited to under 50mA (Absolute mode offset (V Maximum). Proper heat sinking may be required to keep the junction OSCM) has not deviated by more than ±6mV from the V temperature below the absolute maximum rating. OCM = 1.25V case. 6419fa For more information www.linear.com/LTC6419 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Typical Performance Characteristics Pin Functions Applications Information Typical Applications Typical Applications Related Parts