Datasheet LTC6406 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | 3GHz, Low Noise, Rail-to-Rail Input Differential Amplifier/Driver |
| Pages / Page | 24 / 5 — ELECTRICAL CHARACTERISTICS. Note 1:. Note 8:. Note 2:. Note 3:. Note 4:. … |
| File Format / Size | PDF / 333 Kb |
| Document Language | English |
ELECTRICAL CHARACTERISTICS. Note 1:. Note 8:. Note 2:. Note 3:. Note 4:. Note 9:. Note 5:. Note 10:. Note 6:. Note 11:. Note 7:. Note 12:
Model Line for this Datasheet
Text Version of Document
LTC6406
ELECTRICAL CHARACTERISTICS Note 1:
Stresses beyond those listed under Absolute Maximum Ratings both VOCM = 1.25V and at the Electrical Characteristics table limits to verify may cause permanent damage to the device. Exposure to any Absolute that the common mode offset (VOSCM) has not deviated by more than Maximum Rating condition for extended periods may affect device ±10mV from the VOCM = 1.25V case. reliability and lifetime.
Note 8:
Input CMRR is defi ned as the ratio of the change in the input
Note 2:
Input pins (+IN, –IN, VOCM, SHDN and VTIP) are protected by common mode voltage at the pins +IN or –IN to the change in differential steering diodes to either supply. If the inputs should exceed either supply input referred voltage offset. Output CMRR is defi ned as the ratio of voltage, the input current should be limited to less than 10mA. In addition, the change in the voltage at the VOCM pin to the change in differential the inputs +IN, –IN are protected by a pair of back-to-back diodes. If the input referred voltage offset. This specifi cation is strongly dependent on differential input voltage exceeds 1.4V, the input current should be limited feedback ratio matching between the two outputs and their respective to less than 10mA. inputs, and it is diffi cult to measure actual amplifi er performance (see the
Note 3:
A heat sink may be required to keep the junction temperature Effects of Resistor Pair Mismatch in the Applications Information section below the Absolute Maximum Rating when the output is shorted of this data sheet). For a better indicator of actual amplifi er performance indefi nitely. Long-term application of output currents in excess of the independent of feedback component matching, refer to the PSRR absolute maximum ratings may impair the life of the device. specifi cation.
Note 4:
The LTC6406C/LTC6406I are guaranteed functional over the
Note 9:
Differential power supply rejection (PSRR) is defi ned as the ratio operating temperature range –40°C to 85°C. of the change in supply voltage to the change in differential input referred
Note 5:
The LTC6406C is guaranteed to meet specifi ed performance from voltage offset. Common mode power supply rejection (PSRRCM) is 0°C to 70°C. The LTC6406C is designed, characterized, and expected defi ned as the ratio of the change in supply voltage to the change in the to meet specifi ed performance from –40°C to 85°C but is not tested or common mode offset, VOUTCM – VOCM. QA sampled at these temperatures. The LTC6406I is guaranteed to meet
Note 10:
Extended operation with the output shorted may cause the specifi ed performance from –40°C to 85°C. junction temperature to exceed the 150°C limit.
Note 6:
Input bias current is defi ned as the average of the input currents
Note 11:
Because the LTC6406 is a feedback amplifi er with low output fl owing into the inputs (–IN, and +IN). Input offset current is defi ned as the impedance, a resistive load is not required when driving an ADC. difference between the input currents (I + – OS = IB – IB ). Therefore, typical output power can be very small in many applications. In
Note 7:
Input common mode range is tested using the test circuit of order to compare the LTC6406 with RF style amplifi ers that require 50Ω Figure 1 by taking three measurements of differential gain with a ±1V DC load, the output voltage swing is converted to dBm as if the outputs were differential output with V driving a 50Ω load. For example, 2V ICM = 0V; VICM = 1.25V; VICM = 3V, verifying that P-P output swing is equal to 10dBm the differential gain has not deviated from the V using this convention. ICM = 1.25V case by more than 0.5%, and that the common mode offset (VOSCM) has not deviated
Note 12:
Includes offset/drift induced by feedback resistors mismatch. See from the common mode offset at VICM = 1.25V by more than ±20mV. the Applications Information section for more details. The voltage range for the output common mode range is tested using the
Note 13:
QFN package only. Refer to data sheet curves for MSOP package test circuit of Figure 1 by applying a voltage on the VOCM pin and testing at numbers.
TYPICAL PERFORMANCE CHARACTERISTICS Differential Input Referred Differential Input Referred Offset Offset Voltage vs Input Common Common Mode Offset Voltage Voltage vs Temperature Mode Voltage vs Temperature
1.2 2.0 7 TA = –40°C TA = 0°C 1.0 1.5 T 6 A = 25°C T 1.0 A = 70°C 0.8 V TA = 85°C TAGE (mV) 5 (mV) S = 3V V (mV) OS OCM = 1.25V OS 0.5 0.6 VICM = 1.25V 4 RI = RF = 150Ω 0 FIVE TYPICAL UNITS 0.4 3 –0.5 0.2 2 DIFFERENTIAL V V DIFFERENTIAL V S = 3V –1.0 VOCM = 1.25V VS = 3V 0 RI = RF = 150Ω VOCM = 1.25V –1.5 1 0.1% FEEDBACK NETWORK RESISTORS COMMON MODE OFFSET VOL VICM = 1.25V TYPICAL UNIT FIVE TYPICAL UNITS –0.2 –2.0 0 –50 –25 0 25 50 75 100 0 0.5 1.0 1.5 2.0 2.5 3.0 –50 –25 0 25 50 75 100 TEMPERATURE (°C) INPUT COMMON MODE VOLTAGE (V) TEMPERATURE (°C) 6406 G01 6406 G02 6406 G03 6406fc 5
ELECTRICAL CHARACTERISTICS Note 1:
Stresses beyond those listed under Absolute Maximum Ratings both VOCM = 1.25V and at the Electrical Characteristics table limits to verify may cause permanent damage to the device. Exposure to any Absolute that the common mode offset (VOSCM) has not deviated by more than Maximum Rating condition for extended periods may affect device ±10mV from the VOCM = 1.25V case. reliability and lifetime.
Note 8:
Input CMRR is defi ned as the ratio of the change in the input
Note 2:
Input pins (+IN, –IN, VOCM, SHDN and VTIP) are protected by common mode voltage at the pins +IN or –IN to the change in differential steering diodes to either supply. If the inputs should exceed either supply input referred voltage offset. Output CMRR is defi ned as the ratio of voltage, the input current should be limited to less than 10mA. In addition, the change in the voltage at the VOCM pin to the change in differential the inputs +IN, –IN are protected by a pair of back-to-back diodes. If the input referred voltage offset. This specifi cation is strongly dependent on differential input voltage exceeds 1.4V, the input current should be limited feedback ratio matching between the two outputs and their respective to less than 10mA. inputs, and it is diffi cult to measure actual amplifi er performance (see the
Note 3:
A heat sink may be required to keep the junction temperature Effects of Resistor Pair Mismatch in the Applications Information section below the Absolute Maximum Rating when the output is shorted of this data sheet). For a better indicator of actual amplifi er performance indefi nitely. Long-term application of output currents in excess of the independent of feedback component matching, refer to the PSRR absolute maximum ratings may impair the life of the device. specifi cation.
Note 4:
The LTC6406C/LTC6406I are guaranteed functional over the
Note 9:
Differential power supply rejection (PSRR) is defi ned as the ratio operating temperature range –40°C to 85°C. of the change in supply voltage to the change in differential input referred
Note 5:
The LTC6406C is guaranteed to meet specifi ed performance from voltage offset. Common mode power supply rejection (PSRRCM) is 0°C to 70°C. The LTC6406C is designed, characterized, and expected defi ned as the ratio of the change in supply voltage to the change in the to meet specifi ed performance from –40°C to 85°C but is not tested or common mode offset, VOUTCM – VOCM. QA sampled at these temperatures. The LTC6406I is guaranteed to meet
Note 10:
Extended operation with the output shorted may cause the specifi ed performance from –40°C to 85°C. junction temperature to exceed the 150°C limit.
Note 6:
Input bias current is defi ned as the average of the input currents
Note 11:
Because the LTC6406 is a feedback amplifi er with low output fl owing into the inputs (–IN, and +IN). Input offset current is defi ned as the impedance, a resistive load is not required when driving an ADC. difference between the input currents (I + – OS = IB – IB ). Therefore, typical output power can be very small in many applications. In
Note 7:
Input common mode range is tested using the test circuit of order to compare the LTC6406 with RF style amplifi ers that require 50Ω Figure 1 by taking three measurements of differential gain with a ±1V DC load, the output voltage swing is converted to dBm as if the outputs were differential output with V driving a 50Ω load. For example, 2V ICM = 0V; VICM = 1.25V; VICM = 3V, verifying that P-P output swing is equal to 10dBm the differential gain has not deviated from the V using this convention. ICM = 1.25V case by more than 0.5%, and that the common mode offset (VOSCM) has not deviated
Note 12:
Includes offset/drift induced by feedback resistors mismatch. See from the common mode offset at VICM = 1.25V by more than ±20mV. the Applications Information section for more details. The voltage range for the output common mode range is tested using the
Note 13:
QFN package only. Refer to data sheet curves for MSOP package test circuit of Figure 1 by applying a voltage on the VOCM pin and testing at numbers.
TYPICAL PERFORMANCE CHARACTERISTICS Differential Input Referred Differential Input Referred Offset Offset Voltage vs Input Common Common Mode Offset Voltage Voltage vs Temperature Mode Voltage vs Temperature
1.2 2.0 7 TA = –40°C TA = 0°C 1.0 1.5 T 6 A = 25°C T 1.0 A = 70°C 0.8 V TA = 85°C TAGE (mV) 5 (mV) S = 3V V (mV) OS OCM = 1.25V OS 0.5 0.6 VICM = 1.25V 4 RI = RF = 150Ω 0 FIVE TYPICAL UNITS 0.4 3 –0.5 0.2 2 DIFFERENTIAL V V DIFFERENTIAL V S = 3V –1.0 VOCM = 1.25V VS = 3V 0 RI = RF = 150Ω VOCM = 1.25V –1.5 1 0.1% FEEDBACK NETWORK RESISTORS COMMON MODE OFFSET VOL VICM = 1.25V TYPICAL UNIT FIVE TYPICAL UNITS –0.2 –2.0 0 –50 –25 0 25 50 75 100 0 0.5 1.0 1.5 2.0 2.5 3.0 –50 –25 0 25 50 75 100 TEMPERATURE (°C) INPUT COMMON MODE VOLTAGE (V) TEMPERATURE (°C) 6406 G01 6406 G02 6406 G03 6406fc 5
