Datasheet LT6658 (Analog Devices) - 7
| Manufacturer | Analog Devices |
| Description | Precision Dual Output, High Current, Low Noise, Voltage Reference |
| Pages / Page | 44 / 7 — ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply … |
| Revision | C |
| File Format / Size | PDF / 4.2 Mb |
| Document Language | English |
ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply over the full operating temperature
Model Line for this Datasheet
- LT6658AHDE-3#TRPBF LT6658AHDE-3.3#TRPBF LT6658AHDE-5#TRPBF LT6658AHMSE-1.2#PBF LT6658AHMSE-1.2#TRPBF LT6658AHMSE-1.8#PBF LT6658AHMSE-1.8#TRPBF LT6658AHMSE-2.5#PBF LT6658AHMSE-2.5#TRPBF LT6658AHMSE-3#PBF LT6658AHMSE-3#TRPBF LT6658AHMSE-3.3#PBF LT6658AHMSE-3.3#TRPBF LT6658AHMSE-5#PBF LT6658AHMSE-5#TRPBF LT6658AIMSE-1.2#PBF LT6658AIMSE-1.2#TRPBF LT6658AIMSE-2.5#PBF LT6658AIMSE-2.5#TRPBF LT6658AIMSE-3#PBF LT6658AIMSE-3#TRPBF LT6658AIMSE-3.3#PBF LT6658AIMSE-3.3#TRPBF LT6658AIMSE-5#PBF LT6658AIMSE-5#TRPBF LT6658BHDE-2.5#TRPBF LT6658BHDE-3#TRPBF LT6658BHDE-3.3#TRPBF LT6658BHDE-5#TRPBF LT6658BHMSE-1.2#PBF LT6658BHMSE-1.2#TRPBF LT6658BHMSE-1.8#PBF LT6658BHMSE-1.8#TRPBF LT6658BHMSE-2.5#PBF LT6658BHMSE-2.5#TRPBF LT6658BHMSE-3#PBF LT6658BHMSE-3#TRPBF LT6658BHMSE-3.3#PBF LT6658BHMSE-3.3#TRPBF LT6658BHMSE-5#PBF LT6658BIMSE-1.2#PBF LT6658BIMSE-1.2#TRPBF LT6658BIMSE-1.8#PBF LT6658BIMSE-1.8#TRPBF LT6658BIMSE-2.5#PBF LT6658BIMSE-2.5#TRPBF LT6658BIMSE-3#PBF LT6658BIMSE-3#TRPBF LT6658BIMSE-3.3#PBF LT6658BIMSE-3.3#TRPBF LT6658BIMSE-5#PBF LT6658BIMSE-5#TRPBF
Text Version of Document
link to page 23 link to page 8 link to page 8 LT6658
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = VIN1 = VIN2 = VOUT1,2_F + 2.5V, COUT1,2 = 1.3µF, ILOAD = 0, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
Output Short-Circuit Current Short VOUT1_F to 400mV (Note 11) l 170 270 mA Short VOUT2_F to 400mV (Note 11) l 65 120 mA Output Noise Voltage (Note 7) 0.1Hz ≤ f ≤ 10Hz LT6658-1.2 0.8 ppmP–P LT6658-1.8 1.0 ppmP–P LT6658-2.5 1.5 ppmP–P LT6658-3 1.6 ppmP–P LT6658-3.3 1.7 ppmP–P LT6658-5 2.2 ppmP–P 10Hz ≤ f ≤ 1kHz, COUT = 1µF, CNR = 10µF, ILOAD = Full Current (Note 10) 0.5 ppmRMS 10Hz ≤ f ≤ 1kHz, COUT = 1µF, CNR = OPEN, ILOAD = Full Current (Note 10) 2 ppmRMS Frequency = 10kHz, COUT1 = 1µF, CNR = 10µF, ILOAD = Full Current (Note 10) 8 nV/√Hz Output Voltage Tracking Tracking = Output 1 – Output 2 0.9 µV/°C VOUT1_S, VOUT2_S Pin Current Unity Gain 135 nA OD Threshold Voltage Logic High Input Voltage l 2 V Logic Low Input Voltage l 0.8 V OD Pin Current VOD = 0V l 30 45 μA VOD = 36V l 0.3 1.5 μA Ripple Rejection VIN1 = VOUT1 + 3V, VRIPPLE = 0.5VP–P, fRIPPLE = 120Hz, ILOAD = 150mA, 107 dB COUT1 = 1µF, CNR = 10µF VIN2 = VOUT2 + 3V, VRIPPLE = 0.5VP–P, fRIPPLE = 120Hz, ILOAD = 50mA, 107 dB COUT2 = 1µF, CNR = 10µF Turn-On Time 0.1% Settling, CLOAD = 1μF 160 μs Long Term Drift (Note 8) 120 ppm/√kHr Thermal Hysteresis (Note 9) ΔT = –40°C to 85°C 30 ppm ΔT = –40°C to 125°C 45 ppm
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings time is 10 seconds. RMS noise is measured on a spectrum analyzer in may cause permanent damage to the device. Exposure to any Absolute a shielded environment where the intrinsic noise of the instrument is Maximum Rating condition for extended periods may affect device removed to determine the actual noise of the device. reliability and lifetime.
Note 8:
Long-term stability typically has a logarithmic characteristic
Note 2:
Thermal hysteresis can occur during storage at extreme and therefore, changes after 1000 hours tend to be much smaller than temperatures. before that time. Total drift in the second thousand hours is normally less
Note 3:
The stated temperature is typical for soldering of the leads during than one third that of the first thousand hours with a continuing trend manual rework. For detailed IR reflow recommendations, refer to the toward reduced drift with time. Long-term stability will also be affected by Applications Information section. differential stresses between the IC and the board material created during
Note 4:
Temperature coefficient is measured by dividing the maximum board assembly. change in output voltage by the specified temperature range.
Note 9:
Hysteresis in output voltage is created by package stress that
Note 5:
Line and load regulation are measured on a pulse basis for differs depending on whether the IC was previously at a higher or specified input voltage or load current ranges. Output changes due to die lower temperature. Output voltage is always measured at 25°C, but temperature change must be taken into account separately. the IC is cycled to the hot or cold temperature limit before successive measurements. Hysteresis measures the maximum output change for the
Note 6:
VOUT2 load regulation specification is limited by practical averages of three hot or cold temperature cycles. For instruments that automated test resolution. Please refer to the Typical Performance are stored at well controlled temperatures (within 20 or 30 degrees of Characteristics section for more information regarding actual typical operational temperature), it’s usually not a dominant error source. Typical performance. hysteresis is the worst-case of 25°C to cold to 25°C or 25°C to hot to
Note 7:
Peak-to-peak noise is measured with a 1-pole highpass filter at 25°C, preconditioned by one thermal cycle. 0.1Hz and 2-pole lowpass filter at 10Hz. The unit is enclosed in a still-air
Note 10:
The full current for I environment to eliminate thermocouple effects on the leads. The test LOAD is 150mA and 50mA for Output 1 and Output 2, respectively.
Note 11:
When the output voltage is less than 450mV, the output current may foldback to less than the rated output current. Once the output is released, the rated output current will be available. Rev. C For more information www.analog.com 7 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Available Options Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = VIN1 = VIN2 = VOUT1,2_F + 2.5V, COUT1,2 = 1.3µF, ILOAD = 0, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
Output Short-Circuit Current Short VOUT1_F to 400mV (Note 11) l 170 270 mA Short VOUT2_F to 400mV (Note 11) l 65 120 mA Output Noise Voltage (Note 7) 0.1Hz ≤ f ≤ 10Hz LT6658-1.2 0.8 ppmP–P LT6658-1.8 1.0 ppmP–P LT6658-2.5 1.5 ppmP–P LT6658-3 1.6 ppmP–P LT6658-3.3 1.7 ppmP–P LT6658-5 2.2 ppmP–P 10Hz ≤ f ≤ 1kHz, COUT = 1µF, CNR = 10µF, ILOAD = Full Current (Note 10) 0.5 ppmRMS 10Hz ≤ f ≤ 1kHz, COUT = 1µF, CNR = OPEN, ILOAD = Full Current (Note 10) 2 ppmRMS Frequency = 10kHz, COUT1 = 1µF, CNR = 10µF, ILOAD = Full Current (Note 10) 8 nV/√Hz Output Voltage Tracking Tracking = Output 1 – Output 2 0.9 µV/°C VOUT1_S, VOUT2_S Pin Current Unity Gain 135 nA OD Threshold Voltage Logic High Input Voltage l 2 V Logic Low Input Voltage l 0.8 V OD Pin Current VOD = 0V l 30 45 μA VOD = 36V l 0.3 1.5 μA Ripple Rejection VIN1 = VOUT1 + 3V, VRIPPLE = 0.5VP–P, fRIPPLE = 120Hz, ILOAD = 150mA, 107 dB COUT1 = 1µF, CNR = 10µF VIN2 = VOUT2 + 3V, VRIPPLE = 0.5VP–P, fRIPPLE = 120Hz, ILOAD = 50mA, 107 dB COUT2 = 1µF, CNR = 10µF Turn-On Time 0.1% Settling, CLOAD = 1μF 160 μs Long Term Drift (Note 8) 120 ppm/√kHr Thermal Hysteresis (Note 9) ΔT = –40°C to 85°C 30 ppm ΔT = –40°C to 125°C 45 ppm
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings time is 10 seconds. RMS noise is measured on a spectrum analyzer in may cause permanent damage to the device. Exposure to any Absolute a shielded environment where the intrinsic noise of the instrument is Maximum Rating condition for extended periods may affect device removed to determine the actual noise of the device. reliability and lifetime.
Note 8:
Long-term stability typically has a logarithmic characteristic
Note 2:
Thermal hysteresis can occur during storage at extreme and therefore, changes after 1000 hours tend to be much smaller than temperatures. before that time. Total drift in the second thousand hours is normally less
Note 3:
The stated temperature is typical for soldering of the leads during than one third that of the first thousand hours with a continuing trend manual rework. For detailed IR reflow recommendations, refer to the toward reduced drift with time. Long-term stability will also be affected by Applications Information section. differential stresses between the IC and the board material created during
Note 4:
Temperature coefficient is measured by dividing the maximum board assembly. change in output voltage by the specified temperature range.
Note 9:
Hysteresis in output voltage is created by package stress that
Note 5:
Line and load regulation are measured on a pulse basis for differs depending on whether the IC was previously at a higher or specified input voltage or load current ranges. Output changes due to die lower temperature. Output voltage is always measured at 25°C, but temperature change must be taken into account separately. the IC is cycled to the hot or cold temperature limit before successive measurements. Hysteresis measures the maximum output change for the
Note 6:
VOUT2 load regulation specification is limited by practical averages of three hot or cold temperature cycles. For instruments that automated test resolution. Please refer to the Typical Performance are stored at well controlled temperatures (within 20 or 30 degrees of Characteristics section for more information regarding actual typical operational temperature), it’s usually not a dominant error source. Typical performance. hysteresis is the worst-case of 25°C to cold to 25°C or 25°C to hot to
Note 7:
Peak-to-peak noise is measured with a 1-pole highpass filter at 25°C, preconditioned by one thermal cycle. 0.1Hz and 2-pole lowpass filter at 10Hz. The unit is enclosed in a still-air
Note 10:
The full current for I environment to eliminate thermocouple effects on the leads. The test LOAD is 150mA and 50mA for Output 1 and Output 2, respectively.
Note 11:
When the output voltage is less than 450mV, the output current may foldback to less than the rated output current. Once the output is released, the rated output current will be available. Rev. C For more information www.analog.com 7 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Available Options Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
