Datasheet LT1970A (Analog Devices) - 4

LT1970A
elecTrical characTerisTics The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. See Test Circuit for standard test conditions. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Current Sense Bandwidth 2 MHz RCSF Resistance FILTER to SENSE– l 750 1000 1250 Ω
Logic I/O Characteristics
Logic Output Leakage ISRC, ISNK, TSD V = 15V l 1 µA Logic Low Output Level I = 5mA (Note 6) l 0.2 0.4 V Logic Output Current Limit 25 mA VENABLE Enable Logic Threshold l 0.8 1.9 2.5 V IENABLE Enable Pin Bias Current l –1 1 µA ISUPPLY Total Supply Current VCC, V+ and V–, VEE Connected l 7 13 mA ICC VCC Supply Current VCC, V+ and V–, VEE Separate l 3 7 mA ICC(STBY) Supply Current Disabled VCC, V+ and V–, VEE Connected, VENABLE ≤ 0.8V l 0.6 1.5 mA tON Turn-On Delay (Note 7) 10 µs tOFF Turn-Off Delay (Note 7) 10 µs
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 4:
This parameter is not 100% tested. may cause permanent damage to the device. Exposure to any Absolute
Note 5:
Full power bandwidth is calculated from slew rate measurements: Maximum Rating condition for extended periods may affect device reli- FPBW = SR/(2 • π • VP) ability and lifetime.
Note 6:
The logic low output level of pin TSD is guaranteed by correlating
Note 2:
The LT1970AC is guaranteed functional over the operating tem- the output level of pin ISRC and pin ISNK over temperature. perature range of –40°C and 85°C.
Note 7:
Turn-on and turn-off delay are measured from VENABLE crossing
Note 3:
The LT1970AC is guaranteed to meet specified performance from 1.6V to the OUT pin at 90% of normal output voltage. 0°C to 70°C. The LT1970AC is designed, characterized and expected to
Note 8:
Thermal resistance varies depending upon the amount of PC board meet specified performance from –40°C to 85°C but is not tested or QA metal attached to the device. If the maximum dissipation of the package is sampled at these temperatures. The LT1970AI is guaranteed to meet speci- exceeded, the device will go into thermal shutdown and be protected. fied performance from –40°C to 85°C.
Typical perForMance characTerisTics Total Supply Current Warm-Up Drift VIO vs Time Input Bias Current vs VCM vs Supply Voltage
–100 14 VS = ±15V 12 + –120 I 125°C 10 CC + IV –140 8 25°C –IBIAS 6 –160 4 –55°C +IBIAS 2 • 1000 (50mV/DIV) –180 0 I – EE + IV 0V –2 V OS –200 –55°C –4 –6 INPUT BIAS CURRENT (nA) –220 25°C –8 TIME (100ms/DIV) TOTAL SUPPLY CURRENT (mA) 1970A G01 –240 –10 125°C –12 –260 –14 –15 –12 –9 –6 –3 0 3 6 9 12 15 0 2 4 6 8 10 12 14 16 18 COMMON MODE INPUT VOLTAGE (V) SUPPLY VOLTAGE (±V) 1970A G02 1970A G03 1970afc 4 For more information www.linear.com/LT1970A Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram And Test Circuit Applications Information Package Description Applications Information Related Parts