Datasheet LTC6993-1, LTC6993-2, LTC6993-3, LTC6993-4 (Analog Devices) - 5

LTC6993-1/LTC6993-2 LTC6993-3/LTC6993-4
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. Test conditions are V+ = 2.25V to 5.5V, TRIG = 0V, DIVCODE = 0 to 15 (NDIV = 1 to 221), RSET = 50k to 800k, RLOAD =
∞
, CLOAD = 5pF unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Digital I/O
TRIG Pin Input Capacitance 2.5 pF TRIG Pin Input Current TRIG = 0V to V+ ±10 nA VIH High Level TRIG Pin Input Voltage (Note 6) l 0.7 • V+ V VIL Low Level TRIG Pin Input Voltage (Note 6) l 0.3 • V+ V IOUT(MAX) Output Current V+ = 2.7V to 5.5V ±20 mA VOH High Level Output Voltage (Note 7) V+ = 5.5V IOUT = –1mA l 5.45 5.48 V IOUT = –16mA l 4.84 5.15 V V+ = 3.3V IOUT = –1mA l 3.24 3.27 V IOUT = –10mA l 2.75 2.99 V V+ = 2.25V IOUT = –1mA l 2.17 2.21 V IOUT = –8mA l 1.58 1.88 V VOL Low Level Output Voltage (Note 7) V+ = 5.5V IOUT = 1mA l 0.02 0.04 V IOUT = 16mA l 0.26 0.54 V V+ = 3.3V IOUT = 1mA l 0.03 0.05 V IOUT = 10mA l 0.22 0.46 V V+ = 2.25V IOUT = 1mA l 0.03 0.07 V IOUT = 8mA l 0.26 0.54 V tPD Trigger Propagation Delay V+ = 5.5V 11 ns V+ = 3.3V 17 ns V+ = 2.25V 28 ns tWIDTH Minimum Recognized TRIG Pulse Width V+ = 3.3V 5 ns tARM Recovery Time (LTC6993-1/LTC6993-3) –4 ns tRETRIG Time Between Trigger Signals NDIV = 1 V+ = 3.3V 10 ns (LTC6993-2/LTC6993-4) NDIV > 1 V+ = 3.3V 50 ns tr Output Rise Time (Note 8) V+ = 5.5V 1.1 ns V+ = 3.3V 1.7 ns V+ = 2.25V 2.7 ns tf Output Fall Time (Note 8) V+ = 5.5V 1.0 ns V+ = 3.3V 1.6 ns V+ = 2.25V 2.4 ns
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 6:
The TRIG pin has hysteresis to accommodate slow rising or falling may cause permanent damage to the device. Exposure to any Absolute signals. The threshold voltages are proportional to V+. Typical values can Maximum Rating condition for extended periods may affect device be estimated at any supply voltage using: reliability and lifetime. VTRIG(RISING) ≈ 0.55 • V+ + 185mV and
Note 2:
The LTC6993C is guaranteed functional over the operating VTRIG(FALLING) ≈ 0.48 • V+ – 155mV temperature range of –40°C to 85°C.
Note 7:
To conform to the Logic IC Standard, current out of a pin is
Note 3:
The LTC6993C is guaranteed to meet specified performance from arbitrarily given a negative value. 0°C to 70°C. The LTC6993C is designed, characterized and expected to
Note 8:
Output rise and fall times are measured between the 10% and the meet specified performance from –40°C to 85°C but it is not tested or 90% power supply levels with 5pF output load. These specifications are QA sampled at these temperatures. The LTC6993I is guaranteed to meet based on characterization. specified performance from –40°C to 85°C. The LTC6993H is guaranteed to meet specified performance from –40°C to 125°C. The LTC6993MP is
Note 9:
Settling time is the amount of time required for the output to settle guaranteed to meet specified performance from –55°C to 125°C. within ±1% of the final pulse width after a 0.5× or 2× change in ISET .
Note 4:
Pulse width accuracy is defined as the deviation from the t
Note 10:
Jitter is the ratio of the deviation of the output pulse width to the OUT equation, assuming R mean of the pulse width. This specification is based on characterization SET is used to program the pulse width. and is not 100% tested.
Note 5:
See Operation section, Table 1 and Figure 2 for a full explanation of how the DIV pin voltage selects the value of DIVCODE. Rev. E For more information www.analog.com 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts