HT8051ARTZ

HT8051A High speed rail to rail output comparator Feature General Description  140ns propagation delay (@100mV Overdrive) HT8051A is a high speed, low power dissipation  Rail to Rail output, CMOS/TTL Compatible comparator. It applies 140ns Propagation Delay at  Internal Hysteresis to ensure clean switching 100mV Overdrive voltage.  DC coupled Input HT8051A is DC coupled normally, and It includes  Offset voltage: +/-5mV Max. internal hysteresis(5mV) to ensure clean output switch,  Low HYS voltage Temperature Drift: 5uV/℃. the HYS voltage has a ultra-low temperature drift  2.7~5.5V power supply Voltage.  Low quiescent current: 200uA  Chip available in SOT23-5 Package 5uV/℃. HT8051A consists of a high speed Class AB structure, which supports rail to rail output. Applications Package  High speed Line Receivers;  Threshold Detector /Discriminators;  Sampling Circuits;  IR Receivers. The package of HT8051A is SOT23 -5 Block Diagram Bias Generator VDD gm VINP DOUT Comparator VDD VINN GND Rev. 01 HT8051A Absolute Maximum Ratings (If out of these ratings, the filter may be fail or damaged) Table 1 Symbol VDD TA TSTG Parameter Power supply Rating 5.5 Units V Operating ambient Temperature Range -40~+85 ℃ Storage Temperature -65~+150 ℃ Recommended Operating Conditions Table 2 Symbol VDD TA Parameter Rating Units Power supply 2.7~5.5 V Operating ambient Temperature Range -40~+85 ℃ Rev. 01 HT8051A Electrical Characteristics Table 3 Specifications are at VDD=+2.7V～+5.5V Vin+=VDD, Vin-=1.2V RL=10Kohm CL=15pF Vin-=1.2V tt corner & T=30 ºC) Symbol Parameter VCC Operating Supply Voltage VOS Input Offset Voltage VOS_TC Vhyst Vhyst_TC CIN Spec Min 2.7 Typ 3.3 Units Max 5.5 -5 +/-0.15 +5 V mV 0.64 1.96 4.7 uV/℃ 4 5 10.8 mV Input Hysteresis Voltage Temp Drift 4.8 5.4 uV/℃ Input Capacitance Differential 1.8 Common Mode 3.6 Input Offset voltage Temp Drift Input Hysteresis Voltage pF RIN Input Resistance >100 GΩ IQ Quiescent Current 200 uA ISC Output short to VDD 25 mA Vin_cm Common mode Input voltage GND+0.2 VOH Output Voltage High Swing VDD-0.3 VOL Output Voltage Low Swing - VDD-0.2 V V GND+0.3 mV CMRR Common Mode Rejection Ratio 70 dB PSRR Power supply rejection ratio 63 dB tR Rising time 35 ns tF Falling time 28 ns TPD+ Propagation Delay(Low to High) 140 ns TPD- Propagation Delay(High to Low) 135 ns *Note1: The input offset voltage is the average of the input-referred trip points. The input hysteresis is the difference between the input-referred trip points. Rev. 01 HT8051A PAD Definition OUT 1 GND 2 VINP 3 5 VDD 4 VINN HT8051A Table 4 Pad definition Pad Name I/O Analog/Digital Description 1 OUT O A Comparator Output PAD, High Voltage level is Pulled to VDD, Low Voltage is GND. 2 GND GROUND GROUND Ground pin. Connect to the most negative supply, ALL GND pads are connected on die. 3 VINP I A Video signal input PAD, DC coupled. 4 VINN I A DC Reference voltage input PAD. 5 VDD POWER POWER Power supply (3.3V/5V), connect to positive voltage supply. Rev. 01 HT8051A Application Circuits Comp OUT 1K Ohm 1 Input signal 1K Ohm 3 GND VINP VDD 0.1uF 3.3V/5V HT805A 2 OUT 10uF 5 GND VDD VINN 4 Vref 0.1uF GND GND Rev. 01 HT8051A Package SOT23-5 Symbol Unit(mm) Min Typ Max A - - 1.35 A1 0.04 - 0.15 A2 1.00 1.10 1.20 b 0.38 - 0.48 b1 0.37 0.40 0.43 c 0.11 - 0.21 c1 0.10 0.13 0.16 D 2.72 2.92 3.12 E 2.60 2.80 3.00 E1 1.40 1.60 1.80 e 0.95BSC θ 0° - 8° L 0.30 - 0.60 Rev. 01