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NTE1511 Integrated Circuit 5-Step LED Driver for Linear Scale
Description: The NTE1511 is an integrated circuit in an 14-Lead DIP type package designed for use in level meter applications. This device is capable of driving 5 LEDs to create a bar-type display. In accordance with the input level, the uppermost LED brightness varies to form a linear indicator, making the NTE1511 ideal for use in signal meters and VU meters. A low-voltage reference power supply is built-in, so that the only external components required are LEDs, resistors, and capacitors. Features: D Wide Supply Voltage Range: +5V to +16V D Reference Voltage: Vref = 2.8V 0.2V D LED Output Voltage: Constant Voltage D LED Current: Constant Current by Means of an External Resistor D Allowable Power Dissipation: Pdmax = 1.15W @ TA = +25C Absolute Maximum Ratings: (TA = +25C unless otherwise specified) Maximum Supply Voltage (Pin8), VCCmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +18V Input Voltage (Pin1, Pin2, Pin3), VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to VCC Output Voltage (Pin14), VOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +8.0V Output Voltage (Pin9 to Pin13, VOUT(D) VCC at output (D1 to D5) OFF), VOUT(D) . . -0.3V to +10V Reference Flow-Out Current (Pin5), Iref . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -1.0mA to 0mA Allowable Power Dissipation, Pdmax Without Heatsink . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3W With 50 x 50 x 1mm3 Al plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.15W Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -10 to +60C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 to +125C Note 1. A voltage of VCC+0.3V or more must not be applied to the input and output pins. Recommended Operating Conditions: (TA = +25C unless otherwise specified)
Parameter Supply Voltage Input Voltage Output Pin Load Resistance Symbol Pin # VCC VIN1+, 2 RLOUT 8 2, 3 14 Between OUT (Pin14) and GND (Pin7) Test Conditions Min 5 -0.3 15 Typ - - - Max Unit 16 VCC 20 V V k
Electrical Characteristics: (TA = +25C, VCC = 5V to 16V unless otherwise specified)
Parameter Input Bias Current (Amplifier) Symbol IDC(IN-) IDC (IN1+) IDC (IN2+) Input Bias Current (Comparator) IDC (-C) IDC (+C) Amplifier Offset Voltage (Amplifier) Reference Voltage Pin D Output Current (D1 to D5) Pin D Output Leakage Current Output Pin Output Flow-Out Current VOFF(1) VOFF(2) Vref IOL (D) IOFF (D) IOH (1) IOH (2) Current Dissipation Amplifier Gain ICC VG1, VG2 8 - 5 9 to 13 Iref = 0 to -0.3mA VIN- = 0V, VIN1+ = VIN2+ VD1 to 5 = 2.0V to 2.3V = 1V, Pin # 1 2 3 4, 6 14 14 VIN- Test Conditions = 0V, VIN1+ = VIN2+ = 1V VIN- = 1V, VIN1+ = VIN2+ = 0V VIN- = 1V, VIN1+ = VIN2+ = 0V VIN- = 0V, VIN1+ = VIN2+ VRO1 = VRO2 = 0V = 1V, Min -4 -2 -2 -5 -5 -150 -150 2.6 -25 -50 - - - 30 Typ - - - - - - - - -18 - - - 12 - Max 0 0 0 0 0 +150 +150 3.0 -10 0 -3 -3 25 - Unit A A A A A mV mV V mA A mA mA mA dB
VIN- = 1V, VIN1+ = VIN2+ = 0V, VOUT = 0V, VRO1 = VRO2 = Vref VCC = 6V to 12V, Amp Gain = 20dB
9 to 13 VIN- = 1V, VIN1+ = VIN2+ = 0V, VD1 to 5 = 0V 14 VIN- = 1V, VIN1+ = VCC, VIN2+ = 0V, VOUT = 0V VIN- = 1V, VIN1+ = 0V, VIN2+ = VCC, VOUT = 0V VIN- = 1V, VIN1+ = VIN2+ = 0V Open Loop
Comparator Level: (TA = +25C, VCC = 5V to 16V unless otherwise specified)
Comparator Level LED5 (D5) LED4 (D4) LED3 (D3) LED3 (D2) LED1 (D1) Symbol GD5 GD4 GD3 GD2 GD1 Pin # 13 12 11 10 9 Pin Connection Diagram Test Conditions VRO1 = 0V, VRO2 = 3V Min 2.9 2.3 1.7 1.1 0.5 Typ 3.0 2.4 1.8 1.2 0.6 Max 3.1 2.5 1.9 1.3 0.7 Unit dB dB dB dB dB
Tab Input (-) 1 Input (+) 1 2 Input (+) 2 3 RO 2 4 Vref 5 RO 1 6 GND 7 14 RL Output 13 LED5 12 LED4 11 LED3 10 LED2 9 LED1 8 VCC
.099 (2.52) 14 8 .252 (6.45) 1 .082 (2.1) Dia 7
.265 (6.5)
.748 (19.0)
.300 (7.62)
.167 (4.26)
.100 (2.54) .236 (6.0)
.137 (3.5)

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