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| Datasheet File OCR Text: |
| NTE1500 & NTE1501 Integrated Circuit 7-Step LED Driver Circuit Description: The NTE1500 and NTE1501 are integrated circuits designed for driving 7-dot LED displays. The NTE1500 responds logarithmically to the input signal while the NTE1501 responds linearly. Because an adjustment pin for output current is provided, the brightness of the LED can be controlled. Features: D Linear (NTE1501) and Logarithmic (NTE1500) Response D 7-LED Bar Graph Display Driver D Brightness is Externally Adjustable D High Output Current: 25mA Max D Series Connection Capable for Driving more than 7-Dot Displays Absolute Maximum Ratings: (TA = +25C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V Circuit Voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.5V Input Voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16V Output Voltage, VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16V Supply Current, ICC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25mA Output Current, IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25mA Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1800mW Operating Ambient Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -30 to +75C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to +150C Electrical Characteristics: (TA = +25C, VCC = 9V unless otherwise specified) Parameter Supply Current Output Inflow Current Reference Voltage Output Offset Voltage (Amp) Voltage Gain (Amp) Output Pin Leakage Current Symbol Itot VREF VO(offset) GV IO(Leak) VCC = 16V, GV = 20dB, V2 = 0 V2 = 50mV VCC = 18V V2 = 0 Test Conditions Min 4 13 3.55 -150 18 0 Typ - - 3.75 - 20 - Max 18 25 3.95 +150 22 20 Unit mA mA V mV dB A I(SINK)9-15 VI = 3.55V, V7 = 3.5V Electrical Characteristics (Cont'd): (TA = +25C, VCC = 9V unless otherwise specified) Parameter Input Bias Current (Amp) Symbol IBias2 IBias3 Input Bias Current (Comparator) IBias7 IBias1 Comparator Level (NTE1500) GD1 * GD2 GD3 GD4 GD5 GD6 GD7 Comparator Level (NTE1501) GD1 GD2 GD3 GD4 GD5 GD6 GD7 V7 = 3.65, V8 = 0 Test Conditions VCC = 18V, V2 = 0 VCC = 18V, V3 = 0 VCC = 18V, V2 = 10V, V3 = 0, V7 = 0 VCC = 18V, V3 = 10V, VI = 0, V2 = 0, V6 = V7 V7 = 3.5, V8 = 0 Min -2 -2 -10 -10 -17 -9 -4 -1 1.5 3.5 4.5 0.4 0.85 1.35 1.85 2.35 2.85 3.35 Typ - - - - -15 -7 -3 0 2.0 4.0 5.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 Max 0 0 0 0 -13 -5 -2 1 2.5 4.5 5.5 0.6 1.15 1.65 2.15 2.65 3.15 3.65 Unit A A A A dB dB dB dB dB dB dB dB dB dB dB dB dB dB * The comparator reference voltage is 3.5V and 2.0V is 0dB (VCCopr = 5V to 16V). Pin Connection Diagram Output 1 Input (-) 2 Input (+) 3 LED Current Input 4 LED Current Input 5 Vref 6 16 VCC 15 LED7 14 LED6 13 LED5 12 LED4 11 LED3 10 LED2 9 LED1 R2 7 R1 8 GND 17 1.102 (28.0) Max 17 8 9 1 .256 (6.5) 16 .866 (22.0) Max .300 (7.62) .200 (5.08) .200 (5.08) .100 (2.54) .122 (3.0) |
Price & Availability of NTE1501
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