THREE-FIVE SEMIGONDUCTOR, INC. INTEGRATED BAR GRAPH DISPLAYS TSM3914/15/16 SERIES SSS ts0s013 TSM39146 TSM39147 TSM39148 La co] *TSM39151 TSM39152 TSM39153 TSM39158 TSM39162 TSM39163 TSM39168 TSM39169 *High Efficiency Red LED Segments TSM3914 (Linear) TSM3915 (Log) TSM3916 (VU) ABSOLUTE MAXIMUM RATINGS Power Dissipation-Driver (Note 1): 500mW vi Voltage: 24V Viep Voltage: 24V Input Signal Overvoltage (Note 2): 435V Voltage on Resistor String: -100mV to V+ Reference Load Current: 10mA Signal Input Current (With Overvoltage Applied): +3mA Operating Temperature Range: 0C to 70C Storage Temperature Range: -20C to 70C Lead Temperature Range (Soldering, 5 Seconds): 230C FEATURES Packages are End-Stackable up to 10 Cascaded Arrays (100 Bar Graph Elements) Linear, Logarithmic, and VU Meter Functions Bar or Dot Display Mode Externaily Selectable LED Current Programmable from 2mA to 30mA Stable, Internal Voltage Reference for Full-Scale Analog Inputs from 1.2V to 12V Inputs Operate Down to Ground Signal Input Withstands 35V Without Damage or Faise Outputs m@ Variety of Green/Yellow/Red Bar Sequences Available APPLICATIONS Power Meter in Stereo Systems $ Meter in Ham and CB Radios VU Meter in Tape Recorders Process Control Meters Replacement for Edge Meters DESCRIPTION The TSM3914/15/16 series are functional replacements for a variety of conventional meters. Each combines a 10-element LED array and a monolithic integrated circuit display driver. Successive LEDs light as the analog input valtage level increases past prescaled threshold points. The TSM3914 provides a linear analog display, with in- ternal threshold points linearly scaled. A logarithmic display is provided by the TSM3915, with threshold points set on 3dB intervals. The TSM3916 is a variation of the logarithmic display; the VU meter function is provided by using threshold points at common VU intervals. The driver circuit contains an adjustable voltage refer- ence which precisely sets LED thresholds. Current drives to the LEDs are regulated and programmable, eliminating the need for resistors. The entire display can operate from supply voltages as low as 3V and as high as 24V. The internal voltage reference is also connected to an accu- rate 10-step voltage divider, supplying reference voltages for 10 individual comparators. These comparators switch as the signal voltage exceeds the established thresholds as described above. The typical overall inaccuracy (deviation from ideal) is typically within 1% for the TSM3914 and below 1dB for the TSM3915 and TSM3916. A high impedance input buffer accepts signals down to ground, yet protects against signal inputs of 35V above or below ground. A single (mode) pin changes the display from a bar graph to a moving dot. THREE-FIVE SEMICONDUCTOR, INC. 4545 S. Wendler Drive Tempe, Arizona 85282 TEL: 602-431-0431; TWX: 510-601-1436; FAX: 602-431-0790 T 7 Form (D 10081TSM3914/15/16 SERIES _ ELECTRICAL CHARACTERISTICS INTEGRATED BAR GRAPH DISPLAYS _ Symbol Parameter Conditions Ta = 25C Min | Typ | Max | Units 0.10MA < ILaer <= 4.0mA, Veer | Voltage Reference Output Vi = 12.0V, Vicg ABV 1.2 | 1.281134] v li Signal Input Bias Current 10 100 | mA Is Supply Current (V* Lead) V* = 5.0V to 20V, ILace = 1.0mMA 6.0 10 mA Deviation from Straight Line TSM3914 | through First and Last Threshold -5.0 5.0 % Absolute Accuracy Point (Note 5) 7 3B Vin = -3.0 to 18dB (Note 6) -1.0 5 at each TSM3915 | iN Threshold Point Vin = -21 to -27dB (Note 6) 2.0 0 dB Vin = +3.0 to-7.0dB (Note 7) -1.0 1.5 dB TSM3916 IN s Vin = -10 to -20dB (Note 7) -2.0 2.0 dB OPTICAL CHARACTERISTICS Symbol Parameter Conditions T, = 25C Min | Typ | Max | Units . vr = 12,0V, Viep = 4.5V, Ie LED Segment Intensity Lace = 1.0mA 0.10 | 0.20 med LED Intensity Matching Vin 2 10V, V* = 12V, Vien = 3.0V +33 % (All Segments On) ILger = 1.0MA V" = 12V, Vien = 4.5V, lLep LED Current/Segment Leer = 10mA. 10 mA AP Peak Wavelength 660 nm Note 1: Driver dissipation is given by: Pos = is the maximum current of the V* supply. Note 2: The addition of a 39k resistor in series with the input signal allows 100V signals without damage. Note 3: Unless otherwise stated, all specifications apply with the following conditions: V* (supply) 3.0V to 20V; input signal range 0.015V to (V*-1.5) witha maximum of 12 Voc; Com- parator divider voltages, same limits; T, = 25C; Reference load current, 802A minimum. Note 4: The following situations can lead to incorrect operation (a) Vieo exceeding V* or more than 14V below V*; the limits of Note 1; (c) reference load capacitance above 0.05uF; (d) reference current loading above 5.0mA. Note 5: Divider non-linearity is measured with Rio at 0.000V and Ax) at 10.000 Voc. (At lower divider voltages, buffer and comparator offset voltages may add significant error.) Note 6: Accuracy is measured referred to0d8 = 10.000 Voc at signal input, with Pyo at 0.000V and Ry) at 10.000 Voc, (At lower full-scale voltages, buffer and comparator offset voltages may add signinficant error.) Note 7: Accuracy is measured referred to 3dB = may add significant error.) (Vie - 1.7V) ten (Total) + (Vy+) 10mA where Vien is the LED supply voltage, 1.7V is the nominal individual LED voltage drop and 10mA (b) signal and comparator divider voltage becoming higher than 10.000 Voc at signal input, with Rio at 0.000V and Ry, at 10.000 Voo. (At lower full-scale voltages, buffer and comparator offset voltages PHYSICAL DIMENSIONS 1.5480 PIN ELECTRICAL CONNECTION P . Toverances: SA SOC | -~_________. 02700 ae (X.XX 0.38) 1 Vv SEPACES@ W.08) * 693) TOL NOW ACCUM -___..| LED ot tO PLACES 080 a 0.089 2 LED 1 = Bast Tan nen 3 GROUND Q Q 201) WPLACES 1 3 5 2 a, ate 4 V+ Pema een sees = 5 Rio a | 0 O)naceaa ree { 6 SIGNAL IN aan ec at, vn wey } ery) | Sito 7 Rut @ See! | oe us, 8 REFERENCE OUT ag as 5 i ag ei a___ | 9 REFERENCE ADJUST j ime Rl eI =| Lt 10 MODE el ee a] i ede s 1.40 12 PLACES 213 0,105 (0.251 11 LED 9 0.380 Ban ns7s an MAX 12 PLACES 12 LED 10 a ois aus j~-- 11 SPACES @ 8.100 _ 1100 0.12 Ounce INCHES ma rounowaccuw - - - WEIGHT: DIMENSIONS: 3.40 Grams (Millimeters) Note 1: Standard package Is provided with a rectangular dust cover or Epoxy blob. @ THREE-FIVE SEMICONDUCTOR, INC. 4545 S. Wendler Drive * Tempe, Arizona 85282 TEL: 602-431-0431; TWX: 510-601-1436; FAX: 602-431-0790 Form ID 1008 = me ellINTEGRATED BAR GRAPH DISPLAYS TSM3914/15/16 SERIES BLOGK DIAGRAM ir a onranatons ues TYPICAL RESISTOR STRING VALUES a te RESISTOR | TSM3914 | TSM3915 | TSM3916 | ae oS R1 1.00k 1.00k 0.708k * | R2 1.00k 0.41k 1.531k | ae | R38 1.00k 0.59k 0.923k | $ + > 4 | R4 1.00k 0.83k 0.819k | , | R5 1.00k 1.17k 1.031k | we JON | R6 1.00k 1.66k 1,298k l , HY | R7 1.00k 2.34k 0.769k | R8 1.00k 3.31k 0.864k neg tS . Rg 1.00k 4.69 0.970k | R10 1.00k 6.63k 1.087k Total 10k 22.6k 10k ver| REFERENCE "$ 5 | po; wourace | | t2v at REF | a> = Ss Ss "> 2S AAA V e Yo Ve [ x + Al > q S mors | ae Note 1: Ra determines lLen and thus LED brightness: L s+ = | Vv V vig we LEO! lLen=10 ( 1.25 FS ) (NOTE 3) gs 4 Ra Rowiper Vien (NOTE 5) | | < a FROM Pio | i i Note 2: Re determines full-scale voltage: Re Ra < Ves & 1.25V ( 4 )+ lner Re, where Iper is nominally 80uA. MODE SELECT = | AMPLIFIER (NOTE 4) | | Note 3: V* may be 3.0V to 20V, additionally, for proper operation V* = Viep, = Vsia + 1.5V, = Vaer + 1.5V. Note 4: Mode controls type of display. Connect to LED 9 = 3 a m a SIG nt for dot display and to V* for bar display. | | Note 5: Vien may be 3.0V to 20V (see Noie 3). Vien may be Leese 4 limited by the driver circuit dissipation rating. THREE-FIVE SEMICONDUCTOR, INC. i 4545 S. Wendler Drive * Tempe, Arizona 85282 TEL: 602-431-0431; TWX: 510-601-1436; FAX: 602-431-0790 Form ID 1008INTEGRATED BAR GRAPH DISPLAYS TSM3914/15/16 SERIES TYPICAL APPLICATIONS av l 8V pA o WA . >a ne we I 7 ac Leo uO LED MODE v' Vieg] = te veo rep MODE Vv Viep = te ED LED MODE Vv Vien TSM3914 REF AEF sig ve Rta Rai out add gv. ov SIGNAL ~ SOURCE Linear Bar Graph (5V Full-Scale) 11 8V-18V 10 f d ft MODE VF Viep TSM3915 OR TSM3916 REF REF v- Fro Raut ag 1 = 350k 1% Va | | { 20.0% | | OPTIONAL CIRCUIT FOR PEAK DETECTOR Logarithmic (TSM3915) or VU (TSM3916) Audio Bar Graph TSM3914 (LEDS 1-10) TSM3914 (LEDS 11-20) REF REF sig v-_ Bro Ra _ out sig vo Piro Bn) gut ad yy fd Ov 25V SIGNAL 20-Segment Linear Dot Graph (2.5V Full-Scale) Tea CeO CED MODE vy" ViEp J q aT) TSM3915, REF REF siq@_v Rio =u out ans ov tov SIGNAL = 620 AC OR OC Logarithmic Audio Dot Graph (10V Full-Scale) RECOMMENDED DISPLAY PROCESSING The TSM3914/15/16 is constructed on a standard printed circult board substrate and covered with a plastic reflector. The edge connector tab will withstand 230C for 5 seconds. Permanent damage to the display will result if reflector temperature exceeds 70C. Since the display is not hermetic, immersion of the entire package during flux and clean operation may cause condensation of flux or cleaner on the underside of the reflector. Only the edge connectors should be immersed. Rosin core solder, solid core solder, and low activity organic fluxes are recommended. Freon TF, lsopropanol, Methanol or Ethanol solvents are recommended only at room temperature and for short periods. The use of other solvents or elevated temperature use of the recom- mended solvents may cause permanent damage to the reflector or display. THREE-FIVE SEMICONDUCTOR, INCs products are not authorized for use as critical components in life support devices or systems. Consult factory for high reliability processing. Copyright, 10/86 a7 THREE-FIVE SEMICONDUCTOR, INC. THREE-FIVE SEMICONDUCTOR, ING. reserves the right to change electrical and mechanical characteristics as specified herein. 4545 S. Wendler Drive Tempe, Arizona 85282 TEL: 602-431-0431; TWX: 510-601-1436; FAX: 602-431-0790 . Form ID 1008 Printed InU.S.A.