TSM3914 ETC1 | Alldatasheet

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ye TSM3914/15/16 SERIES = THREE-FIVE SYSTEMS, INC. . T-4I-3B > FEATURES SS @ Packages are End-Stackable up to 10 Cascaded SESNO Arrays (100 Bar Graph Elements) SS VED > Pes @ Linear, Logarithmic, and VU Meter Functions <_S f. WIFks o> ® Bar or Dot Display Mode Externally Selectable SF SPL ES @ LED Current Programmable from 2.0mA to30mA ¥ LP) Se : l® Stable, Internal Voltage Reference for Full-Scale =N9 SS Analog Inputs from 1.2V to 12V Ouse > @ Inputs Operate Down to Ground . ee @ Signal input Withstands 35V Without Damage a or False Outputs @ Variety fal Green/Yellow/Red Bar Sequences PRODUCT MATRIX pd [Part Number | Function —[ Seament Color Designation APPLICATIONS | _temseia | Linear | 10StandardRed | «= Power Meter In Stereo Systems [remastea | unser | toamen |] § Meter in Ham and CB Radios [reuoet4s | Linesr | 10velow | _& VU Meter In Tape Recorders Trawosiee—["—tneer | screen. anes] ogee Contol Maer ranaster| tear —[ aaron ane] _™ Replacement for Edge Meters | Tamsetes | Linear | 6 Green, 2 Yellow, 2 Red | DESCRIPTION [ eenoete {teow | se Senéerd Re The TSM3914/15/16 series are functional replacements 78M39151 Logarithmic for a variety of conventional meters. Each combines a | _TSM39182_ | Logarithmic | | 10Green 10-element LED array and a monolithic integrated circuit | T9M39153 | Logarithmic | 10Yellow (| _ display driver. Successive LEDs light as the analog input | ‘TSM39156 | Logarithmic | 6 Green, 2 Yellow, 2 Red | voltage level increases past prescaled threshold pointe. a a ce The TSM3914 provides a linear analog display, with in- acer ternal threshold points linearly sealed. A logarithmic [ remsoiez | VU | 10Green S| display is provided by the TSM3915 with threshold points set on 3dB Intervals. The TSM3916 Is a variation of the [ramanies [vu | eGreen,avetow,2fRed| logarithmic depiay: the VU meter function is provided Lremssies | VU | 7GreenaRed fg ; Tauioted 7 Green, 3 Red The driver circult contains an adjustable voltage refer- ence which precisely sets LED thresholds, Current drives ABSOLUTE MAXIMUM RATINGS to the LEDs are regulated and programmabie, eliminating > 7 o the need for resistors. The entire display can operate Power Dissipation-Driver (Note 1): pena from supply voltages as low as 3V and as high as 24V. The . V* Voltage: 241 internal voltage reference Is also connected to an accu- Ned Naha aa rate 10-step voltage divider, supplying reference voltages Input Signal Overvol age ( on 2); 235V > for 10 individual comparators. These comparators switch nase se sical -100mv to a8 the signal voltage exceeds the established thresholds inal inset Clie ‘Toma as described above. The typical overall inaccuracy . (deviation from ideal) is typically within 1% for the P Merl paabiors ala etd Pater TSM3914 and below 1dB for the TSM3915 and TSM3916. Storage Temperature Range: -20°C to +70°C A high impedance Input buffer accepts signals down to Lead Temperature Range * ground, yet protects against signal inputs of 35V above "soldering, E Seconds): 230°C or below ground. A single (mode) pin changes the display i i : from a bar graph to a moving dot. THREE-FIVE SYSTEMS, INC. THREE-FIVE SYSTEMS, LTD. rise Optoelectronics Group ‘Swindon, U.K. tu TEL: 602-496-0035; FAX: 602-496-0168 ‘TEL: (0703) 618835; FAX: (0703) 614127 4-60

TSM3914/15/16 SERIES re 19 Zo | OPTOELECTRICAL CHARACTERISTICS T- uy 1+3 [Symboi] Parameter | Conditions Ta= 25°C Cain | typ [Max | unite] 0.10MA < Iker = 4.0mA, liens Reference Suet V" = 12.0V, Vieo = 4.5V [2 [120] 196] v | |__| Signal Input Bias Current OVS Vw S V*- 15V |__| 25 | 100| na | | ts | Supply Current (V* Lead) Vt = 5.0V to 20V, ILnex = 1.0mA | [60] 10] ma] Deviation from Straight Line TSM3914 | through First and Last Threshold Absolute Accuracy Point (Note §) a, [eee lgewemmeas (2 [e/a Threshold Point a = -21 to -27dB (Note 6) a2 in = +3.0 to -7.00dB (Note 7) iB TSM3916 | ¥,, = -10 to -20dB (Note 7) dB LED Segment Intensity V* = 12,0V, Vien = 4.5V, Red tLrer = 1.0MA 0.10 | 0.20 med High Efficiency Red 0.50 | 0.80 med Green 0.60 | 1.50 med Yellow 0.60 | 1.50 med | | LED Intensity Matching Vw 2 10V, V? = 12V, Vieo = 3.0V, 489 (All Segments On) Vener = 1.0mA V' = 12V, Vien = 4.5V, | tao | LED Current/Segment Lage = 10 mA Peak Wavelength Red 655 High Efficlency Red 635 Green 565 Yellow 585 Note 1: Driver dissipation It given by: Pon = (Vuso *1.7V) ho (Total) + (Vyt) 10mA where Vigo Is the LED supply voltage. 1.7V is the nominal Individual LED vottage drop and 10mA ‘fa 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; Uniess otherwise stated, all specifications apply with the following conditions: V* (supply) 3.0V to 20V; input signal range 0.015V to (V* -1.5V) with a maximum of 12Voe; Com perator divider voltages, same limite; T, = 25°C; Reference load current, ByA minimum. Note 4: The following situations can lead to Incorrect operation (a) Vise exceeding V" or more than 14V below V*; (b) signal and comparator divider voltage becoming higher than ‘the limits of Note 1; (c} reference load capacitance above 0 OSuF; (d) reference current loading above 5.0mA. . Note §: Divider non-linearity fs measured with Rio at 0.000V and Few at 10,000 Voe (At lower divider voltages, butfer and comparator offset voltages may add significant error.) Note 6. Accuracy Is measured ceferred to 008 = 10,000 Voc at signal input, with Rio at 0.000V and Fes at 10,000 Voc. (At lower full-scale voltages. butter and comparator offset voltages: Nao TeAscuany nmecnied referred to 36B = 10,000 Vg at signal input, with Pio at 0.000V and Fie at 10,000 Voo. (At lower full-scale voltages, butfer and comparator offset voltages may add significant error.) ee PHYSICAL DIMENSIONS ELECTRICAL = PIN CONNECTION we te

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ott] smc es 7 0:92 Ounce OXXX £0,015 tae Toe ee accom WEIGHT: oo Grma TOLERANCES: 40 Grams 1K XX £0.98) Note 4: Standard package le provided with # rectanglular dust cover or Epoxy blob. THREE-FIVE SYSTEMS, INC, THREE-FIVE SYSTEMS, LTD, Optoelectronics Group Svindon, U.K. ta ‘TEL: 602-496-0035; FAX: 602-496-0168 ‘TEL: (0793) 616835; FAX: (0793) 614127 4-61

. ___TSM3914/15/16 SERIES F-I7- 36 T-41-37 BLOCK DIAGRAM Hor Te aeetnitonn We Baa TYPICAL RESISTOR STRING VALUES D |_| - <— le RESISTOR | TSMa014 | TSM3915 \\ ' PS edi Rt 1.00k 1.00k 0.708k | | R2 1.00k 0.41k 1.531k \\ | R3 1.00k 0.59k 0.923k _1> R4 1.00k 0.83k 0.819k | 1. RE 1,00k 1.17k 1.031k | ™ | { Re 1.00k 1.68k 1.208k 1 Ci> | a7 1.00k 234k 0.769k | 7 TK ue fl Re 1.00k 331k 0.864k AS 1.00k 4.69k 0.970k . S a H Rio 1.00k 66k 1.087k wl ca Le ES ! [Tota | 10k | 226k | tox | nn \\ : + HS +e! wert iis ani i Note 1: Ra determines leo and thus LED brightness: i> 125 Ven it | I hen @ 10 + bal | fs | P> 1 Ra Rowioen J 7 ¥. ! dias Note 2: Re determines full-scale voltage. marta my a=S wa ru Y i] 1 . | Veg m 1.25V (1 +#)+ Iner Re, where Inge is nominally nol vote | BOA. 1 : | Ea Sucre Note 3: v* may be 3.0V to 20V, additionally, for proper { i] operation V* = Vieo, = Vara + 1.5V, = Ver + 1.5V. | 1 Note 4: Mode controls type of display. Connect to LED 9. | al for dot display and to V° for bar display. ™ Note 5: Vieo may be 3.0V to 20V (see Note 3), Vieo may be 1 t limited by the driver circuit dissipation rating. Ba re cs ees ee oe em al Note 6: Driver dissipation is given by Pon = (Vugp -1.7V) len (Total) + (Vy*) 10mA where Vis is the LED supply voltage, 1.7V is the nominal individual LED voltage drop : and 10mA is the maximum current of the V* supply. x7 THREE-FIVE SYSTEMS, INC. THREE-FIVE SYSTEMS, LTD. rape Optoelectronics Group ‘Swindon, U.K. tu TEL: 602-496-0035; FAX: 602-496-0168 ‘TEL: (0784) 616835; FAX: (0703) 614127 4-62

_ INTEGRATED BAR GRAPH DISPLAYS -'1~ © TSM3914/15/16 SERIES ~h4/~3 in TYPICAL APPLICATIONS ” . w a mite ited iid fits t Lt TSM 3014 ‘TSM3914 (LEDs 1-10) (TSM3914 (LEDs 11-20) . Titi weve MP Gta se te te —_ ! i | t teat i sonnet : ” . te = Sent Linear Bar Graph (5V Full-Scale) 20-Segment Linear Dot Graph (2.5V Full-Scate) re) : tiv Sa -. yy ee Mm 5 a a iD . oe Vee ‘TSM3015 OR TSM316 ‘TSM31S mea mer fe v- cot gu Tag sev Me Mm eet Ate or wa roe Ts BR | ! 1 J Ord al S . \\ TT 3 | a a | QPTIOWAL CIRCUIT FQR = PEAR OUTLCTOR Logarithmic (TSM3915) or VU (TSM3516) Audio Bar Graph Logarithmic Audio Dot Graph (10¥ Full-Scale) RECOMMENDED DISPLAY PROCESSING , The TSM3914/16/16 Is constructed on a standard connectors should be immersed. printed circuit board substrate and covered with a plastic Rosin core solder, solid core solder, and low activity reflector, The edge connector tab will withstand 230°C for organic fluxes are recommended. Freon TF, Isopropanol, 5 seconds, Permanent damage to the display will result Methanol or Ethanol solvents are recommended only itreflector temperature exceeds 70°C, Since the display!s at room temperature and for short periods. The use of not hermetic, immersion of the entire package during other solvents or elevated temperature use of the recom- flux and clean operation may cause condensation of flux mended solvents may cause permanent damage to the or cleaner on the underside of the reflector. Only the edge reflector or display. T THREE-FIVE SYSTEMS, ING. THREE-FIVE SYSTEMS, LTD. Pee Optoelectronics Group Swindon, U.K. tu TEL: 602-406-0035; FAX: 602-496-0168 ‘TEL: (0783) 618835; FAX: (0783) 614127 4-63