-- OrdeFthis data sheet by MC2831ND -1 MC2831A ----- ----".----. ---- --.-- . -- --- ___ ---- LOW POWER FM TRANSMITTER SYST&M The iMC28W A is a one-cttip FM transmitter subsystem designed fo{ cordless telepho[?e and FM communication equipment. it includes a Microphone Amplifier, Pilot "rone Oscillator, Voltage Controlled Oscillato'r and BaWery Monitor. Wde Raige of operating V] Supply Voltage{S.a`(?-8.0 Low Drai; Curre!]t (4.0 mA Typ Ftil! Operation at v~~. = 4.0 v) BaReq Checker (290 WA Typ at VCC = 4,0 V] Low Number of External Parts Required FiGURE 1 -- FUNCWONAL BLWK D!AGWM 1 1 1 P SUFFIX PLASTIC PACYAGE CF~SE646-U6 2 ,,:'> 3 74 4 13 D stiFFlx PMSTl~; PACWGE CASE 751 B-03 S0-16 5 6 ---..------ . _ ?. '.. ----------- 1 flGURE 2 -- TEST URCU~ 0.0047 [ P' = 4 Mod In VCC2 3 I 0.01 + 4 47JI Mic Amp In - q 5 6.8 k 220 k Mic Amp out 6 Tone Switch 1 7 I Tone Output 48 .!, & VCC = 3.0 V to 8.0 V NOTES: S1 is a normally closed push button tvpe switch, Batte~ checker circuit (Pins 10, 11) is not used in this application. The c~stal used is fundamental mode, calibrated for parallel resonance with a 32 pF load. The 49.7 MHz output is generated in the output buffer, which generates useful harmonics to 60 MHz. All capacitors in microfarads, inductors in Henries and reaiators in Ohms, unless otherwise specified, The network on the output at Pin 14 provides output tuning and impedance matching to 500 at 49.7 MHz. Harmonics are suppressed bv more ,, than 25 dB. MO~R06A @ Semiconductors ELECTRICALCHARACTERISTICS (Vccl = 4.o Vdc, VCC2 = 4.0 Vdc, TA = 25"C, unless othewise noted) Symbol Pin Min Typ Max Unit Drain Current Iccl 12 150 290 420 "PA Drain Current ICC2 4 2.2 3.6 6.5 mA VTB 11 1.0 1.2 1.4 .:'.,,. V*.:$$$ VOSAT 10 -- 0.15 0.5 Voltage Gain, Closed Loop (Vin = 1.0 mVrms, fin = 1.0 kHz) -- 5, 6 27 Output dc Voltage -- 6 1.1 Charatieristic BATTERY CHECKER Threshold Voltage (LED Off a On) Output Saturation Voltage (Pin 11 = O V, Pin 10 Sink Current = 5.0 mA) MIC AMPLIFIER .,,,. Output Swing (Vin = 30 mVrms, fin = 1.0 kHz) Total Harmonic ~;''yy?~ ,,,, ,t\.>,,:*<,*$j, , :~,. \ ,*.,,,., .,,,,,. -...:. .,\,, >", 3$ ,,> ,* \,,,../+. -- 6 0.8 :q>qig:+$' ~ ~ ,,,$,~.$ ,::>, ~q.~:.+: , >+ !.. `*;:" 1.7 l.~~ 30 .,,.2$3$$8 ..%*>.: 1.6 Vdc Vp-p 0/0 THD Distortion dB (VO = 31 mVrms, fin = 1.0 kHz) PILOT TONE OSCILLATOR (250 Q LOADING) Output AF Voltage (f. -- = 5.0 kHz) Output dc Voltage -- Total Harmonic Distortion -- (f. Tone Switch Threshold (120 ~ LOADING] Output RF Voltage (f. = 16,6 MHz) Output dc Voltage Modulation Sensitivity (Note 1) (Vin = 1.0 V = 0.2 V) Maximum Deviation (Note 1) (Vin = OVtO +2.0 V) RF Frequency Range Note 1. Modulation sensitivity and maxim@ ,, VRFO .> ~' -- *htl}\~: \ >,.. ~..'>. ~1~ * -- ,.., `LJ+*.L -:.+.?::,:?:'..$l:,. .i~ !,!,., ,,~' ~, >++,> .{,,*..., ..:~:t}~>J,~::~' -- .:\.,$:*$*.. ,<\*h.: .,1~~~ ,, ,,,;,,3,,:/,, .. >...`..... ~,~-+*. `"l$;+ -- ~L*>:,, ,. :..1 -- mVrms -- 1.4 -- Vdc - 1.8 5.0 0/0 1.1 1.4 1.7 Vdc 14 -- 40 -- mVrms 14 -- 1.3 -- Vdc 3, 14 6.0 10 18 HtimVdc 3, 14 *2.5 t 5.0 k 12.5 kHz 14 -- -- 60 MHz ~y .,$*:,J*$ "d~$~%*ionare measured at 49.815 MHz, which is the third harmonic of the crystal frequency, M-ROLA @ 50 8 ,?* `K;, ,.,..,. ~+,!{,:"y~ ..,-,.. ;\Wi ,.?7 +~-. \ f($,.$r ~~!;.. .:\.\.\. ..':.,, .\ \\:J s+.:> .,,,~:.<,,~,, ,&<. .... = 5.0 kHz, VAF = 150 mVrms) FM MODULATOR `~!.i:, .~\+>\:?. *.e~ ,,~ ~~j.\,!..,:.s$ ,, ~i~.$::;\J- Semicondutiors OUTLINE DIMENSIONS NOTES: 1. LEAOSWITHIN 013 mm (0.0051RADIUSOFTRUE POSITIONAT SEATINGPLANEAT MNIMUM MATSRIALCONOITION. 10 . m . +!* -B- w ----J .--y_~_. _u _ u_u_u t P I 0.25 (0.010) @ I B @ [ .`r' ?,* -- JnL ...., }* Y14,5M, 1982. ,.: *,:, ,. ,.,,$$ 3 CONTROLLINGOIWqS@N'wLIMETSR. 4. OIMENSIONA ~ND &~iNOT INCLUOEMOLO PROTRUSIO~$' 5. MMIMU~~O%.PROTRUSION 0.15 (0.~1 + +R X45" ., D SUFFIX PAC~GE TIB @lA M-ROLA -@ 751 B-03 (S0-16) ,, [+1025[0.010)@l ROJA = 135"CW O{ . 4 1,42 I . .. G .,W , GkN~RAL-EISENHOWER -31023 TOULOUSS ~tiX , ,'. 1.27 BSC Semicondutiwm S.A. AVENUE 1,/3 I . .. m t CASE I . ~!J\ 4YJ3,,3.?~ P~STIC b - FRANCE , I 1 . "," ," , V,W. 0.050 BSC .