TCM8000 CELLULAR TELEPHONE AUDIO PROCESSOR SCTS041A – D4086, AUGUST 1992 – REVISED APRIL 1993 • • • • • • DCLK DATA RXO REF V BRX V CC VBTX LOAD PSO TXSUM TXO Integrated RX and TX Voice Filters Integrated RX and TX Data Filters Narrow-Band RX SAT Filter Pre-Emphasis and De-Emphasis Filtering CCITT-Compatible Compandor Adjustable TX and RX Limiters Loudspeaker Driver Microphone Preamplifiers Digitally Controlled Gains and Signal Muting DAC RXLIM RXDO HSO HFO ST CTI RXVI EXO EXIN ETC 6 5 4 7 3 2 1 44 43 42 41 40 39 8 38 9 37 10 36 11 35 12 34 13 33 14 32 15 31 16 30 17 29 18 19 20 21 22 23 24 25 26 27 28 Low Power LIMIN POUT TXLIM TXVI CMPR CO CVE CTC CIN TXVO TDI RXIN GND XT1 XT0 TXDA M1O M1P M1N M2P M2N M2O • • • • • • • • • FN PACKAGE (TOP VIEW) Switchable AMPS/TACS and NMT Operation Standby Mode Simple 3-Wire Digital Interface FR PACKAGE (TOP VIEW) Low External Component Count LIMIN POUT TXLIM TXVI CMPR CO CVE CTC CIN TXVO TDI • Single 5-V Supply 44-Pin PLCC Package and Thin Quad Flat Pack description TXO TXSUM PSO LOAD VBTX VCC VBRX REF RXO DATA DCLK 44 43 42 41 40 39 38 37 36 35 34 1 33 2 32 3 31 M20 M2N M2P M1N M1P M1O TXDA XT0 XT1 GND RXIN DAC RXLIM RXDO HSO HFO ST CTI RXVI EXO EXIN ETC 4 Implemented in advanced LinBiCMOS 30 5 technology, the TCM8000 audio processor 29 6 provides a highly integrated solution for voice28 7 band signal processing in FM cellular mobile 27 8 and hand-portable telephones. The device 26 incorporates the necessary voice and data filters 9 25 as well as ancillary functions, such as microphone 10 24 preamplifiers, a loudspeaker driver, and a CCITT11 23 12 13 14 15 16 17 18 19 20 21 22 compatible compandor circuit. A simple 3-wire serial interface provides digital control over signal path switching, muting, and gain adjustment. The filter responses can be switched to suit Advanced Mobile Phone System/Total Access Communication System (AMPS/TACS) and Nordic Mobile Telephone (NMT) system requirements. Switched-capacitor techniques are used to implement the filtering functions, and appropriate antialiasing and smoothing filters are incorporated in the device. In the active mode, the TCM8000 uses less than 14 mA of supply current and can be set into a standby configuration, which reduces the supply current to less than 4 mA. The TCM8000 is characterized for operation from – 25°C to 80°C. Caution. These devices have limited built-in protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. LinBiCMOS is a trademark of Texas Instruments Incorporated. Copyright 1993, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 EXO RXVI 15 14 1 CTI 13 3 4 RXLIM 8 1 ST 12 4 10 18 RXIN RXBP Filter – 6 dB RXTRIM ±4 dB 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 M2O DATA 21 HFO RXDO DAC PSO 4 1 + – MICTRIM ± 4 dB A2 26 + – MICSW TDSW 28 3 1 5 DCLK XT1 1 A1 24 27 XT0 Transmit Data Filter 23 25 20 OSC 22 6 LOAD 42 SATTRIM – 0 dB/7dB 44 TXDA M2N 7 DAC HSO 2 VBTX M2P SAT Filter 19 VBRX M1N 9 4 REF GND 11 LSSW RXSW Receive Data Filter 3 M1P Volume Control ±15 dB Σ EBP 1 VCC M1O Expander Digital Control 36 CBP TXLP1 Filter 6 dB Limiter 4 Σ TXLP2 Filter 6 dB TXSW 43 30 Compressor 39 36 LIMIN TXVO 37 TXVI 31 33 32 35 34 TDI 38 TXLIM CO POUT CIN CVE CTC CMPR Pin numbers shown are for the FN package. 29 41 TXSUM TXTRIM ± 4 dB 40 TXO TCM8000 CELLULAR TELEPHONE AUDIO PROCESSOR RXO EXIN ETC 4 16 17 SCT041A – D4086, AUGUST 1992 – REVISED APRIL 1993 2 functional block diagram TCM8000 CELLULAR TELEPHONE AUDIO PROCESSOR SCTS041A – D4086, AUGUST 1992 – REVISED APRIL 1993 Terminal Functions PIN NAME NO. I/O DESCRIPTION FN FR CIN 31 36 I Compressor analog input CMPR 35 40 I Compressor rectifier analog input CO 34 39 O Compressor analog output. CO should be ac coupled to TXVI and to CMPR. CTC 32 27 O Compressor time constant control, analog output. A 220-nF capacitor should be connected between CTC and GND. CTI 13 18 I Call tone analog input. Signals on CTI are summed into the receive voice path prior to the volume control circuit. CTI can be muted under control of the serial interface. CVE 33 38 I Compressor virtual earth, analog input DAC 7 12 O Digital-to-analog converter output, programmable between GND and VCC /2 in sixteen steps DATA 5 10 I Serial interface digital data input DCLK 6 11 I Serial interface digital clock input ETC 17 22 O Expander time constant control, analog output. A 220-nF capacitor should be connected between ETC and GND. EXIN 16 21 I Expander analog input EXO 15 20 O Expander analog output. EXO should be ac coupled to RXVI. GND 19 24 HFO 11 16 O Normal drive receiver voice analog output HSO 10 15 O High drive receiver voice analog output LIMIN 39 44 I Transmit limiter analog input LOAD 43 4 I Serial interface load, digital input. Data shifted into DATA under control of DCLK is transferred to internal registers when LOAD goes high. M1N 25 30 I Preamplifier 1 negative analog input M1O 23 28 O Preamplifier 1 analog output M1P 24 29 I Preamplifier 1 positive analog input M2N 27 32 I Preamplifier 2 negative analog input M2O 28 33 O Preamplifier 2 analog output M2P 26 31 I Preamplifier 2 positive analog input POUT 38 43 O Preemphasis filter analog output. POUT should be ac coupled to LIMIN. PSO 42 3 O Analog output of SAT filter REF 3 8 RXDO 9 14 O Receive data filter analog output RXIN 18 23 I Receive analog input 8 13 I/O RXLIM Ground Unbuffered midsupply voltage, nominal output VCC /2 RXO 4 9 O Receive limiter adjust voltage, controls maximum signal output on HSO. The dc input is between GND and VCC /2. Receive voice filter analog output RXVI 14 19 I Receive voice analog input to volume control circuit. RXVI can be muted under control of the serial interface. ST 12 17 I Side tone analog input. Signals on this terminal are summed into the HSO output signal. TDI 29 34 I Tone of DTMF analog input. Signals on this terminal can be used in place of the main voice signal in the TX path and summed into the RX voice path, under control of the serial interface. TXDA 22 27 I Transmit data analog input TXLIM 37 42 I Transmit-limiter level adjust, controls maximum signal level at TXO. The dc input is between GND and VCC /2. TXO 40 1 O Transmit section analog output TXSUM 41 2 I Transmit summing analog input. The signal on TXSUM is summed into the main TX output after all filter stages. TXSUM can be muted under control of the serial interface. TXVI 36 41 I Transmit voice analog input TXVO 30 35 O Transmit voice analog output. TXVO is the output from the preamplifier and microphone gain adjust sections. It should be ac coupled into the compressor input CIN. VBRX 2 7 Buffered midsupply voltage to receive sections, nominal output VCC /2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3 TCM8000 CELLULAR TELEPHONE AUDIO PROCESSOR SCTS041A – D4086, AUGUST 1992 – REVISED APRIL 1993 Terminal Functions (continued) PIN NAME VBTX VCC XT0, XT1 NO. I/O DESCRIPTION FN FR 44 5 Buffered midsupply for all transmit sections, nominal output VCC /2 1 6 Most positive supply voltage, 5 V ± 5% 21, 20 26, 25 Crystal oscillator terminals for connection to 3.58-MHz crystal resonator detailed description – transmit path input conditioning A pair of uncommitted operational amplifiers is provided at the main audio signal input. These components can be configured using external resistors to adjust the gain as required to suit particular microphones and external preamplifiers. The TCM8000 has been designed to provide 100 mVrms at the outputs of the preamplifier at pins M1O and M2O. The switch MICSW allows the selection of either amplifier input for hands-free or handset microphones. A digitally controlled gain/attenuation block, MICTRIM, allows adjustment of the signal level into the compressor in sixteen 0.5-dB steps. A digitally controlled switch, TDSW, allows alternative signals from other sources such as audio or DTMF tones to be injected into the transmit signal path from TDI. The output of TDSW is ac coupled at TXVO through an external capacitor into the compressor. compressor The compressor provides a 2:1 dynamic range compression of its input signal, converting an input range of 60 dB to 30 dB at its output. The test circuit diagram (Figure 2) shows the external components required to set time constants and to limit gain under idle channel conditions. The envelope time constant is determined by the value of a capacitor attached to CTC with 220 nF providing attack time of 3 ms approximately and decay times of approximately 13 ms. The compressor can be bypassed under control of the serial interface. The output from this stage, CO, is externally ac coupled into the transmit filter at TXVI and into the compressor rectifier input at CMPR. TX filtering and limiter The transmit band limiter is located between a pair of band-pass filters. Filter TXF1 is located before the limiter and provides 6 dB per octave preemphasis; filter TXF2, located after the limiter, features a phase-equalized response to control overshoot. The frequency responses of TXF1 and TXF2 are switchable between 3 kHz and 3.4 kHz cut off to meet the requirements of AMPS/TACS and NMT systems, respectively. Frequency response templates and typical responses are shown in Figures 3 through 6. The limiter is provided to meet maximum deviation specifications, and the limit level is controlled by the dc voltage applied to TXLIM. The output signal from POUT is ac coupled into the limiter input to eliminate asymmetrical limiting that could arise as a result of dc offsets. output conditioning The voice output signal from TXLP2 is passed to a three-input summing circuit, whose other inputs come from the TX data path and from TXSUM. Each input to the summing circuit can be enabled or muted under control of the serial bus. The overall deviation level is controlled by a digitally controlled gain/attenuation block that provides sixteen 0.5-dB steps of output level adjustment. The transmit supervisory audio tone (SAT) is applied to TXSUM. TXSUM can also be used as an input for transmit data, allowing implementation of alternative data filtering and conditioning to that implemented on the TCM8000. transmit data Transmit data, which is voice-band FSK coded for NMT and wide-band Manchester coded for AMPS and TACS (8K-baud TACS, 10K-baud AMPS), is applied to TXDA. The signal is filtered by the TX DATA filter, whose response can be switched from a band-pass to a low-pass configuration to meet the requirements of NMT and AMPS/TACS, respectively. Frequency templates and typical responses are shown in Figures 7 and 8. 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TCM8000 CELLULAR TELEPHONE AUDIO PROCESSOR SCTS041A – D4086, AUGUST 1992 – REVISED APRIL 1993 detailed description – receive path input conditioning The received demodulated signal is applied to RXIN and passes to a gain-adjust block that provides ± 4 dB of adjustment in sixteen 0.5-dB steps. At this point, the receive signal path is split into the voice path, the data path, and the supervisory audio-tone (SAT) path. receive voice filter The received voice signal is processed in the band-pass RXBP filter, whose response has been designed to meet the requirements of AMPS/TACS and NMT systems. The response incorporates the required 6-dB/octave de-emphasis. Frequency response templates and a typical response are shown in Figures 9 and 10. expander The expander implements a 2:1 dynamic range expansion of the signal at its input, EXIN. It is designed to produce 0-dB gain at 100 mVrms. Envelope attack and decay times are determined by a capacitor attached to ETC, with a value of 220 nF producing attack time of 3 ms and decay times of approximately 13 ms. The expander can be bypassed under control of the serial interface. receive summing circuit and volume control A 3-input summing circuit is provided, which takes as input the voice signal from the expander, audio tones from the TDI input, and a call-tone input applied to CTI. Each input can be enabled or muted under control of the serial interface. The output from this block is passed to the volume control, which provides ± 15 dB of output level control in sixteen 2-dB steps. output buffers Two output buffer circuits are provided. The buffer that drives HFO is capable of driving loads down to 10-kΩ impedance and is intended for use with an external speaker driver. The HSO buffer features a high-drive bipolar output stage that allows impedances of 500 Ω to be driven directly with low distortion. The HSO output path also incorporates a summing circuit to facilitate side-tone injection from the ST input and a limiter circuit, which allows maximum sound pressure levels to be determined. The limit level is controlled by the voltage applied to RXLIM. Selection between the HFO and HSO outputs is achieved via the serial interface. receive data path A switchable response filter is provided to condition receive data before it is output on RXDO. Frequency response templates and typical responses are shown in Figures 11 and 12 for AMPS/TACS and NMT, respectively. receive SAT path Received supervisory audio tones (SAT) are separated from the voice signal in a switchable response narrow-band filter. This filter has a center frequency of 6 kHz in the AMPS/TACS mode and 4 kHz in the NMT mode. The filter output is passed to a level-adjust circuit, which provides eight 1-dB steps of adjustment. The processed SAT signal is output on PSO. miscellaneous midsupply The analog midsupply, effectively signal ground, is derived from a resistive divider connected between VCC and GND to produce VCC /2 at REF. This voltage is buffered by a pair of low output impedance amplifiers to produce midrail supplies for the receive and transmit sections at BBRX and VBTX, respectively, with separate midrails used to minimize coupling between the receive and transmit circuits. REF, VBTX, and VBRX should be decoupled to ground with capacitors physically mounted as close to the device as possible. VBTX and VBRX directly control the 0-dB point of the compressor and expander, respectively, so it is important that a stable and well-regulated supply is provided to VCC. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5 TCM8000 CELLULAR TELEPHONE AUDIO PROCESSOR SCTS041A – D4086, AUGUST 1992 – REVISED APRIL 1993 detailed description – miscellaneous crystal oscillator A low-power crystal oscillator is provided to generate the master clock signal for the switched-capacitor filters. Sampling frequencies and internal divide ratios have been selected to allow a low cost 3.58-MHz crystal to be used. No external components except the crystal are required. DAC A four-bit digital-to-analog (DAC) converter provides sixteen levels from GND to VBRX in linear steps. The DAC can be used to set limit levels by controlling TXLIM or RXLIM. Its output is unbuffered and should only be used to drive high-impedance loads. standby mode The standby mode disables all signal paths with the exception of the receive data path. In the standby mode, current consumption is reduced to less than 4 mA. digital interface The TCM8000 is configured using a three-wire digital interface. Eight-bit words, comprised of four address and four data bits, are applied in serial to DATA and clocked into the device on the rising edge of DCLK. The data is transferred to internal registers by pulsing the LOAD signal high (see Figure 1). All internal registers are reset low on power up. DCLK DATA AD3 AD2 AD1 AD0 D3 D2 LOAD Figure 1. Serial Interface Timing Diagram 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D1 D0 TCM8000 CELLULAR TELEPHONE AUDIO PROCESSOR SCTS041A – D4086, AUGUST 1992 – REVISED APRIL 1993 Table 1. Register Definitions AD3 AD2 AD1 AD0 0 0 0 0 D3 VC3 D2 VC2 D1 VC1 D0 VC0 FUNCTION 0 0 0 1 TX3 TX2 TX1 TX0 TXTRIM gain adjust TX3 – TX0 set the main transmit output level in 0.5-dB steps from – 4 dB <0000> to 3.5 dB <1111> relative to nominal, <1000> 0 0 1 0 SBY RTM RVM CTM SBY: Standby/ active control, when set to 1, all sections of the device are active; when set to 0, all sections apart from from the receive data path are disabled. RTM: Receive DTMF/tone mute, 1 = mute, 0 = enabled RVM: Receive voice mute, 1 = mute, 0 = active CTM: Call tone mute, 1 = mute, 0 = active 0 0 1 1 HSS TSM TVM TDM HSS: Handset select, 1 selects HSO RX output and M1 preamplifier, 0 selects HFO output and M2 preamplifier TSM: TXSUM mute, 1 = mute, 0 = active TVM: Transmit voice mute, 1 = mute, 0 = active TDM: Transmit data-path mute, 1 = mute, 0 = active 0 1 0 0 – NAT TTS CEN NAT: NMT– AMPS/TACS select, 1 = NMT, 0 = AMPS/TACS TTS: Transmit DTMF/tone select, 1 = DTMF/tone, 0 = TX voice CEN: Compandor enable, 1 = compressor/expander enabled, 0 = bypassed (0-dB gain) 0 1 0 1 RX3 RX2 RX1 RX0 RXTRIM gain adjust RX3 – RX0 set the main transmit output level in 0.5-dB steps from – 4 dB <0000> to 3.5 dB <1111> relative to nominal, <1000> 0 1 1 0 STM ST2 ST1 ST0 SATTRIM gain adjust ST3 – ST0 set the receive SAT gain in 1-dB steps from – 4 dB <000> to 3 dB <111> relative to nominal, <100>, STM: Receive SAT path mute, 1 = mute, 0 = active 0 1 1 1 MT3 MT2 MT1 MT0 MICTRIM gain adjust MT3 – MT0 set the microphone trim gain in 0.5-dB steps from – 4 dB <0000> to 3.5 dB <1111> relative to nominal, <1000> 1 X X X DA3 DA2 DA1 DA0 DAC control DA3 – DA0 set the level on the DAC output from 0 <0000> to VBRX <1111> Volume control VC3 – VC0 set the output level on HFO and HSO in 2-dB steps from – 16 dB <0000> to 14 dB <1111> relative to nominal, <1000> POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 7 TCM8000 CELLULAR TELEPHONE AUDIO PROCESSOR SCTS041A – D4086, AUGUST 1992 – REVISED APRIL 1993 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.3 V to 7 V Input voltage range, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND – 0.3 V to VCC + 0.3 V Ground voltage range, GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.3 V to 7 V Operating free-air temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 25°C to 80°C Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 55°C to 100°C † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTE 1: Voltage value is with respect to GND. recommended operating conditions VCC VIH Supply voltage VIL TA Low-level input voltage High-level input voltage MIN TYP MAX UNIT 4.75 5 5.25 V 3.5 Operating free-air temperature V – 25 0.8 V 80 °C electrical characteristics over recommended operating temperature range, VCC = 5 V, fxtal = 3.58 MHz PARAMETER TEST CONDITIONS MIN Standby ICC Supply current IIH IIL High-level input current fclock Serial clock frequency, DCLK Zi Input impedance, RXIN, RXVI, CTI, ST, TXVI, LIMIN, TXSUM, CIN, TXDA, EXIN, CMPR, TDI 4 Operating 14 VI = 5 V VI = 0 V Low-level input current MAX 10 f = 1 kHz 70 f = 1 kHz 20 UNIT mA µA 10 µA 200 kHz kΩ Midsupply reference voltage, REF 2.4 2.6 Buffered midsupply reference voltage, VBTX, VBRX 2.4 2.6 V 1 µA Input current at M1P, M1N, M2P, M2N, RXLIM, TXLIM V transmit path specifications, VCC = 5 V, fxtal = 3.58 MHz M1/M2 to TXVO, MICTRIM, A1 and A2 configured as unity gain inverting amplifiers, input = 100 mVrms at 1 kHz at M1 or M2 (see Table 1) PARAMETER MIN Step size Positive range Negative range 8 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 MAX UNIT ±1 dB 0.4 0.6 dB 3 4 dB – 4.5 – 3.5 dB Gain, MICTRIM = <1000> TCM8000 CELLULAR TELEPHONE AUDIO PROCESSOR SCTS041A – D4086, AUGUST 1992 – REVISED APRIL 1993 transmit path specifications, VCC = 5 V, fxtal = 3.58 MHz (continued) M1/M2 to TXO frequency response, NMT mode, TXLIM = 2.5 V, input = 20 mVrms, TXTRIM = <1000>, MICTRIM = <1000>, compressor bypassed (see Figures 3 and 4 and Table 1) PARAMETER TEST CONDITIONS Gain f = 1 kHz MIN MAX UNIT 11.5 13.5 dB f = 100 Hz Relative gain – 19 f = 300 Hz – 13.1 – 9.5 f = 500 Hz –7 –5 f = 2 kHz 5 7 f = 3 kHz 7.7 10.5 f = 3.4 kHz 6.6 11.6 f = 3.94 kHz dB – 40 f = 4.06 kHz – 40 f = 10 kHz – 16.5 M1/M2 to TXO frequency response, AMPS/TACS mode, TXLIM = 2.5 V, input = 20 mVrms, TXTRIM = <1000>, MICTRIM = <1000>, compressor bypassed (see Figures 5 and 6 and Table 1) PARAMETER TEST CONDITIONS Gain f = 1 kHz MIN MAX UNIT 11.5 13.5 dB f = 100 Hz f = 300 Hz – 13.1 – 9.5 f = 500 Hz –7 –5 f = 2 kHz Relative gain – 19 5 7 f = 2.75 kHz 6.8 9.8 f = 3 kHz 5.5 10.5 f = 3.1 kHz 10.8 f = 5.9 kHz – 25 f = 6.1 kHz – 25 f = 10 kHz – 19 dB TXSUM to TXO gain adjust, input = 100 mVrms at 1 kHz (see Table 1) PARAMETER MIN Step size Positive range Negative range MAX UNIT ±1 dB 0.4 0.6 dB 3 4 dB – 4.5 – 3.5 dB Gain, TXTRIM = <1000> compressor gain characteristics, M1/M2 to TXO, f = 1 kHz, MICTRIM = <1000> (see Figure 2 for external components) PARAMETER TEST CONDITIONS Gain (reference) M1/M2 = 100 mVrms M1/M2 = 100 mV+ 3 dB Relative gain MIN MAX 11 13 1 2 M1/M2 = 100 mV – 25 dB – 13 – 12 M1/M2 = 100 mV – 50 dB – 25.5 –24.5 UNIT dB dB TX limiter, peak-to-peak output at TXO relative to nominal output, M1/M2 = 1 Vrms at 1 kHz, MICTRIM = <1000>, compressor enabled, nominal output measured at TXO for 100 mVrms input at M1/M2 PARAMETER TEST CONDITIONS Peak-to-peak output POST OFFICE BOX 655303 MIN MAX TXLIM = 500 mV 1.25 TXLIM = 550 mV 1.35 TXLIM = 600 mV 1.45 TXLIM = 650 mV 1.55 TXLIM = 800 mV 1.85 • DALLAS, TEXAS 75265 UNIT V/V 9 TCM8000 CELLULAR TELEPHONE AUDIO PROCESSOR SCTS041A – D4086, AUGUST 1992 – REVISED APRIL 1993 transmit path specifications, VCC = 5 V, fxtal = 3.58 MHz (continued) total harmonic distortion at TXO vs TXLIM, M1/M2 = 100 mVrms at 1 kHz, MICTRIM = <1000>, TXTRIM = <1000>, compressor enabled PARAMETER TEST CONDITIONS Total harmonic distortion MIN MAX TXLIM = 500 mV 10% TXLIM = 550 mV 4% TXLIM = 600 mV 1% TXLIM = 800 mV 1% UNIT noise at TXO, M1/M2 = VBTX, MICTRIM = <1000>, TXTRIM = <1000>, compressor enabled (see Table 1) PARAMETER MIN Psophometrically-weighted rms noise MAX 4 UNIT mV transmit path switch attenuation (see Table 1) PARAMETER Attenuation TEST CONDITIONS MIN MICSW, HSS = 0/1 50 TDSW, TTS = 0/1 50 TXVOICE, TVM = 1 50 TXSUM, TSM = 1 50 TXDATA, TDM = 1 50 MAX UNIT dB TDI to TXO gain, TDI = 100 mVrms at 1 kHz, TXTRIM = <1000> (see Table 1) PARAMETER Gain MIN MAX 11 13 UNIT dB transmit data frequency response, NMT mode, TXDA = 275 mVrms, TXTRIM = <1000>(see Figure 7 and Table 1) PARAMETER TEST CONDITIONS Gain f = 1.5 kHz MIN MAX 2 4 f = 100 Hz Relative gain UNIT dB – 22 f = 700 Hz – 7.6 – 5.6 f = 2.1 kHz 1.9 2.9 f = 2.3 kHz 4.7 f = 3.5 kHz 4.7 f = 100 kHz – 25 dB transmit data frequency response, AMPS/TACS mode, TXDA = 400 mVrms, TXTRIM = <1000>(see Figure 8 and Table 1) PARAMETER TEST CONDITIONS Gain MAX f = 1 kHz ±1 f = 8 kHz ±1 f = 16 kHz Relative gain MIN –6 1 f = 30 kHz – 18 f = 100 kHz – 18 UNIT dB dB digital-to-analog converter, measured at DAC (see Table 1 for codes) PARAMETER MIN Output code <0000> 50 Output code <1111>, relative VBRX – 100 DNL, typical step size = 160 mV 10 MAX POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 UNIT mV 0 mV 0.5 LSB TCM8000 CELLULAR TELEPHONE AUDIO PROCESSOR SCTS041A – D4086, AUGUST 1992 – REVISED APRIL 1993 receive path specifications, VCC = 5 V, fxtal = 3.58 MHz RXIN to RXO, RXTRIM, RXIN = 100 mVrms at 1 kHz (see Table 1) MIN MAX Gain, RXTRIM = <1000> PARAMETER –7 –5 dB Step size 0.4 0.6 dB 3 4 dB – 4.5 – 3.5 dB Positive range Negative range UNIT RXIN to HFO/HSO frequency response, RXIN = 60 mVrms, RXTRIM = <1000>, VC = <1000>, expander bypassed (see Figures 9 and 10 and Table 1) PARAMETER TEST CONDITIONS MIN f = 1 kHz –7 Gain f = 100 Hz –5 UNIT dB – 30 f = 240 Hz Relative gain MAX 13.4 f = 300 Hz 7.9 f = 500 Hz 5 11.5 7 f = 2 kHz –7 –5 f = 3 kHz – 12 – 8.5 f = 3.4 kHz – 17 – 9.6 f = 4 kHz – 40 f = 10 kHz – 40 dB CTI to HFO/HSO, volume control, CTI = 100 mVrms at 1 kHz (see Table 1) PARAMETER Gain, VC = <1000> Step size Positive range Negative range MIN MAX 0 2 UNIT dB 1.8 2.2 dB 13.5 14.5 dB – 16.5 – 15.5 dB MIN MAX UNIT –7 –5 dB ±1 dB ST/TDI to HFO/HSO gain, ST/TDI = 100 mVrms at 1 kHz, VC = <1000> (see Table 1) PARAMETER Gain ST to HSO Gain to TDI to HSO/HFO expander gain characteristics, RXIN to HSO/HFO, f = 1 kHz, RXTRIM = <1000>, VC = <1000> (see Figure 2) PARAMETER TEST CONDITIONS Gain (reference) MIN RXIN = 200 mV + 3 dB Expanded relative gain RXIN = 200 mV – 12.5 dB RXIN = 200 mV – 25 dB MAX ±1 RXIN = 200 mVrms 2 4 – 13.5 – 11.5 – 23 – 21 UNIT dB dB RX limiter, peak-to-peak output at HSO vs RXLIM, RXIN = 500 mVrms at 1 kHz, RXTRIM = <1000>, VC = <1000>, expander enabled PARAMETER TEST CONDITIONS Peak-to-peak output POST OFFICE BOX 655303 MIN MAX RXLIM = 750 mV 1.6 RXLIM = 850 mV 1.8 RXLIM = 950 mV 2 • DALLAS, TEXAS 75265 UNIT VPP 11 TCM8000 CELLULAR TELEPHONE AUDIO PROCESSOR SCTS041A – D4086, AUGUST 1992 – REVISED APRIL 1993 receive path specifications, VCC = 5 V, fxtal = 3.58 MHz (continued) noise and distortion at HFO/HSO, RXTRIM = <1000>, VC = <1000>, expander enabled (see Table 1) PARAMETER MIN Psophometrically-weighted rms noise, RXIN = VBRX MAX 1 Total harmonic distortion, RXIN = 200 mV rms at 1 kHz UNIT mV 1% receive path switch attenuation (see Table 1) PARAMETER TEST CONDITIONS Attenuation MIN CTI, CTM = 1 50 TDI, RTM = 1 50 RXVOICE, RVM = 1 50 LSSW, HSS = 0/1 50 MAX UNIT dB receive data frequency response, NMT mode, RXIN = 100 mVrms, RXTRIM = <1000> (see Figure 11 and Table 1) PARAMETER TEST CONDITIONS Gain f = 1.5 kHz MIN MAX 8 10 f = 100 Hz dB – 10 f = 600 Hz Relative gain UNIT 5.4 f = 800 Hz 3.4 5.4 f = 900 Hz 3.4 5.4 f = 2.2 kHz – 4.3 f = 10 kHz dB – 2.3 – 15.5 receive data frequency response, AMPS/ TACS mode, RXIN = 100 mVrms, RXTRIM = <1000> (see Figure 12 and Table 1) PARAMETER TEST CONDITIONS Gain f = 1 kHz MIN MAX 5 7 Relative gain dB ±1 f = 8 kHz f = 16 kHz UNIT –6 1 f = 40 kHz – 18 f = 100 kHz – 18 dB receive SAT path frequency response, NMT mode, RXIN = 100 mVrms, RXTRIM = <1000>, SATTRIM = <100> (see Figure 13 and Table 1) PARAMETER TEST CONDITIONS Gain f = 4 kHz MIN MAX 3 5 f = 100 Hz – 35 f = 2 kHz – 35 f = 3.2 kHz – 25 f = 3.4 kHz f = 3.8 kHz Relative gain 12 POST OFFICE BOX 655303 0.5 ± 0.5 f = 4.06 kHz ± 0.5 –5 0.5 f = 5 kHz – 20 f = 6 kHz – 35 f = 10 kHz – 35 • DALLAS, TEXAS 75265 dB – 20 –5 f = 3.94 kHz f = 4.2 kHz UNIT dB TCM8000 CELLULAR TELEPHONE AUDIO PROCESSOR SCTS041A – D4086, AUGUST 1992 – REVISED APRIL 1993 receive path specifications, VCC = 5 V, fxtal = 3.58 MHz (continued) receive SAT path frequency response, AMPS/TACS mode, RXIN = 100 mVrms, RXTRIM = <1000>, SATTRIM = <100> (see Figure 15 and Table 1) PARAMETER TEST CONDITIONS Gain f = 6 kHz MIN MAX 3 5 f = 100 Hz – 35 f = 3 kHz – 35 f = 4.8 kHz – 25 f = 5.1 kHz f = 5.8 kHz Relative gain dB – 20 –5 0.5 f = 5.94 kHz ± 0.5 f = 6.06 kHz ± 0.5 f = 6.2 kHz UNIT –5 dB 0.5 f = 7.5 kHz – 20 f = 9 kHz – 35 f = 10 kHz – 35 receive SAT path trim, SATTRIM, RXIN = 100 mVrms, f at 4 kHz NMT, f at 6 kHz AMPS/TACS, RXTRIM = <1000> (see Table 1) PARAMETER MIN MAX 3 5 dB Step size 0.8 1.2 dB Positive range 2.5 3.5 dB – 4.5 – 3.5 dB Gain, SATTRIM = <100> Negative range POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 UNIT 13 100 nF 220 nF 100 nF 100 nF CTI 4 100 nF 18 RXIN 5 DATA 43 LOAD DCLK 22 TXDA 47 kΩ 100 nF POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 47 kΩ 23 25 M1N RXO 17 EXIN 15 ETC 13 14 EXO RXVI 12 CTI RXLIM ST DATA HSO LOAD HFO DCLK RXDO TXDA PSO M1O TCM8000 M1N DAC 24 100 nF 47 kΩ 47 kΩ 28 26 100 nF 1 19 VCC 10 100 nF 11 100 nF 9 100 nF 42 100 nF HSO HFO RXDO PSO 7 DAC 20 kΩ 3 Places 20 M1P 27 M2N M2O 500 Ω XT1 M2N M2P XT0 GND TXO VBTX VCC TDI POUT TXLIM CMPR TXVO CIN CTC CVE CO TXVI LIMIN TXSUM VBRX REF 3 2 44 29 30 31 32 33 34 35 36 100 nF 10 µF 8 38 39 37 21 3.58 MHz 40 TXO 100 nF 41 20 kΩ 220 nF 3 Places 100 nF 220 nF 100 nF GND 100 kΩ TDI 100 nF 47 pF 100 kΩ TXLIM 100 nF TXSUM Pin numbers shown are for the FN package only. Figure 2. Test Circuit 100 nF PARAMETER MEASUREMENT INFORMATION 6 RXIN 16 TCM8000 CELLULAR TELEPHONE AUDIO PROCESSOR 100 nF RXLIM SCTS041A – D4086, AUGUST 1992 – REVISED APRIL 1993 14 ST TCM8000 CELLULAR TELEPHONE AUDIO PROCESSOR SCTS041A – D4086, AUGUST 1992 – REVISED APRIL 1993 TYPICAL CHARACTERISTICS† TX PASS-BAND DETAIL – NMT 20 10 10 0 0 – 10 – 10 Relative Gain – dB Relative Gain – dB TX VOICE FREQUENCY RESPONSE – NMT 20 – 20 – 30 – 40 – 20 – 30 – 40 – 50 – 50 – 60 – 60 – 70 100 200 400 1000 2000 4000 – 70 100 10000 200 400 1000 2000 4000 10000 f – Frequency – Hz f – Frequency – Hz Figure 3 Figure 4 TX VOICE FREQUENCY RESPONSE – AMPS/ TACS TX PASS-BAND DETAIL – AMPS/ TACS 15 20 10 10 0 Relative Gain – dB Relative Gain – dB 5 – 10 – 20 – 30 – 40 0 –5 – 10 – 50 – 15 – 60 – 70 100 200 400 1000 2000 4000 10000 – 20 100 200 f – Frequency – Hz 400 1000 2000 4000 10000 f – Frequency – Hz Figure 5 Figure 6 † The boundaries of the shaded areas represent the frequency response limits met by the TCM8000. The curves in the unshaded areas represent typical filter response of the device. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 15 TCM8000 CELLULAR TELEPHONE AUDIO PROCESSOR SCTS041A – D4086, AUGUST 1992 – REVISED APRIL 1993 TYPICAL CHARACTERISTICS† TX DATA FREQUENCY RESPONSE – NMT TX DATA FREQUENCY RESPONSE – AMPS/ TACS 10 5 5 0 –5 –5 Relative Gain – dB Relative Gain – dB 0 – 10 – 15 – 20 – 10 – 15 – 20 – 25 – 25 – 30 100 200 1000 3000 10000 – 30 1000 40000 100000 2000 f – Frequency – Hz 4000 10000 20000 100000 f – Frequency – Hz Figure 7 Figure 8 PASS-BAND DETAIL – RX VOICE FREQUENCY RESPONSE RX VOICE FREQUENCY RESPONSE 20 15 10 10 0 Relative Gain – dB Relative Gain – dB 5 – 10 – 20 – 30 – 40 0 –5 – 10 – 50 – 15 – 60 – 70 100 200 400 1000 2000 4000 10000 – 20 100 200 f – Frequency – Hz 400 1000 2000 4000 10000 f – Frequency – Hz Figure 9 Figure 10 † The boundaries of the shaded areas represent the frequency response limits met by the TCM8000. The curves in the unshaded areas represent the filter response of the device. 16 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TCM8000 CELLULAR TELEPHONE AUDIO PROCESSOR SCTS041A – D4086, AUGUST 1992 – REVISED APRIL 1993 TYPICAL CHARACTERISTICS† RX DATA FREQUENCY RESPONSE – NMT RX DATA FREQUENCY RESPONSE – AMPS/ TACS 5 10 0 5 –5 Relative Gain – dB Relative Gain – dB 0 –5 – 10 – 15 – 10 – 15 – 20 – 25 – 20 100 200 400 1000 2000 4000 – 30 1000 10000 2000 4000 f – Frequency – Hz 10000 20000 100000 f – Frequency – Hz Figure 11 Figure 12 RX SAT FREQUENCY RESPONSE – NMT RX PASS-BAND DETAIL – NMT 10 1 0 0 – 10 Relative Gain – dB Relative Gain – dB –1 – 20 – 30 –2 –3 –4 –5 –6 – 40 –7 – 50 –8 – 60 0 2000 4000 6000 8000 10000 –9 3500 f – Frequency – Hz 3700 3900 4100 4300 4500 f – Frequency – Hz Figure 13 Figure 14 † The boundaries of the shaded areas represent the frequency response limits met by the TCM8000. The curves in the unshaded areas represent the filter response of the device. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 17 TCM8000 CELLULAR TELEPHONE AUDIO PROCESSOR SCTS041A – D4086, AUGUST 1992 – REVISED APRIL 1993 TYPICAL CHARACTERISTICS† RX SAT FREQUENCY RESPONSE – AMPS/ TACS RX PASS-BAND DETAIL – AMPS/ TACS 10 1 0 0 – 10 Relative Gain – dB Relative Gain – dB –1 – 20 – 30 –2 –3 –4 –5 –6 – 40 –7 – 50 –8 – 60 0 2000 4000 6000 8000 10000 –9 5500 f – Frequency – Hz 5700 5900 6100 6300 6500 f – Frequency – Hz Figure 15 Figure 16 † The boundaries of the shaded areas represent the frequency response limits met by the TCM8000. The curves in the unshaded areas represent the filter response of the device. 18 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability. TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. 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