PCM1800 Burr-Brown Corporation, PCM1800 Datasheet
PCM1800
Available stocks
Related parts for PCM1800
PCM1800 Summary of contents
Page 1
... Burr-Brown Corporation 49% FPO DESCRIPTION ADC PCM1800 is a low cost, single chip stereo analog-to- digital converter with single-ended analog voltage inputs. The PCM1800 uses a delta-sigma modulator with 64X oversampling, including a digital decima- tion filter and serial interface which supports both Master and Slave Modes and four data formats ...
Page 2
... EIAJ, A-weighted 16-Bit, A-weighted 16-Bit, A-weighted 16-Bit 0dB 470pF, –3dB EXT –3dB + + + unless otherwise noted. S PCM1800E MIN TYP MAX UNITS 20 2.0 0.8 1 +100 4.5 0.5 32 44.1 48 8.1920 11.2896 12.2880 12.2880 16.9344 18.4320 16.3840 22.5792 24.5760 1.0 2 FSR 2.0 5 ...
Page 3
... Digital Power Supply — Anti-alias Filter Capacitor (–), Rch — Anti-alias Filter Capacitor (+), Rch — Anti-alias Filter Capacitor (–), Lch — Anti-alias Filter Capacitor (+), Lch — Analog Power Supply — Analog Ground typical pull-down resistor. PCM1800 (1) (1) ( 512f S S ® ...
Page 4
... Power Supply V AGND CC ANALOG FRONT-END (Single-Channel) 1.0µF 30k REF 4 + 4.7µF REFCOM 3 4.7µ REF 2 ® PCM1800 (+) 5th-Order Delta-Sigma Modulator (–) x1/64 Decimation and High Pass Filter (–) 5th-Order Delta-Sigma Modulator (+) DGND REF 4 ADC BCK LRCK Serial Data Interface FSYNC ...
Page 5
... S 5 SNR, DYNAMIC RANGE vs TEMPERATURE Dynamic Range SNR Temperature (°C) SNR and DYNAMIC RANGE vs POWER SUPPLY Dynamic Range SNR 4.5 4.75 5.0 5.25 5.50 Supply Voltage (V) THD+N vs OUTPUT DATA RESOLUTION –60dB –0.5dB 16-Bit 20-Bit Resolution PCM1800 4.0 3.0 2.0 1.0 0 100 4.0 3.0 2.0 1.0 0 ® ...
Page 6
... PCM1800 (CONT) , unless otherwise noted –5 –10 –15 –20 –25 –30 –35 –40 –45 –50 –55 –60 –65 –70 –75 – ...
Page 7
... Hz) S 0.2 0.0 –0.2 –0.4 –0.6 –0.8 –1.0 0.3 -0.35 0.4 /1000Hz STOPBAND ATTENUATION CHARACTERISTICS 0 0.25 0.50 0.75 Normalized Frequency (x f Hz) S TRANSIENT BAND CHARACTERISTICS 0.46 0.47 0.48 0.49 0.50 0.51 0.52 0.53 0.54 0.55 Normalized Frequency (x f Hz) S HIGH PASS FILTER RESPONSE 0 0.5 1.0 1.5 2.0 2.5 3.0 Normalized Frequency (x f /1000Hz) S PCM1800 1.00 3.5 4.0 ® ...
Page 8
... TYPICAL PERFORMANCE CURVES ANTI-ALIASING FILTER ANTI-ALIASING FILTER OVERALL FREQUENCY RESPONSE (C EXT 0 –10 –20 –30 –40 – 100 1k 10k Frequency (Hz) ® PCM1800 = 470pF, 1000pF) 0.2 470pF 0.0 –0.2 –0.4 –0.6 1000pF –0.8 –0.1 100k 1M 10M 8 ANTI-ALIASING FILTER PASSBAND FREQUENCY RESPONSE (C = 470pF, 1000pF) EXT ...
Page 9
... X(z) + 1st SW-CAP + Integrator – 1-Bit DAC FIGURE 1. Simplified Diagram of the PCM1800 5th-Order Delta-Sigma Modulator. SYSCLK FIGURE 2. System Clock Timing. The 64f , 1-bit stream from the modulator is converted 20-bit digital data by the decimation filter, which also S acts as a low pass filter to remove the shaped quantization noise ...
Page 10
... The frequency of BCK is fixed at 64X LRCK. Slave Mode In Slave Mode, BCK, LRCK, and FSYNC are input pins. FSYNC is used to enable BCK signal, and the PCM1800 can shift out the converted data when FSYNC is HIGH. Reset 1024 System Clock Periods ...
Page 11
... MSB FIGURE 5. Audio Data Format (Slave Mode: FSYNC, LRCK, and BCK are inputs). DATA FORMAT PCM1800 supports four audio data formats in both Master and Slave Modes, and are selected by FMT1 (pin 9) and FMT0 (pin 8), as shown in Table III. L– ...
Page 12
... MSB FORMAT 3: FMT[1:0] = “11” 20-Bit, MSB-First, Right-Justified FSYNC LRCK BCK DOUT 20 MSB FIGURE 6. Audio Data Format (Master Mode: FSYNC, LRCK, and BCK are outputs). ® PCM1800 L– LSB MSB L- LSB MSB L– LSB L– ...
Page 13
... Rising and falling time is measured from 10 1.4V t FSHD 1.4V 1.4V t LRDO 0.5V DD TYP MAX UNITS 0.5V DD 0. LRDO 0.5V DD TYP MAX UNITS 1/64f 600 ns S 300 ns 300 1 1 PCM1800 ® ...
Page 14
... V PINS CC DD The digital and analog power supply lines to the PCM1800 should be bypassed to the corresponding ground pins with both 0.1 F ceramic and 10 F tantalum capacitors as close to the pins as possible to maximize the dynamic performance of the ADC. Although PCM1800 has two power lines to ...
Page 15
... DOUT, BCK, LRCK, FSYNC PINS The DOUT, BCK, LRCK and FSYNC pins in Master Mode have a large load drive capability, but locating the buffer near the PCM1800 and minimizing the load capacitance is recommended in order to minimize the digital analog crosstalk and to maximize dynamic performance potential. ...