Datasheet
ELECTRICAL CHARACTERISTICS
PCM1800
SBAS071B – OCTOBER 2000 – REVISED AUGUST 2008 ...............................................................................................................................................
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This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
All specifications at T
A
= 25 ° C, V
DD
= V
CC
= 5 V, slave mode, f
S
= 44.1 kHz, 20-bit input data, and SYSCLK = 384 f
S
, unless
otherwise noted
PCM1800E
PARAMETER TEST CONDITIONS UNITS
MIN TYP MAX
RESOLUTION 20 Bits
DIGITAL INPUT/OUTPUT
V
IH
(1)
2
Input logic level VDC
V
IL
(1)
0.8
I
IN
(2)
± 1
Input logic current µ A
I
IN
(3)
100
V
OH
(4)
I
OH
= – 1.6 mA 4.5
Output logic level VDC
V
OL
(4)
I
OL
= 3.2 mA 0.5
f
S
Sampling frequency 4 44.1 48 kHz
256 f
S
1.024 11.2896 12.288
System clock frequency 384 f
S
1.536 16.9344 18.432 MHz
512 f
S
2.048 22.5792 24.576
DC ACCURACY
Gain mismatch, channel-to-channel ± 1 ± 2.5 % of FSR
Gain error ± 2 ± 5 % of FSR
Gain drift ± 20 ppm of FSR/ ° C
Bipolar zero error High-pass filter bypassed ± 2 % of FSR
Bipolar zero drift High-pass filter bypassed ± 20 ppm of FSR/ ° C
DYNAMIC PERFORMANCE
(5)
THD+N at FS ( – 0.5 dB) – 88 – 80 dB
THD+N at – 60 dB – 92 dB
Dynamic range A-weighted 90 95 dB
Signal-to-noise ratio A-weighted 90 95 dB
Channel separation 88 93 dB
DYNAMIC PERFORMANCE
(5)
Dynamic range 16-bit, A-weighted 94 dB
Signal-to-noise ratio 16-bit, A-weighted 94 dB
Channel separation 16-bit 92 dB
ANALOG INPUT
Input range FS (V
IN
= 0 dB) 2.828 Vp-p
Center voltage 2.1 VDC
Input impedance 30 k Ω
Antialiasing filter frequency response C
EXT
= 470 pF, – 3 dB 170 kHz
DIGITAL FILTER PERFORMANCE
(1) Pins 6, 7, 8, 9, 10, 11, 16 and 12, 13, 14: RSTB, BYPAS, FMT0, FMT1, MODE0, MODE1, SYSCLK, and FSYNC, LRCK, BCK in slave
mode
(2) Pins 16 and 12, 13, 14: SYSCLK and FSYNC, LRCK, BCK in slave mode (Schmitt-trigger input)
(3) Pins 6, 7, 8, 9, 10, 11: RSTB, BYPAS, FMT0, FMT1, MODE0, MODE1 (Schmitt-trigger input, with 100-k Ω typical pulldown resistor)
(4) Pins 15 and 12, 13, 14: DOUT and FSYNC, LRCK, BCK in master mode
(5) f
IN
= 1 kHz, using the System Two™ audio measurement system by Audio Precision™, rms mode with 20-kHz LPF and 400-Hz HPF in
the performance calculation.
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Product Folder Link(s): PCM1800