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REV. 0
AD1833A
–7–
DEFINITION OF TERMS
Dynamic Range
The ratio of a full-scale input signal to the integrated input noise in
the pass band (20 Hz to 20 kHz), expressed in decibels. Dynamic
range is measured with a –60 dB input signal and is equal to
(S/[THD + N]) +60 dB. Note that spurious harmonics are below
the noise with a –60 dB input, so the noise level establishes the
dynamic range. The dynamic range is specified with and without
an A-Weight filter applied.
Signal to (Total Harmonic Distortion + Noise)
[S/(THD + N)]
The ratio of the root-mean-square (rms) value of the fundamental
input signal to the rms sum of all other spectral components in
the pass band, expressed in decibels.
Pass Band
The region of the frequency spectrum unaffected by the attenuation
of the digital decimator’s filter.
Pass-Band Ripple
The peak-to-peak variation in amplitude response from equal-
amplitude input signal frequencies within the pass band, expressed
in decibels.
Stop Band
The region of the frequency spectrum attenuated by the digital
decimator’s filter to the degree specified by stop-band attenuation.
Gain Error
With a near full-scale input, the ratio of actual output to expected
output, expressed as a percentage.
Interchannel Gain Mismatch
With identical near full-scale inputs, the ratio of outputs of the
two stereo channels, expressed in decibels.
Gain Drift
Change in response to a nearly full-scale input with a change in
temperature, expressed as parts-per-million (ppm/
∞
C).
Crosstalk (EIAJ Method)
Ratio of response on one channel with a grounded input to a
full-scale 1 kHz sine wave input on the other channel, expressed
in decibels.
Power Supply Rejection
With no analog input, signal present at the output when a
300 mV p-p signal is applied to the power supply pins, expressed
in decibels of full scale.
Group Delay
Intuitively, the time interval required for an input pulse to appear
at the converter’s output, expressed in ms. More precisely, the
derivative of radian phase with respect to the radian frequency at
a given frequency.
Group Delay Variation
The difference in group delays at different input frequencies.
Specified as the difference between the largest and the smallest
group delays in the pass band, expressed in
m
s.
PIN FUNCTION DESCRIPTIONS (continued)
Pin No.
Mnemonic IN/OUT
Description
40
42
OUTRP3
FILTR
O
DAC 3 Right Channel Positive Output.
Reference/Filter Capacitor Connection. Recommend 0.1
m
F/10
m
F decouple to
analog ground.
Filter Capacitor Connection. Recommend 0.1
m
F/10
m
F decouple to analog ground.
DAC 3 Left Channel Positive Output.
DAC 3 Left Channel Negative Output.
DAC 2 Left Channel Positive Output.
DAC 2 Left Channel Negative Output.
43
45
46
47
48
FILTD
OUTLP3
OUTLN3
OUTLP2
OUTLN2
O
O
O
O
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