SM5865BM
AC Analog Characteristics
Measurement Conditions
External 8fs digital filter
External operational amplifier
Supply voltage
: NPC SM5847AF
: JRC NJM5534D
:
+
3V
:
±
15V
: 25
°C
: 48kHz sampling (fs), 24-bit data
: 24.576MHz (512fs)
64fs
: Audio Precision System Two (RMS mode)
: THD
+
N
: D.R
: S/N
22HzHPF, 20kHzLPF (FLP-A20K)
22HzHPF, 22kHzLPF, A-weight (FIL-AWT)
22HzHPF, 22kHzLPF, A-weight (FIL-AWT)
SM5865BM : DV
DD
=
AV
DDA
=
AV
DDB
=
5V, DV
SS
=
AV
SSA
=
AV
SSB
=
CV
SS
=
0V
SM5847AF
NJM5534D
Ambient temperature
Input data of SM5847AF
System clock
Noise shaper operating rate
Audio analyzer
Measurement filter condition
Measurement circuits diagram : See next page.
Analog Characteristics
Rating
P arameter
Output level
1
Total harmonic distortion
Dynamic range
Signal-to-noise ratio
Gain drift
Symbol
V
out
THD
+
N
D.R
S/N
G.D
Condition
min
1 kHz, 0 dB
1 kHz, 0 dB
1 kHz,
−60
dB
1 kHz, 0/−∞ dB
1.22
–
108
114
–
typ
1.27
0.0004
(− 108dB)
114
117
10
max
1.32
0.0009
(− 101dB)
–
–
–
Vr m s
%
dB
dB
ppm/°C
Unit
1. V
O U T
is the output level of the first I–V conversion stage.
Group Delay
Rating
P arameter
Group delay
1
Symbol
T
gd
Condition
min
–
typ
–
max
2/fsi
s
Unit
1. fsi is the input sampling rate of S M 5 8 6 5 B M .
For example, fsi is 384kHz when this LSI is used in combination with an 8-times oversampling digital filter of whinch input sampling rate is 48kHz.
NIPPON PRECISION CIRCUITS—8
NPC [ NIPPON PRECISION CIRCUITS INC ]
