AK5394AVSP AKM Semiconductor Inc, AK5394AVSP Datasheet - Page 22
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AK5394AVSP
Manufacturer Part Number
AK5394AVSP
Description
IC ADC AUDIO STER 24BIT 28VSOP
Manufacturer
AKM Semiconductor Inc
Type
ADCr
Datasheet
1.AK5394AVSP.pdf
(25 pages)
Specifications of AK5394AVSP
Resolution (bits)
24 b
Sampling Rate (per Second)
1k ~ 216k
Data Interface
Serial
Voltage Supply Source
Analog and Digital
Voltage - Supply
3.3V, 5V
Operating Temperature
-10°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
28-SOIC (0.300", 7.50mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
974-1038-2
AK5394AVSP
AK5394AVSP
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AK5394AVSP-E2
Manufacturer:
AKM Semiconductor Inc
Quantity:
1 997
Company:
Part Number:
AK5394AVSP-E2
Manufacturer:
Maxim
Quantity:
20
ASAHI KASEI
6. Noise floor of AK5394A
The AK5394A has a sprious noise of about −135dBFS on the noise floor of Lch output at no signal input. When this noise
causes a trouble in system, it can be removed by adding a minute offset to the analog inputs of both channels externally
using a circuit as Figure 13. The relationship between the frequency range (f
adding offset voltage (V
A resistor, R in Figure 13 should be 8Ω to add an offset of 2mV to the analog inputs. The relationship between R and V
is shown by the following equation.
An offset voltage of the op-amps should be considered in the actual circuit. For example, when removing the sprious
noise of 20kHz or less, the adding offset voltage should be 2+2=4mV if the op-amp has an offset of +/−2mV. In this case,
the dynamic range of the ADC output decreases 4mV.
MS0137-E-03
10k
10k
R
5V
10
+
µ
0.1
of
Bias+
Bias-
µ
) is f
T
[kHz] = 20 x V
Table 10. Sprious noise Frequency vs. Offset voltage
Sprious noise Frequency
Vin+
Figure 13. Removing the sprious noise circuit
0 ∼ 20kHz
0 ∼ 40kHz
0 ∼ 80kHz
Vin-
of
V
68µ
68µ
XLR
[mV] − 20. The example is shown in Table 10.
of
=
Bias+
20
3.3k
3.3k
- 22 -
Bias-
k
R
+
NJM5534
NJM5534
R
+
-
-
+
×
620
620
1n
[ 5
1n
Offset Voltage
V
]
+2mV
+3mV
+5mV
91
91
T
) of the sprious noise to be removed and the
2.2n
AK5394A AIN-
AK5394A AIN+
[AK5394A]
2005/05
of