ASAHI KASEI

[AK5365]

MS0164-E-01

2002/08

- 7 -

ANALOG CHARACTERISTICS

(Ta=25

°C; AVDD=5.0V, DVDD=3.3V; AVSS=DVSS=0V; fs=48kHz, 96kHz; BICK=64fs; Signal Frequency=1kHz;

24bit Data; Measurement frequency=20Hz

∼ 20kHz at fs=48kHz, 40Hz ∼ 40kHz at fs=96kHz; unless otherwise specified)

Parameter

min

typ

max

Units

Pre-Amp Characteristics:

Feedback Resistance

10

50

k

Ω

S/(N+D)

(Note 4)

-

100

dB

S/N (A-weighted)

-

108

dB

Load Resistance

(Note 5)

6.3

k

Ω

Load Capacitance

20

pF

Input PGA Characteristics:

Input Voltage

(Note 6)

0.9

1

1.1

Vrms

Input Resistance

(Note 7)

6.3

10

15

k

Ω

Step Size

0.2

0.5

0.8

dB

Gain Control Range

ALC = OFF

ALC = ON

0

−9.5

+12

+12

dB

dB

ADC Analog Input Characteristics:

IPGA=0dB, ALC = OFF

(Note 8)

Resolution

24

Bits

S/(N+D)

(

−0.5dBFS)

fs=48kHz

fs=96kHz

84

82

94

92

dB

dB

DR

(

−60dBFS)

fs=48kHz, A-weighted

fs=96kHz

96

89

103

99

dB

dB

S/N

fs=48kHz, A-weighted

fs=96kHz

96

89

103

99

dB

dB

Interchannel Isolation

(Note 9)

90

110

dB

Interchannel Gain Mismatch

0.2

0.5

dB

Gain Drift

100

-

ppm/

°C

Power Supply Rejection

(Note 10)

50

-

dB

Power Supplies

Power Supply Current

Normal Operation (PDN pin = “H”)

AVDD

DVDD

(fs=48kHz)

(fs=96kHz)

Power-down mode (PDN pin = “L”)

(Note 11)

AVDD

DVDD

23

4

8

10

10

35

8

16

100

100

mA

mA

mA

µA

µA

Note 4. This value is measured at LOUT and ROUT pins using the circuit as shown in Figure 24.

The input signal voltage is 2Vrms.

Note 5. This value is the input impedance of an external device that the LOUT and ROUT pins can drive, when a device is

connected with LOUT and ROUT pin externally. The feedback resistor (min. 10k

Ω) that it is usually connected

with the LOUT/ROUT pins, and the value of input impedance (min. 6.3k

Ω) of the IPGAL/R pins are not included.

Note 6. Full scale (0dB) of the input voltage at ALC=OFF and IPGA=0dB.

Input voltage to IPGAL and IPGAR pins is proportional to AVDD voltage. Vin = 0.2 x AVDD (Vrms).

Note 7. This value is input impedance of the IPGAL and IPGAR pins.

Note 8. This value is measured via the following path. Pre-Amp

→ IPGA (Gain : 0dB) → ADC.

The measurement circuit is Figure 24.

Note 9. This value is the interchannel isolation between all the channels of the LIN1-5 and RIN1-5 when the applied input

signal causes the Pre-Amp output to equal IPGA input.

Note 10. PSR is applied to AVDD and DVDD with 1kHz, 50mVpp.

Note 11. All digital input pins are held DVDD or DVSS.