AK4620BVFP-E2 datasheet(8/42 Pages) ETC2

Part #	AK4620BVFP-E2

Description	24-Bit 192kHz Audio CODEC with IPGA

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ASAHI KASEI

[AK4620B]

MS0401-E-00

2005/07

- 8 -

Note 6. Full scale (0dB) of the input voltage at PGA=0dB.

This voltage is proportional to VREF. Vin(typ) = 3.07Vpp x VREF/5.

Note 7. These values become smaller when a gain of IPGA is large.

IPGA=0dB; typ. 5.1k

Ω, IPGA=+18dB; typ. 1.18kΩ

Note 8. PSR is applied to VA, VD, VT with 1kHz, 50mVpp. VREF pin is held a constant voltage.

Note 9. Full scale (0dB) of the input voltage at 0dB. This voltage is proportional to VREF.

Vin (typ) =

±2.82Vpp x VREF/5.

ANALOG CHARACTERISTICS (DAC)

(Ta=25

°C; VA=5V, VD=3.3V, VT=5V; AGND=DGND=0V; VREF=VA; fs=44.1kHz; Signal Frequency =1kHz; 24bit

Data; Measurement frequency=20Hz

∼ 20kHz at fs=44.1kHz, 40Hz ∼ 40kHz at fs=96kHz, 40Hz ∼ 40kHz at fs=192kHz;

unless otherwise specified)

DAC Analog Output Characteristics:

Parameter

min

typ

max

Units

Resolution

24

Bits

Dynamic Characteristics

fs=44.1kHz

BW=20kHz

0dBFS

−60dBFS

87

-

97

52

dB

fs=96kHz

BW=40kHz

0dBFS

−60dBFS

-

97

49

dB

S/(N+D)

fs=192kHz

BW=40kHz

0dBFS

−60dBFS

-

97

49

dB

Dynamic Range (

−60dBFS with A-weighted) (Note 10, Note 11)

-

115

dB

S/N

(A-weighted) (Note 11, Note 12)

107

115

dB

Interchannel Isolation (1kHz)

90

110

dB

DC Accuracy

Interchannel Gain Mismatch

0.15

0.3

dB

Gain Drift

(Note 13)

20

-

ppm/

°C

Output Voltage

(Note 14)

±2.6

±2.8

±3.0

Vpp

Load Capacitance

25

pF

Load Resistance

(Note 15)

3

k

Ω

Note 10. 100dB at 16bit data and 114dB at 20bit data.

Note 11. By Figure 19. External LPF Circuit Example 2 for PCM.

Note 12. S/N does not depend on input bit length.

Note 13. The voltage on VREF is held +5V externally.

Note 14. Full-scale voltage(0dB). Output voltage scales with the voltage of VREF.

AOUT (typ.@0dB) = (AOUT+) - (AOUT-) = 5.6Vpp x VREF/5.

Note 15. For AC-load.

Parameter

min

typ

max

Units

Power Supplies

Power Supply Current

Normal Operation (PDN pin = “H”)

VA: ADC Single-ended Mode

ADC Differential Mode

60

55

90

83

mA

VD+VT (fs=44.1kHz)

(fs=96kHz)

(fs=192kHz)

11

21

27

-

41

mA

Power-down mode (PDN pin = “L”)

(Note 16)

VA

VD+VT

10

100

µA

Note 16. All digital input pins are held VT or DGND.

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