AKD4345 View Datasheet(PDF) - Asahi Kasei Microdevices

Part Name

Description

Manufacturer

AKD4345

100dB 96kHz 24-Bit Stereo 3.3V ΔΣDAC with DIT

Asahi Kasei Microdevices 

[AK4345]

ANALOG CHARACTERISTICS

(Ta=25°C; VDD=3.3V; VSS=0V; fs=44.1kHz, 96kHz; BICK=64fs; Signal Frequency=1kHz; 24bit Data;

Measurement frequency=20Hz ∼ 20kHz at fs=44.1kHz, 20Hz ∼ 40kHz at fs=96kHz; unless otherwise specified)

Parameter

min

typ

max

Units

Dynamic Characteristics (GAIN bit= “1”) :

Resolution

24

Bits

THD+N

fs=44.1kHz

0dBFS

-90

-80

dB

BW=20kHz −60dBFS

−37

-

dB

fs=96kHz

BW=40kHz

0dBFS

−60dBFS

-88

-

dB

−34

-

dB

DR

(−60dBFS with A-weighted)

92

100

dB

S/N

(A-weighted)

92

100

dB

Interchannel Isolation

80

100

dB

DC Accuracy:

Interchannel Gain Mismatch

Gain Drift

Output Voltage: GAIN bit= “1”

Output Voltage: GAIN bit=“0”

Load Resistance

Load Capacitance

0.2

0.5

dB

100

-

ppm/°C

(Note 3) 2.60

2.8

3.0

Vpp

(Note 4) 2.05

2.2

2.35

Vpp

(Note 5) 10

kΩ

25

pF

Power Supplies

Power Supply Current

Normal Operation (PDN pin = “H”, fs=44.1kHz)

(Note 6)

7.0

mA

Normal Operation (PDN pin = “H”, fs=96kHz)

(Note 6)

8.5

12.8

mA

Full Power-down mode (PDN pin = “L”)

(Note 7)

10

50

μA

Note 3. Full-scale voltage (0dB). Output voltage scales with the voltage of VDD, Vout = 0.85 × VDD (typ).

Note 4. Full-scale voltage (0dB). Output voltage scales with the voltage of VDD, Vout = 0.67 × VDD (typ).

Note 5. For AC-load.

Note 6. RSTN bit= “1”, PW bit= “1”, TX pin: open. When TX pin = 20pF, power supply current (IDD@3.3V) is

9.0mA(typ)@fs= 96kHz.

Note 7. All digital input pins are fixed to VDD or VSS.

MS0635-E-01

-6-

2010/09

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