SI3000 datasheet(5/36 Pages) ETC1

Numer części	SI3000

Szczegółowy opis	VOICEBAND CODEC WITH MICROPHONE/SPEAKER DRIVE

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Si3000

Rev. 1.1

5

Table 4. AC Characteristics

(VA, VD = 5 V ±5% or 3.3 V ±10%, TA = 0°C to 70°C for K-grade)

Parameter

Symbol

Test Condition

Min

Typ

Max

Unit

ADC Resolution

—16

—

Bits

ADC Dynamic Range1,2

ADCDR

VIN = 1 kHz, –3 dB

80

84

—

dB

ADC Total Harmonic Distortion3

ADCTHD

VIN = 1 kHz, –3 dB, MIC/LINEI

—

–80

–62

dB

VA, VD = 3.3 V ±10%

VIN = 1 kHz, –3 dB, HDST

—

–80

–62

ADC Total Harmonic Distortion3

ADCTHD

VIN = 1 kHz, –3 dB, MIC/LINEI

—

–80

–76

dB

VA, VD = 5 V ±5%

VIN = 1 kHz, –3 dB, HDST

—

–80

–71

ADC Full Scale Level (0 dB gain)4

VRX

Vin = 1 kHz

—

1

—

Vrms

ADC Programmable Input Gain

–36

—

12

dB

ADC Input Gain Step Size

—

1.5

—

dB

ADC Freq Response5

FRR

Low –3 dB corner

—

33

—

Hz

ADC Freq Response5

FRR

300 Hz

–0.1

—

0

dB

ADC Freq Response

FRR

3400 Hz

–0.2

—

0

dB

Line In Preamp Gain

—

0/10/20

—

dB

Mic In Preamp Gain

—

0/10/20/

30

—dB

ADC Input Resistance

0 dB Preamp Gain

—

20

—

k

Ω

ADC Input Capacitance

—

15

—

pF

ADC Gain Drift

AT

VIN = 1 kHz

—

0.002

—

dB/°C

DAC Resolution

—16

—

Bits

DAC Dynamic Range1,2

DACDR

VIN = 1 kHz, –6 dB

80

84

—

dB

DAC Total Harmonic Distortion3

DACTHD

VIN=1 kHz,–6 dB,LINEO,600

Ω

—

–76

–60

dB

VA, VD = 3.3 V ±10%

VIN=1 kHz,–6 dB, SPKR, 60

Ω

—

–72

–60

VIN=1 kHz,–6 dB, HDST, 600

Ω

—

–80

–70

DAC Total Harmonic Distortion3

DACTHD

VIN=1 kHz,–3 dB,LINEO,600

Ω

—

–76

–65

dB

VA, VD = 5 V ±5%

VIN=1 kHz,–3 dB, SPKR, 60

Ω

—

–72

–65

VIN=1 kHz,–3 dB, HDST, 600

Ω

—

–80

–76

DAC Full Scale Level (0 dB gain)

VRX

—1

—

Vrms

DAC Programmable Output Gain

–36

—

12

dB

Notes:

1. DR = VIN + 20 log (RMS signal/RMS noise). Measurement bandwidth is 300 to 3400 Hz. Valid sample rate ranges

between 4000 and 12000 Hz.

2. 0 dB setting for analog and digital attenuation/gain.

3. THD = 20 log (RMS distortion/RMS signal). Valid sample rate ranges between 4000 and 12000 Hz.

4. At 0dB gain setting, 1 Vrms input corresponds to -1.5 dB of full scale digital output code.

5. These characteristics are determined by external components. See Figure 13.

6. With a 600

Ω load. Output starts clipping with half of full scale digital input, which corresponds to a 0.5 V

rms output.

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