Datasheet

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ELECTRICAL CHARACTERISTICS
PCM3052A
SLES160 – NOVEMBER 2005
All specifications at T
A
= 25 ° C, V
CC
1 = V
CC
2 = V
CC
3 = 5 V, V
DD
= 3.3 V, f
S
= 48 kHz, SCKI = 256 f
S
, 24-bit data, unless
otherwise noted
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
DIGITAL INPUT/OUTPUT – DATA FORMAT
Audio data interface format I
2
S
Audio data bit length 24 Bits
Audio data format MSB-first, 2s complement
Sampling frequency, ADC 16 48 96 kHz
f
S
Sampling frequency, DAC 16 48 96 kHz
System clock frequency 256 f
S
4 25 MHz
INPUT LOGIC
V
IH
(1)
2 V
DD
Input logic level VDC
V
IL
(1)
0.8
V
IH
(2) (3)
2 5.5
Input logic level VDC
V
IL
(2) (3)
0.8
I
IH
(2)
V
IN
= V
DD
± 10
Input logic current µ A
I
IL
(2)
V
IN
= 0 V ± 10
I
IH
(1)(3)
V
IN
= V
DD
65 100
Input logic current µ A
I
IL
(1) (3)
V
IN
= 0 V ± 10
OUTPUT LOGIC
V
OH
(4)
I
OUT
= –4 mA 2.8
VDC
V
OL
(4) (5)
I
OUT
= 4 mA 0.5
Output logic level
V
OH
(6)
I
OUT
= –0.3 mA 4.5
VDC
V
OL
(6)
I
OUT
= 0.3 mA 0.5
MICROPHONE AMPLIFIER
Input level Single-ended 1 15 mVrms
Gain Single-ended 40 dB
Input resistance Single-ended 5 6 k Ω
Frequency response –3 dB 20 kHz
SNR 1-kHz, 100-mVrms output 59 dB
THD+N 1-kHz, 1-Vrms output –77 dB
MICROPHONE BIAS GENERATOR
0.75 V
CC
1 0.75 V
CC
1
Output voltage I
OUT
= –1 mA 0.75 V
CC
1 V
– 0.15 + 0.15
Output source current 1 mA
Output impedance 48 Ω
Output noise voltage 100 Hz–20 kHz, with 10- µ F 1.8 µ Vrms
decoupling
REFERENCE OUTPUT
0.5 V
CC
1 0.5 V
CC
1
Output voltage I
OUT
= ± 10 mA 0.5 V
CC
1 V
– 0.15 + 0.15
Output source/sink current 10 mA
Output impedance 6 Ω
Output noise voltage 100 Hz–20 kHz, with 10- µ F 1.8 µ Vrms
decoupling
(1) Pins 10, 11: LRCK, BCK (Schmitt-trigger input with 50-k Ω typical internal pulldown resistor)
(2) Pins 12, 17, 18, 19, 21: DIN, SCKI, SDA, SCL, I2CEN (Schmitt-trigger input, 5-V tolerant)
(3) Pins 9, 20 : PDWN, ADR (Schmitt-trigger input with 50-k Ω typical internal pulldown resistor, 5-V tolerant).
(4) Pins 13, 14: DOUT, DOUTS
(5) Pin 18: SDA (Open-drain LOW output)
(6) Pin 3: L/ M
3