max9856 Maxim Integrated Products, Inc., max9856 Datasheet - Page 13

• Manufacturer Part Number: max9856
• Description: Max9856 Low-power Audio Codec With Directdrive Headphone Amplifiers
• Manufacturer: Maxim Integrated Products, Inc.

(V
=1µF, V
AVDD
-100
-120
-140
-100
-120
-140
-110
-130
-150
-20
-40
-60
-80
-20
-40
-60
-80
-10
-30
-50
-70
-90
20
20
10
0
0
SYNCHRONOUS MASTER MODE (-60dBFS)
SYNCHRONOUS MASTER MODE, -60dBFS
WIDEBAND FFT, DAC TO HP AMP, 48kHz
10
0
0
AVPRE
= V
ASYNCHRONOUS SLAVE MODE (0dBFS)
CPVDD
FFT, LINE IN TO ADC (48kHz)
FFT, LINE IN TO ADC (48kHz)
100
= +20dB, C
5k
5k
= V
1k
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
______________________________________________________________________________________
DVDDS2
10k
10k
10k
MCLK = 11.2896MHz
LRCLK = 48kHz
PCLK/2
MICBIAS
MCLK = 12.288MHz
LRCLK = 48kHz
PCLK/2
100k
= V
15k
15k
C1 = 4.7μF
DVDD
= 1µF, V
1M
DirectDrive Headphone Amplifiers
= 1.8V, R
10M
20k
20k
AVMICPGA
HP
Typical Operating Characteristics (continued)
-100
-120
-140
-100
-120
-140
Low-Power Audio CODEC with
-20
-40
-60
-80
-20
-40
-60
-80
20
18
16
14
12
10
20
20
8
6
4
2
0
0
0
= 32Ω, R
ASYNCHRONOUS SLAVE MODE (-60dBFS)
1.0
ASYNCHRONOUS MASTER MODE (0dBFS)
= 0dB, MCLK = 12.288MHz, DRATE = 10, T
0
0
STEREO DAC PLAYBACK MODE (48kHz)
SUPPLY CURRENT = I
FFT, LINE IN TO ADC (48kHz)
FFT, LINE IN TO ADC (48kHz)
1.5
LINE
vs. SUPPLY VOLTAGE
5k
5k
SUPPLY CURRENT
SUPPLY VOLTAGE (V)
2.0
FREQUENCY (Hz)
FREQUENCY (Hz)
= 10kΩ, C1 = 4.7µF, C2 = 4.7µF, C
10k
10k
VDD
2.5
MCLK = 11.2896MHz
LRCLK = 48kHz
PCLK/2
MCLK = 11.2896MHz
LRCLK = 48kHz
PCLK/2
+ I
DVDDS2
3.0
15k
15k
3.5
20k
20k
4.0
-110
-130
-150
-100
-120
-140
-10
-30
-50
-70
-90
-20
-40
-60
-80
10
20
-1
-2
-3
-4
-5
-6
-7
3
2
1
0
0
DAC DIGITAL FILTER FREQUENCY RESPONSE
ASYNCHRONOUS MASTER MODE (-60dBFS)
A
WIDEBAND FFT, DAC TO HP AMP, 48kHz
10
0
0
SYNCHRONOUS MASTER MODE, 0dBFS
= +25°C, unless otherwise noted.)
REF
FFT, LINE IN TO ADC (48kHz)
100
= C
5k
5k
MBIAS
1k
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
10k
10k
10k
= C
MCLK = 11.2896MHz
LRCLK = 48kHz
PCLK/2
15k
PREG
100k
15k
C1 = 4.7μF
= C
20k
1M
NREG
10M
20k
25k
13