参数资料
型号: MAX9856ETL+T
厂商: Maxim Integrated Products
文件页数: 43/46页
文件大小: 0K
描述: IC AUDIO CODEC 40TQFN-EP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
类型: 音频编解码器
数据接口: 串行
分辨率(位): 18 b
ADC / DAC 数量: 2 / 2
三角积分调变:
S/N 比,标准 ADC / DAC (db): 77 / 91
动态范围,标准 ADC / DAC (db): 85 / 91
电压 - 电源,模拟: 1.71 V ~ 3.6 V
电压 - 电源,数字: 1.71 V ~ 3.6 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 40-WFQFN 裸露焊盘
供应商设备封装: 40-TQFN-EP(5x5)
包装: 带卷 (TR)
MAX9856
Low-Power Audio CODEC with
DirectDrive Headphone Amplifiers
6
_______________________________________________________________________________________
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Total Harmonic Distortion Plus
Noise
THD+N
VOUT = 1VRMS, f = 1kHz
0.024
%
Signal-to-Noise Ratio
SNR
98
dB
VAVDD = 1.71V to 3.6V
70
108
VRIPPLE = 100mVP-P, f = 217Hz
93
Power-Supply Rejection Ratio
PSRR
VRIPPLE = 100mVP-P, f = 10kHz
60
dB
Capacitive Drive
CL
No sustained oscillations
150
pF
Crosstalk
VOUT = 2VP-P, f = 1kHz, (LOUTL to LOUTR)
or (LOUTR to LOUTL)
98
dB
Channel Gain Matching
AVMATCH
±2
%
VOLUME CONTROL
Headphone Volume Control
Range
-74.0
+5.5
dB
5.5dB to 2dB
0.5
+2.5dB to -2dB
1
-2dB to -46dB
2
Headphone Volume Control Step
Size
-46dB to -74dB
4
dB
Headphone Mute Attenuation
f = 1kHz
92
dB
CHARGE PUMP
Charge-Pump Oscillator
Frequency
fOSC
TA = +25°C
600
665
720
kHz
MICROPHONE AMPLIFIERS
PALEN/PAREN = 01
-0.5
0
+0.5
PALEN/PAREN = 10
19
20
21
Preamplifier Gain
AVPRE
MICL or MICR
PALEN/PAREN = 11
28.5
30.0
31.5
dB
PGAML/R = 0x20
-0.5
0
+0.5
MIC PGA Gain
AVMICPGA
PGAML/R = 0x00
19.5
20.0
19.5
dB
MIC PGA Gain Step Size
1dB
MIC Mute Attenuation
f = 1kHz
92
dB
Common-Mode Rejection Ratio
CMRR
INL±, VIN = 100mVP-P at 217Hz,
AVPRE = +20dB
73
dB
INL±, MICL or MICR, AVPRE = +30dB
4
8
10
INL±, MICL or MICR, AVPRE = +20dB
12
18
28
MIC Input Resistance
RIN_MIC
INL±, MICL or MICR, AVPRE = 0dB
60
100
160
k
Ω
MIC Input Resistance Matching
RMATCH
INL+ to INL- or MICL/MICR to AGND
1
%
MIC Input Bias Voltage
VCML
Measured at INL±, MICR, MICL, and AGND
-0.05
0
+0.05
V
Input Voltage Noise
f = 1kHz, AVPRE = +30dB
15
nV/
√Hz
ELECTRICAL CHARACTERISTICS (continued)
(VAVDD = VCPVDD = VDVDDS2 = VDVDD = 1.8V, RHP = 32Ω, RLINE = 10kΩ, C1 = 4.7F, C2 = 4.7F, CREF = CMBIAS = CPREG =
CNREG = 1F, AVPRE = +20dB, CMICBIAS = 1F, AVMIGPGA = 0dB, fMCLK = 11.2896MHz, DRATE = 00, TA = TMIN to TMAX, unless
otherwise noted. Typical values are at TA = +25°C.) (Note 1)
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