參數(shù)資料
型號： PCM4222PFBR
英文描述： High-Performance, Two-Channel, 24-Bit, 216kHz Sampling Multi-Bit Delta-Sigma Analog-to-Digital Converter
中文描述： 高性能，雙通道，24位，216kHz的采樣多位Δ-Σ模擬到數(shù)字轉(zhuǎn)換器
文件頁數(shù)： 3/38頁
文件大?。?/td> 604K
代理商： PCM4222PFBR
www.ti.com
ELECTRICAL CHARACTERISTICS: DIGITAL and DYNAMIC PERFORMANCE
All specifications are at T
A
= +25
°
C, VCC1 = VCC2 = +4.0V and VDD = +3.3V unless otherwise noted.
PCM4222
SBAS399A–OCTOBER 2006–REVISED MARCH 2007
PCM4222
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
DIGITAL I/O CHARACTERISTICS
(Applies to all digital I/O pins)
High-level input voltage, V
IH
Low-level input voltage, V
IL
High-level input current, I
IH
Low-level input current, I
IL
High-level output voltage, V
OH
Low-level output voltage, V
OL
Input capacitance, C
IN
PCM OUTPUT SAMPLING RATE, f
S
0.7
×
VDD
0
VDD
V
0.3
×
VDD
10
V
1
μ
A
μ
A
V
1
10
I
O
= –2mA
I
O
= +2mA
0.8
×
VDD
0
VDD
0.2
×
VDD
V
3
pF
Normal mode
8
54
kHz
Double Speed mode
54
108
kHz
Quad Speed mode
108
216
kHz
DSD OUTPUT RATE, f
DSD
64x output mode
0.512
3.456
MHz
128x output mode
1.024
6.912
MHz
MULTI-BIT MODULATOR OUTPUT RATE, f
MOD
1.024
6.912
MHz
MASTER CLOCK INPUT
Normal mode, MCKI = 256f
S
Double Speed mode, MCKI = 128f
S
Quad Speed mode, MCKI = 64f
S
DSD 64x output mode, MCKI = 4
×
f
DSD
DSD 128x output mode, MCKI = 2
×
f
DSD
Multi-bit modulator output, MCKI = 2
×
f
MOD
DYNAMIC PERFORMANCE
(1)
2.048
13.824
MHz
6.912
13.824
MHz
6.912
13.824
MHz
2.048
13.824
MHz
2.048
13.824
MHz
2.048
13.824
MHz
PCM output, Normal mode, f
S
= 48kHz
Total harmonic distortion + noise (THD+N)
BW = 22Hz to 20kHz
f = 997Hz, –1dB input
–108
–101
dB
f = 997Hz, –20dB input
–100
dB
f = 997Hz, –60dB input
–61
dB
Dynamic range, no weighting
f = 997Hz, –60dB input
121
dB
Dynamic range, A-weighted
f = 997Hz, –60dB input
118
123
dB
Channel separation/interchannel isolation
f = 10kHz, –1dB input
115
135
dB
PCM output, Double Speed mode, f
S
= 96kHz
Total harmonic distortion + noise (THD+N)
BW = 22Hz to 40kHz
f = 997Hz, –1dB input
–108
dB
f = 997Hz, –20dB input
–98
dB
f = 997Hz, –60dB input
–58
dB
Dynamic range, no weighting
f = 997Hz, –60dB input
118
dB
Dynamic range, A-weighted
f = 997Hz, –60dB input
123
dB
Channel separation/interchannel isolation
f = 10kHz, –1dB input
135
dB
(1)
Typical PCM output performance is measured and characterized with an Audio Precision SYS-2722 192kHz test system and a
PCM4222EVM evaluation module using the bandwidth and weighting settings as noted in the
Conditions
column. Typical DSD and
Multi-Bit output performance is characterized using an Audio Precision SYS-2722 analog generator, a PCM4222EVM evaluation
module, and a separate data acquisition system for collection and signal processing. The bandwidth and input settings used for these
measurements are noted in the
Conditions
column. Master mode operation is utilized for all modes, with the master clock input
frequency (MCKI) set to 12.288MHz for PCM and MBM output modes, and 11.2896MHz for DSD output mode.
3
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