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參數(shù)資料
| 型號(hào)： | PCM1750P |
| 英文描述： | Dual CMOS 18-Bit Monolithic Audio ANALOG-TO-DIGITAL CONVERTER |
| 中文描述： | 雙通道CMOS 18位單片音頻模擬數(shù)字轉(zhuǎn)換器 |
| 文件頁數(shù)： | 6/18頁 |
| 文件大?。?/td> | 240K |
| 代理商： | PCM1750P |
PCM1750
6
25k
25k
150k
5k
5k
12a
3b
3a
2b
1b
1a
2T
1T
3T
12T
off
S
C
V
REF
P16, P27
+V (+5V)
P15, P28
.01μF
P19, P24
500
13.25k
A1
A2
Latch
Comparator
Data Out
AZ
CAZ
(MSB)
S
V
C
5PF
10PF
1
2
3
IN
REF
V
20PF
1
L
S
S
3
C
2
C
1
1
CAZ
2
AZ
2
AZ
CAZ
3
3
CAZ
4
AZ
4
47k
.01μF
+V (+5V)
off
C
R
offb
500
R
12b
R
S
12T
R
R
R
S
3T
C
S
2T
C
S
1T
C
R
R
a
b
R
R
2a
R
100mV
H1
H2
P18, P25
V
Simplified
V Circuit
REFIN
+V (+5V)
917
P18, P25
V
REFIN
R
offa
47k
V
REFOUT
Optional External
Adjustment Circuitry
TDAC
Auto-Zeroed Comparator
CDAC
0 to 120pF
(Code
dependent)
MSB Adj
Off Adj
= 2.75V
600
13.25k
THEORY OF OPERATION
OVERVIEW
The PCM1750 is a dual 18-bit successive approximation
CMOS analog-to-digital converter with serial data outputs
designed especially for digital audio and similar applica-
tions. The single-chip converter is fabricated on a 3
μ
P-well
CMOS process which includes poly-poly capacitors, laser-
trimmable nichrome resistors, and two layers of interconnect
metal. The dual converter employs a switched capacitor
architecture which provides separate, simultaneous S/H
(sample/hold) functions for each input channel. The separate
S/H for each channel results in a desired feature called
co-phase sampling which means that both S/H circuits are
switched at the same time into the HOLD mode to capture
their respective input signals simultaneously. This elimi-
nates phasing errors produced by alternative architecture
ADCs which do not sample the two input channels at the
same time.
Switched binary-weighted poly-poly capacitors are used in
CDAC (capacitive digital-to-analog converter) configura-
tions to form the successive approximation converter sec-
FIGURE 1. PCM1750 Simplified Circuit Diagram.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PCM1750U | Dual CMOS 18-Bit Monolithic Audio ANALOG-TO-DIGITAL CONVERTER |
| PCM1753DBQR | 24-BIT, 192 kHz SAMPLING ENHANCED MULTI-LEVEL, DELTA-SIGMA, AUDIO DIGITAL-TO-ANALOG CONVERTER |
| PCM1755DBQR | 24-BIT, 192 kHz SAMPLING ENHANCED MULTI-LEVEL, DELTA-SIGMA, AUDIO DIGITAL-TO-ANALOG CONVERTER |
| PCM1753 | 24-BIT, 192 kHz SAMPLING ENHANCED MULTI-LEVEL, DELTA-SIGMA, AUDIO DIGITAL-TO-ANALOG CONVERTER |
| PCM1753DBQ | 24-BIT, 192 kHz SAMPLING ENHANCED MULTI-LEVEL, DELTA-SIGMA, AUDIO DIGITAL-TO-ANALOG CONVERTER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCM1750P/PCM1750U | 制造商:BB 制造商全稱:BB 功能描述:PCM1750P. PCM1750U - Dual CMOS 18-Bit Monolithic Audio ANALOG-TO-DIGITAL CONVERTER |
| PCM1750U | 功能描述:音頻模/數(shù)轉(zhuǎn)換器 IC Dual CMOS 18-Bit Mono A/D Converter RoHS:否 制造商:Wolfson Microelectronics 轉(zhuǎn)換速率: 分辨率: ADC 輸入端數(shù)量: 工作電源電壓: 最大工作溫度: 最小工作溫度: 安裝風(fēng)格: 封裝 / 箱體: 封裝: |
| PCM1750U/1K | 功能描述:音頻模/數(shù)轉(zhuǎn)換器 IC Dual CMOS 18-Bit Mono A/D Converter RoHS:否 制造商:Wolfson Microelectronics 轉(zhuǎn)換速率: 分辨率: ADC 輸入端數(shù)量: 工作電源電壓: 最大工作溫度: 最小工作溫度: 安裝風(fēng)格: 封裝 / 箱體: 封裝: |
| PCM1750U/1KG4 | 功能描述:音頻模/數(shù)轉(zhuǎn)換器 IC Dual CMOS 18-Bit Mono A/D Converter RoHS:否 制造商:Wolfson Microelectronics 轉(zhuǎn)換速率: 分辨率: ADC 輸入端數(shù)量: 工作電源電壓: 最大工作溫度: 最小工作溫度: 安裝風(fēng)格: 封裝 / 箱體: 封裝: |
| PCM1750U1K | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Dual CMOS 18-Bit Monolithic Audio NALOG-TO-DIGITAL CONVERTER |
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