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參數(shù)資料
| 型號： | PCM3500DATASHEET |
| 英文描述： | PCM3500 Data Sheet - Low Voltage. Low Power. 16-Bit. Mono SoundPlus VOICE |
| 中文描述： | PCM3500數(shù)據(jù)表-低電壓。低功耗。 16位。單SoundPlus語音 |
| 文件頁數(shù)： | 20/26頁 |
| 文件大?。?/td> | 199K |
| 代理商： | PCM3500DATASHEET |
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20
PCM3500
APPLICATIONS INFORMATION
BASIC CIRCUIT CONNECTIONS
The basic connection diagram for the PCM3500 is shown in
Figure 16. Included are the required power supply bypass and
reference decoupling capacitors. The DAC output, V
OUT
, and
the ADC input, V
IN
, should be AC-coupled to external cir-
cuitry.
Reference Pin Connections
The V
COM
voltage is used internally to bias the input and
output amplifier stages of the PCM3500. It is brought out
FIGURE 16. Basic Connection Diagram.
unbuffered on pin 1 for decoupling. A 1
μ
F to 10
μ
F alumi-
num electrolytic or tantalum capacitor is recommended for
decoupling purposes. This capacitor should be located as
close as possible to pin 1.
The V
COM
voltage is typically equal to V
CC
/2, and may be
used to bias external input and output circuitry. However,
since the V
COM
pin is not a buffered output, it must drive a
high impedance load to avoid excessive loading. Buffering
the V
COM
pin with an external op amp configured as a
voltage follower is recommended when driving multiple bias
nodes. Figure 17 shows examples of using V
COM
with
external circuitry.
FIGURE 17. Using V
COM
to Bias External Circuitry.
V
COM
V
REF
1
V
REF
2
V
IN
AGND
M/S
TSC
BCK
FS
DIN
DOUT
FSO
V
CC
AGND
V
OUT
AGND
PDWN
LOOP
HPFD
XTI
XTO
SCKIO
DGND
V
DD
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
PCM3500
+
+
+
+
C
3
C
4
C
5
C
6
Serial
Interface
+
+
C
1
+3.3V
External Reset
Power-Down Control
External Clock System
Analog Line Interface Circuit
Telecom Line
+
C
2
C
7
C
1
, C
2
: Power supply bypass capacitors. Parallel combination of a 1
μ
F to 10
μ
F aluminum electrolytic capacitor and 0.1
μ
F ceramic capacitor.
C
3
, C
4
, C
: V
and V
bypass capacitors. Use a 1
μ
F to 10
μ
F aluminum electrolytic capacitor.
C
6
, C
7
: Input/output AC-coupling capacitors. Use a 0.1
μ
F to 10
μ
F aluminum electrolytic capacitor.
+
V
OUT
Non-Polarized
1
μ
F
PCM3500
4.7
μ
F
V
COM
V
CC
PCM3500
OPA340
OPA343
+
4.7
μ
F
Use voltage follower
to buffer V
COM
To Bias
Nodes
V
COM
(a) Biasing an External Active Filter Stage
(b) Using a Buffer to Provide Bias for Multiple or
Low Input Impedance Nodes
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCM3500E | 功能描述:接口—CODEC Lo-Vlt Lo-Pwr Mono Voice/Modem Codec RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| PCM3500E/2K | 功能描述:接口—CODEC Lo-Vlt Lo-Pwr Mono Voice/Modem Codec RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| PCM3500E/2KG4 | 功能描述:接口—CODEC Lo-Vlt Lo-Pwr Mono Voice/Modem Codec RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| PCM3500EG4 | 功能描述:接口—CODEC Lo-Vlt Lo-Pwr Mono Voice/Modem Codec RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| PCM3501 | 制造商:BB 制造商全稱:BB 功能描述:Low Voltage, Low Power, 16-Bit, Mono VOICE/MODEM CODEC |
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