参数资料
| 型号： | PCM1602APTG4 |
| 厂商： | Texas Instruments |
| 文件页数： | 6/46页 |
| 文件大小： | 0K |
| 描述： | IC DAC 24BIT 6CH 192KHZ 48-LQFP |
| 产品培训模块： | Data Converter Basics |
| 标准包装： | 250 |
| 位数： | 24 |
| 数据接口： | 串行 |
| 转换器数目： | 6 |
| 电压电源： | 模拟和数字 |
| 功率耗散（最大）： | 240mW |
| 工作温度： | -25°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 48-LQFP |
| 供应商设备封装： | 48-LQFP（7x7） |
| 包装： | 带卷 (TR) |
| 输出数目和类型： | 6 电压，单极 |
| 采样率（每秒）： | 192k |
| 配用： | DEM-DAI1602-ND - EVAL FIXTURE FOR PCM1602 |
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Reset
Reset Removal
VDD
2.4 V
2 V
1.6 V
Internal Reset
System Clock
T0014-08
0 V
Don’t Care
1024 System Clocks
Reset Removal
1024 System Clocks
RST
Internal Reset
System Clock
Reset
T0015-06
SLES146A – AUGUST 2005 – REVISED OCTOBER 2010
www.ti.com
POWER-ON AND EXTERNAL RESET FUNCTIONS
The PCM1602A includes a power-on-reset function, as shown in Figure 20. With the system clock active, and
VDD > 2 V (typical, 1.6 V to 2.4 V), the power-on-reset function is enabled. The initialization sequence requires
1024 system clocks from the time VDD > 2 V. After the initialization period, the PCM1602A is set to its reset
default state, as described in the Mode Control Registers section of this data sheet.
The PCM1602A also includes an external reset capability using the RST input (pin 37). This allows an external
controller or master reset circuit to force the PCM1602A to initialize to its reset default state. For normal
operation, RST should be set to a logic-1.
The external reset operation and timing is shown in Figure 21. The RST pin is set to logic-0 for a minimum of
20 ns. After the initialization sequence is completed, the PCM1602A is set to its reset default state, as described
in the Mode Control Registers section of this data sheet.
During the reset period (1024 system clocks), the analog outputs are forced to the bipolar zero level (or VCC/2).
After the reset period, the internal registers are initialized in the next 1/fS period and, if SCKI, BCK, and LRCK
are provided continuously, the PCM1602A provides proper analog output with the group delay time given in the
Electrical Characteristics section of this data sheet.
The external reset is especially useful in applications where there is a delay between PCM1602A power-up and
system-clock activation. In this case, the RST pin should be held at a logic-0 level until the system clock has
been activated.
Figure 20. Power-On-Reset Timing
Figure 21. External Reset Timing
14
Copyright 2005–2010, Texas Instruments Incorporated
Product Folder Link(s): PCM1602A
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| PCM1602APTR | 功能描述:音频数/模转换器 IC 24-bit 192kHz 6ch Delta-Sig Audio DAC RoHS:否 制造商:Texas Instruments 转换器数量: 分辨率:16 bit 接口类型:I2S, UBS 转换速率: 信噪比:98 dB 工作电源电压:5 V DAC 输出端数量:2 工作温度范围:- 25 C to + 85 C 电源电流:23 mA 安装风格:SMD/SMT 封装 / 箱体:TQFP-32 封装:Reel |
| PCM1602APTRG4 | 功能描述:音频数/模转换器 IC 24-bit 192kHz 6ch Delta-Sig Audio DAC RoHS:否 制造商:Texas Instruments 转换器数量: 分辨率:16 bit 接口类型:I2S, UBS 转换速率: 信噪比:98 dB 工作电源电压:5 V DAC 输出端数量:2 工作温度范围:- 25 C to + 85 C 电源电流:23 mA 安装风格:SMD/SMT 封装 / 箱体:TQFP-32 封装:Reel |
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