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参数资料
| 型号： | EVAL-AD1974AZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 6/24页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR AD1974 |
| 标准包装： | 1 |
| ADC 的数量： | 4 |
| 位数： | 24 |
| 采样率（每秒）： | 192k |
| 数据接口： | 串行 |
| 输入范围： | 1.9 Vrms |
| 工作温度： | -40°C ~ 125°C |
| 已用 IC / 零件： | AD1974 |
| 已供物品： | 板 |
AD1974
Data Sheet
Rev. D | Page 14 of 24
LEFT
RIGHT
MSB
ADCL1
ADCR1
ADCL2
ADCR2
AUXL1
AUXR1
AUXL2
AUXR2
UNUSED UNUSED UNUSED UNUSED
FOUR-ON-CHIP
ADC CHANNELS
AUXILIARY ADC CHANNELS
UNUSED SLOTS
32 BITS
06
61
4-
0
52
AUXLRCLK
(AUX PORT)
AUXBCLK
(AUX PORT)
AUXDATA1
(AUX1_IN)
AUXDATA2
(AUX2_IN)
ALRCLK
ABCLK
ASDATA1
(TDM_OUT)
Figure 8. 16-Channel AUX ADC Mode
DAISY-CHAIN MODE
The AD1974 also allows a daisy-chain configuration to
expand the system to 8 ADCs and 16 ADCs (see Figure 9 and
Figure 10). There are two configurations for the ADC port to
work in daisy-chain mode. The first one is with an ABCLK at
ABCLK mode, the ADC channels occupy the first eight slots,
the second eight slots are empty. The TDM_IN of the first
AD1974 must be grounded in all modes of operation. The
second AD1974 is the device attached to the DSP TDM port.
The I/O pins of the serial ports are defined according to the
serial mode selected. See Table 13 for a detailed description
of the function of each pin. See Figure 14 for a typical AD1974
configuration with two external stereo ADCs.
Figure 11 through Figure 13 show the serial mode formats.
For maximum flexibility, the polarity of LRCLK and BCLK
are programmable. All of the clocks are shown with their
normal polarity. The default mode is I2S.
ALRCLK
ABCLK
ASDATA2 (TDM_IN
OF THE SECOND AD1974
IN THE CHAIN)
ADCL1
ADCR1
ADCL2
ADCR2
FOUR ADC CHANNELS OF THE FIRST IC IN THE CHAIN
FOUR ADC CHANNELS OF THE SECOND IC IN THE CHAIN
ASDATA1 (TDM_OUT
OF THE SECOND AD1974
IN THE CHAIN)
ADCL1
ADCR1
ADCL2
ADCR2
ADCL1
ADCR1
ADCL2
ADCR2
32 BITS
MSB
DSP
SECOND
AD1974
FIRST
AD1974
06
61
4-
05
6
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相关代理商/技术参数 |
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| EVAL-AD1974EB | 制造商:AD 制造商全称:Analog Devices 功能描述:4 ADC with PLL, 192 kHz, 24-Bit Codec |
| EVAL-AD1974EBZ | 制造商:Analog Devices 功能描述:EVAL KIT FOR 4 ADC W/ PLL, 192 KHZ, 24BIT CODEC EVAL-AD1974E - Boxed Product (Development Kits) |
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