参数资料
型号: ADS62P45IRGCT
厂商: Texas Instruments
文件页数: 57/78页
文件大小: 0K
描述: IC ADC 14BIT DUAL 125MSPS 64VQFN
产品培训模块: Data Converter Basics
标准包装: 1
位数: 14
采样率(每秒): 125M
数据接口: 串行,并联
转换器数目: 2
电压电源: 模拟和数字
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 64-VFQFN 裸露焊盘
供应商设备封装: 64-VQFN 裸露焊盘(9x9)
包装: 标准包装
输入数目和类型: 2 个差分,单极
其它名称: 296-23138-6
T0297-01
DB0
DB1
DB2
DB13
DA0
DA1
DA2
DA13
SampleN+1
SampleN
DA0
DA1
DA2
DA13
DB0
DB1
DB2
DB13
DB0
DB1
DB2
DB13
CLKOUT
SLAS561C
– JULY 2007 – REVISED FEBRUARY 2012
Output Data Format
Two output data formats are supported
– 2s complement and straight binary. They can be selected using the
serial interface register bit
<DATA FORMAT> or controlling the SEN pin in parallel configuration mode.
In the event of an input voltage overdrive, the digital outputs go to the appropriate full scale level. For a positive
overdrive, the output code is 0x7FF in offset binary output format, and 0x3FF in 2s complement output format.
For a negative input overdrive, the output code is 0x000 in offset binary output format and 0x400 in 2s
complement output format.
Multiplexed Output Mode
This mode is available only with CMOS interface. In this mode, the digital outputs of both the channels are
multiplexed and output on a single bus (DB0-DB13 pins), as per the timing diagram shown in Figure 99. The
channel A output pins (DA0-DA10
) are three-stated. Since the output data rate on the DB bus is
effectively doubled, this mode is recommended only for low sampling frequencies (
< 65 MSPS).
This mode can be enabled using register bits
<POWER DOWN MODES> or using the parallel pins CTRL1 -3.
Figure 99. Multiplexed Mode
– Output Timing
Low Latency Mode
The default latency of ADS62P4X is 14 clock cycles. For applications, which cannot tolerate large latency,
ADS62P4X includes a special mode with 10 clock cycles latency. In the low latency condition, the Digital
Processing block is bypassed and its features (offset correction, fine gain, decimation filters) are not available.
60
Copyright
2007–2012, Texas Instruments Incorporated
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