参数资料
型号: ADS62P44IRGCT
厂商: Texas Instruments
文件页数: 9/78页
文件大小: 0K
描述: IC ADC 14BIT DUAL 105MSPS 64VQFN
产品培训模块: Data Converter Basics
标准包装: 1
位数: 14
采样率(每秒): 105M
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: 296-23137-6
T0109-01
Register Address
RegisterData
t
(SCLK)
t
(DSU)
t
(DH)
t
(SLOADS)
D7
A7
D3
A3
D5
A5
D1
A1
D6
A6
D2
A2
D4
A4
D0
A0
SDATA
SCLK
SEN
RESET
t
(SLOADH)
SLAS561C
– JULY 2007 – REVISED FEBRUARY 2012
Figure 6. Serial Interface Timing
Serial Register Readout (only when CMOS interface is used)
The device includes an option where the contents of the internal registers can be read back. This may be useful
as a diagnostic check to verify the serial interface communication between the external controller and the ADC.
1.
First, set register bit
<SERIAL READOUT> = 1. This also disables any further writes into the registers.
2.
Initiate a serial interface cycle specifying the address of the register (A7-A0) whose content has to be read.
3.
The device outputs the contents (D7-D0) of the selected register on the SDOUT pin.
4.
The external controller can latch the contents at the falling edge of SCLK.
5.
To enable register writes, reset register bit
<SERIAL READOUT> = 0.
The serial register readout works only with CMOS interface; with LVDS interface, pin 56 functions as CLKOUTM.
When
<SERIAL READOUT> is disabled, SDOUT pin is forced low or high by the device (and not put in
high-impedance). If serial readout is not used, SDOUT pin must be floated.
Copyright
2007–2012, Texas Instruments Incorporated
17
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