參數資料
型號: ADS62P45IRGCR
廠商: Texas Instruments
文件頁數: 9/78頁
文件大小: 0K
描述: IC ADC 14BIT SER/PAR 125M 64VQFN
產品培訓模塊: Data Converter Basics
標準包裝: 2,000
位數: 14
采樣率(每秒): 125M
數據接口: 串行,并聯
轉換器數目: 2
電壓電源: 模擬和數字
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 64-VFQFN 裸露焊盤
供應商設備封裝: 64-VQFN 裸露焊盤(9x9)
包裝: 帶卷 (TR)
輸入數目和類型: 2 個差分,單極
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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