參數(shù)資料
型號(hào): ADS1259BIPW
廠商: Texas Instruments
文件頁(yè)數(shù): 45/48頁(yè)
文件大小: 0K
描述: IC ADC 24BIT 14KSPS LN 20TSSOP
產(chǎn)品培訓(xùn)模塊: Industrial Automation Overview
標(biāo)準(zhǔn)包裝: 70
位數(shù): 24
采樣率(每秒): 14k
數(shù)據(jù)接口: 串行,SPI?
轉(zhuǎn)換器數(shù)目: 1
電壓電源: 模擬和數(shù)字,雙 ±
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 20-TSSOP(0.173",4.40mm 寬)
供應(yīng)商設(shè)備封裝: 20-TSSOP
包裝: 管件
輸入數(shù)目和類型: 2 個(gè)單端,單極;2 個(gè)單端,雙極;1 個(gè)差分,單極;1 個(gè)差分,雙極
其它名稱: 296-27183-5
SCLK
CS
DIN
DOUT
t
SCLK
t
CSSC
t
DIHD
t
CSH
t
CSDOD
t
DIST
t
SPWH
t
SPWL
t
CSDOZ
t
DOHD
t
DOPD
B7
B6
B5
B4
B3
B2
B1
B0
B7
B6
B5
B4
B3
B2
B1
B0
SBAS424D
– JUNE 2009 – REVISED AUGUST 2011
SPI TIMING CHARACTERISTICS
Figure 1. Serial Interface Timing
TIMING REQUIREMENTS: SERIAL INTERFACE TIMING
At TA = –40°C to +105°C and DVDD = 2.7V to 5.25V, unless otherwise noted.
SYMBOL
DESCRIPTION
MIN
MAX
UNIT
tCSSC
CS low to first SCLK: setup time(1)
50
ns
tSCLK
SCLK period
1.8
tCLK
(2)
tSPWH
SCLK pulse width: high
90
ns
90
ns
tSPWL
SCLK pulse width: low(3)
216
tCLK
tDIST
Valid DIN to SCLK falling edge: setup time
35
ns
tDIHD
Valid DIN to SCLK falling edge: hold time
20
ns
tDOPD
SCLK rising edge to valid new DOUT: propagation delay(4)
60
ns
tDOHD
SCLK rising edge to DOUT invalid: hold time
0
ns
tCSDOD
CS low to DOUT driven: propagation delay(4)
0
40
ns
tCSDOZ
CS high to DOUT Hi-Z: propagation delay
20
ns
tCSH
CS high pulse
20
tCLK
(1)
CS can be tied low.
(2)
tCLK = 1/fCLK.
(3)
Holding SCLK low longer than 216
× tCLK cycles resets the SPI interface (enabled by SPI register bit).
(4)
DOUT load = 20pF || 100k
to DGND.
6
Copyright
2009–2011, Texas Instruments Incorporated
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