VDD = 2.8 V to 3.6 V, V
參數(shù)資料
型號(hào): AD7298-1BCPZ-RL
廠商: Analog Devices Inc
文件頁(yè)數(shù): 22/25頁(yè)
文件大?。?/td> 0K
描述: IC ADC 10BIT SPI/SRL 8CH 20LFCSP
標(biāo)準(zhǔn)包裝: 1
位數(shù): 10
采樣率(每秒): 1M
數(shù)據(jù)接口: DSP,串行,SPI?
轉(zhuǎn)換器數(shù)目: 1
功率耗散(最大): 23mW
電壓電源: 單電源
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 20-WFQFN 裸露焊盤,CSP
供應(yīng)商設(shè)備封裝: 20-LFCSP-WQ(4x4)
包裝: 標(biāo)準(zhǔn)包裝
輸入數(shù)目和類型: 8 個(gè)單端,單極
其它名稱: AD7298-1BCPZ-RLDKR
AD7298-1
Rev. A | Page 5 of 24
TIMING SPECIFICATIONS
VDD = 2.8 V to 3.6 V, VDRIVE = 1.65 V to 3.6 V, VREF = 2.5 V internal, TA = 40°C to +125°C, unless otherwise noted. Sample tested during
initial release to ensure compliance. All input signals are specified with tr = tf = 5 ns (10% to 90% of VDRIVE) and timed from a voltage level
of 1.6 V.
Table 2.
Parameter
Limit at T
MIN, TMAX
Unit
Test Conditions/Comments
t
CONVERT
t
2 + (16 × tSCLK)
s max
Conversion time
820
ns typ
Each ADC channel V
IN0 to VIN7, fSCLK = 20 MHz
f
50
kHz min
Frequency of external serial clock
20
MHz max
Frequency of external serial clock
t
QUIET
6
ns min
Minimum quiet time required between the end of the serial read and the start of
the next voltage conversion in repeat and nonrepeat mode.
t
2
10
ns min
CS to SCLK setup time
15
ns max
Delay from CS (falling edge) until DOUT three-state disabled
4
Data access time after SCLK falling edge
35
ns max
V
DRIVE = 1.65 V to 3 V
28
ns max
V
DRIVE = 3 V to 3.6 V
t
5
0.4 × t
SCLK
ns min
SCLK low pulse width
0.4 × t
SCLK
ns min
SCLK high pulse width
14
ns min
SCLK to DOUT valid hold time
16/34
ns min/ns max
SCLK falling edge to DOUT high impedance
t
9
5
ns min
DIN setup time prior to SCLK falling edge
t
4
ns min
DIN hold time after SCLK falling edge
t
30
ns max
Delay from CS rising edge to DOUT high impedance
t
POWER-UP
6
ms max
Internal reference power-up time from full power-down
1 Measured with a load capacitance on DOUT of 15 pF.
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