参数资料
型号: EVAL-AD7262EDZ
厂商: Analog Devices Inc
文件页数: 31/33页
文件大小: 0K
描述: BOARD EVAL CONTROL AD7262
标准包装: 1
ADC 的数量: 2
位数: 12
采样率(每秒): 1M
数据接口: 串行
输入范围: 5 Vpp
在以下条件下的电源(标准): 120mW @ 1MSPS
工作温度: -40°C ~ 105°C
已用 IC / 零件: AD7262
已供物品: 板,CD
AD7262
Rev. 0 | Page 6 of 32
TIMING SPECIFICATIONS
AVCC = 4.75 V to 5.25 V, CA_CBVCC = CC_CDVCC = 2.7 V to 5.25 V, VREF = 2.5 V internal/external; TA = TMIN to TMAX, unless otherwise noted.1
Table 2.
Limit at TMIN, TMAX
Parameter
2.7 V ≤ VDRIVE ≤ 3.6 V
4.75 V ≤ VDRIVE ≤ 5.25 V
Unit
Description
fSCLK
200
kHz min
40
MHz max
32
MHz typ
20
MHz max
AD7262-5
tCONVERT
19 × tSCLK
ns max
tSCLK = 1/fSCLK
475
ns max
AD7262
950
ns max
AD7262-5
tQUIET
13
ns min
Minimum time between end of serial read/bus relinquish
and next falling edge of CS
t2
10
ns min
CS to SCLK setup time
15
ns max
Delay from 19th SCLK falling edge until DOUTA and DOUTB are
three-state disabled
t4
29
23
ns max
Data access time after SCLK falling edge
t5
15
13
ns min
SCLK to data valid hold time
t6
0.4 × tSCLK
ns min
SCLK high pulse width
t7
0.4 × tSCLK
ns min
SCLK low pulse width
t8
13
ns min
CS rising edge to falling edge pulse width
t9
13
ns max
CS rising edge to DOUTA, DOUTB, high impedance/bus
relinquish
t10
5
ns min
SCLK falling edge to DOUTA, DOUTB, high impedance
35
ns max
SCLK falling edge to DOUTA, DOUTB, high impedance
t11
2
μs min
Minimum CAL pin high time
t12
2
μs min
Minimum time between the CAL pin high and the CS
falling edge
t13
3
ns min
DIN setup time prior to SCLK falling edge
t14
3
ns min
DIN hold time after SCLK falling edge
tPOWER-UP
240
μs max
Internal reference, with a 1 μF decoupling capacitor
15
μs max
With an external reference, 10 μs typical
SCLK
15
19
DOUTA
THREE-STATE
t4
23
4
20
t5
THREE-
STATE
t7
t3
18
DB9A
DB10A
DB11A
21
29
30
31
1 Sample tested during initial release to ensure compliance. All input signals are specified with tR = tF = 5 ns (10% to 90% of AVCC) and timed from a voltage level of 1.6 V.
All timing specifications given are with a 25 pF load capacitance. With a load capacitance greater than this value, a digital buffer or latch must be used. See the
Terminology section.
2 See the Serial Interface section.
3 The time required for the output to cross 0.4 V or 2.4 V.
TIMING DIAGRAM
CS
DB1A
DB0A
t2
t9
tQUIET
t8
t6
DOUTB
THREE-STATE
THREE-
STATE
DB9B
DB10B
DB11B
DB1B
DB0B
076
06
-00
2
Figure 2. Serial Interface Timing Diagram
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