参数资料
型号: AD7608BSTZ-RL
厂商: Analog Devices Inc
文件页数: 29/32页
文件大小: 0K
描述: IC DAS W/ADC 18BIT 8CH 64LQFP
标准包装: 1,500
类型: 数据采集系统(DAS),ADC
分辨率(位): 18 b
采样率(每秒): 200k
数据接口: DSP,MICROWIRE?,并联,QSPI?,串行,SPI?
电压电源: 模拟和数字
电源电压: 2.3 V ~ 5.25 V,4.75 V ~ 5.25 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 64-LQFP
供应商设备封装: 64-LQFP(10x10)
包装: 带卷 (TR)
AD7608
Data Sheet
Rev. A | Page 6 of 32
TIMING SPECIFICATIONS
AVCC = 4.75 V to 5.25 V, VDRIVE = 2.3 V to 5.25 V, VREF = 2.5 V external reference/internal reference, TA = TMIN to TMAX, unless otherwise noted.1
Table 3.
Limit at TMIN, TMAX
Parameter
Min
Typ
Max
Unit
Description
PARALLEL/SERIAL/BYTE MODE
tCYCLE
1/throughput rate
5
s
Parallel mode, reading during or after conversion; or serial mode: VDRIVE =
3.3 V to 5.25 V, reading during a conversion using DOUTA and DOUTB lines
5
s
Serial mode reading during conversion; VDRIVE = 2.7 V
10.5
s
Serial mode reading after a conversion; VDRIVE = 2.3 V, DOUTA and DOUTB lines
tCONV
Conversion time
3.45
4
4.15
s
Oversampling off
7.87
9.1
s
Oversampling by 2
16.05
18.8
s
Oversampling by 4
33
39
s
Oversampling by 8
66
78
s
Oversampling by 16
133
158
s
Oversampling by 32
257
315
s
Oversampling by 64
tWAKE-UP STANDBY
100
s
EE
AA
rising edge to CONVST x rising edge; power-up time from
standby mode
STBY
tWAKE-UP SHUTDOWN
Internal Reference
30
ms
AA
STBYEE
AA
rising edge to CONVST x rising edge; power-up time from
shutdown mode
External Reference
13
ms
AA
STBYEE
AA
rising edge to CONVST x rising edge; power-up time from
shutdown mode
tRESET
50
ns
RESET high pulse width
tOS_SETUP
20
ns
BUSY to OS x pin setup time
tOS_HOLD
20
ns
BUSY to OS x pin hold time
t1
40
ns
CONVST x high to BUSY high
t2
25
ns
Minimum CONVST x low pulse
t3
25
ns
Minimum CONVST x high pulse
t4
0
ns
BUSY falling edge to
AA
CSEE
AA
falling edge setup time
t5
0.5
ms
Maximum delay allowed between CONVST A, CONVST B rising edges
t6
25
ns
Maximum time between last
AA
CSEE
AA
rising edge and BUSY falling edge
t7
25
ns
Minimum delay between RESET low to CONVST x high
PARALLEL/BYTE READ
OPERATION
t8
0
ns
AA
CSEE
AA
to
AA
RDEE
AA
setup time
t9
0
ns
AA
CSEE
AA
to
AA
RDEE
AA
hold time
t10
AA
RDEE
AA
low pulse width
16
ns
VDRIVE above 4.75 V
21
ns
VDRIVE above 3.3 V
25
ns
VDRIVE above 2.7 V
32
ns
VDRIVE above 2.3 V
t11
15
ns
AA
RDEE
AA
high pulse width
t12
22
ns
AA
CSEE
AA
high pulse width (see Figure 5);
AA
CSEE
AA
and
AA
RDEE
AA
linked
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