参数资料
型号: AD7641BSTZRL
厂商: Analog Devices Inc
文件页数: 24/28页
文件大小: 0K
描述: IC ADC 18BIT 2MSPS SAR 48-LQFP
产品培训模块: ADC Applications
ADC Architectures
ADC DC/AC Performance
标准包装: 2,000
位数: 18
采样率(每秒): 2M
数据接口: 串行,并联
转换器数目: 1
功率耗散(最大): 92mW
电压电源: 模拟和数字
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 48-LQFP
供应商设备封装: 48-LQFP(7x7)
包装: 带卷 (TR)
输入数目和类型: 1 个差分,双极
配用: EVAL-AD7641CBZ-ND - BOARD EVALUATION FOR AD7641
AD7641
Rev. 0 | Page 5 of 28
TIMING SPECIFICATIONS
AVDD = DVDD = 2.5 V; OVDD = 2.3 V to 3.6 V; VREF = 2.5 V; all specifications TMIN to TMAX, unless otherwise noted.
Table 3.
Parameter
Symbol
Min
Typ
Max
Unit
CONVERSION AND RESET (Refer to Figure 29 and Figure 30)
Convert Pulse Width
t1
15
701
ns
Time Between Conversions (Warp Mode2/Normal Mode3)
t2
500/667
ns
CNVST Low to BUSY High Delay
t3
23
ns
BUSY High All Modes (Except Master Serial Read After Convert)
t4
385/520
ns
Aperture Delay
t5
1
ns
End of Conversion to BUSY Low Delay
t6
10
ns
Conversion Time (Warp Mode/Normal Mode)
t7
385/520
ns
Acquisition Time (Warp Mode/Normal Mode)
t8
115
ns
RESET Pulse Width
t9
15
ns
RESET Low to BUSY High Delay4
t38
10
ns
BUSY High Time from RESET Low4
t39
600
ns
PARALLEL INTERFACE MODES (Refer to Figure 31 to Figure 34 )
CNVST Low to Data Valid Delay (Warp Mode/Normal Mode)
t10
385/520
ns
Data Valid to BUSY Low Delay
t11
2
ns
Bus Access Request to Data Valid
t12
20
ns
Bus Relinquish Time
t13
2
15
ns
MASTER SERIAL INTERFACE MODES5 (Refer to Figure 35 and Figure 36)
CS Low to SYNC Valid Delay
t14
10
ns
CS Low to Internal SCLK Valid Delay5
t15
10
ns
CS Low to SDOUT Delay
t16
10
ns
CNVST Low to SYNC Delay (Warp Mode/Normal Mode)
t17
14/137
ns
SYNC Asserted to SCLK First Edge Delay
t18
0.5
ns
Internal SCLK Period6
t19
8
14
ns
Internal SCLK High6
t20
2
ns
Internal SCLK Low6
t21
3
ns
SDOUT Valid Setup Time6
t22
1
ns
SDOUT Valid Hold Time6
t23
0
ns
SCLK Last Edge to SYNC Delay6
t24
0
ns
CS High to SYNC HI-Z
t25
10
ns
CS High to Internal SCLK HI-Z
t26
10
ns
CS High to SDOUT HI-Z
t27
10
ns
BUSY High in Master Serial Read After Convert6
t28
ns
CNVST Low to SYNC Asserted Delay (All Modes)
t29
383/500
ns
SYNC Deasserted to BUSY Low Delay
t30
13
ns
SLAVE SERIAL INTERFACE MODES (Refer to Figure 38 and Figure 39)
External SCLK Setup Time
t31
5
ns
External SCLK Active Edge to SDOUT Delay
t32
1
8
ns
SDIN Setup Time
t33
5
ns
SDIN Hold Time
t34
5
ns
External SCLK Period
t35
12.5
ns
External SCLK High
t36
5
ns
External SCLK Low
t37
5
ns
2 All timings for wideband warp mode are the same as warp mode.
3 In warp mode only, the maximum time between conversions is 1 ms; otherwise, there is no required maximum time.
5 In serial interface modes, the SYNC, SCLK, and SDOUT timings are defined with a maximum load CL of 10 pF; otherwise, the load is 60 pF maximum.
6 In serial master read during convert mode. See Table 4 for serial master read after convert mode timing specifications.
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