参数资料
型号: AD7265BSUZ
厂商: Analog Devices Inc
文件页数: 26/29页
文件大小: 0K
描述: IC ADC 12BIT 3CHAN 1MSPS 32TQFP
设计资源: AD7265 in Differential and Single-Ended Configurations Using AD8022 (CN0048)
标准包装: 1
位数: 12
采样率(每秒): 1M
数据接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
转换器数目: 2
功率耗散(最大): 21mW
电压电源: 模拟和数字
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 32-TQFP
供应商设备封装: 32-TQFP(7x7)
包装: 托盘
输入数目和类型: 12 个单端,单极;6 个差分,单极;6 个伪差分,单极
AD7265
Rev. A | Page 5 of 28
TIMING SPECIFICATIONS
AVDD = DVDD = 2.7 V to 5.25 V, VDRIVE = 2.7 V to 5.25 V, internal/external reference = 2.5 V, TA = TMAX to TMIN, unless otherwise noted1.
Table 2.
Parameter
Limit at TMIN, TMAX
Unit
Description
fSCLK2
1
MHz min
TA = 40°C to +85°C
4
MHz min
TA > 85°C to 125°C
16
MHz max
tCONVERT
14 × tSCLK
ns max
tSCLK = 1/fSCLK
875
ns max
fSCLK = 16 MHz
tQUIET
30
ns min
Minimum time between end of serial read and next falling edge of CS
t2
15/20
ns min
VDD = 5 V/3 V, CS to SCLK setup time, TA = 40°C to +85°C
20/30
ns min
VDD = 5 V/3 V, CS to SCLK setup time, TA > 85°C to 125°C
t3
15
ns max
Delay from CS until DOUTA and DOUTB are three-state disabled
t43
36
ns max
Data access time after SCLK falling edge, VDD = 3 V
27
ns max
Data access time after SCLK falling edge, VDD = 5 V
t5
0.45 tSCLK
ns min
SCLK low pulse width
t6
0.45 tSCLK
ns min
SCLK high pulse width
t7
10
ns min
SCLK to data valid hold time, VDD = 3 V
5
ns min
SCLK to data valid hold time, VDD = 5 V
t8
15
ns max
CS rising edge to DOUTA, DOUTB, high impedance
t9
30
ns min
CS rising edge to falling edge pulse width
t10
5
ns min
SCLK falling edge to DOUTA, DOUTB, high impedance
50
ns max
SCLK falling edge to DOUTA, DOUTB, high impedance
1 Sample tested during initial release to ensure compliance. All input signals are specified with tr = tf = 5 ns (10% to 90% of VDD) 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 Serial
2 Minimum SCLK for specified performance; with slower SCLK frequencies, performance specifications apply typically.
3 The time required for the output to cross 0.4 V or 2.4 V.
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