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AD4007BRMZ-RL7 数据表(PDF) 7 Page - Analog Devices

部件名 AD4007BRMZ-RL7
功能描述  Precision, Differential SAR ADCs
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD4007BRMZ-RL7 数据表(HTML) 7 Page - Analog Devices

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Data Sheet
AD4003/AD4007/AD4011
Rev. B | Page 7 of 38
TIMING SPECIFICATIONS
VDD = 1.71 V to 1.89 V; VIO = 1.71 V to 5.5 V; VREF = 5 V; all specifications TMIN to TMAX, high-Z mode disabled, span compression
disabled, turbo mode enabled, and sampling frequency fS = 2 MSPS for the AD4003, fS = 1 MSPS for the AD4007, and fS = 500 kSPS for
the AD4011, unless otherwise noted. See Figure 2 for the timing voltage levels.
Table 2. Digital Interface Timing
Parameter
Symbol
Min
Typ
Max
Unit
CONVERSION TIME—CNV RISING EDGE TO DATA AVAILABLE
tCONV
270
290
320
ns
ACQUISITION PHASE1
tACQ
AD4003
290
ns
AD4007
790
ns
AD4011
1790
ns
TIME BETWEEN CONVERSIONS
tCYC
AD4003
500
ns
AD4007
1000
ns
AD4011
2000
ns
CNV PULSE WIDTH (CS MODE)2
tCNVH
10
ns
SCK PERIOD (CS MODE)3
tSCK
VIO > 2.7 V
9.8
ns
VIO > 1.7 V
12.3
ns
SCK PERIOD (DAISY-CHAIN MODE)4
tSCK
VIO > 2.7 V
20
ns
VIO > 1.7 V
25
ns
SCK LOW TIME
tSCKL
3
ns
SCK HIGH TIME
tSCKH
3
ns
SCK FALLING EDGE TO DATA REMAINS VALID DELAY
tHSDO
1.5
ns
SCK FALLING EDGE TO DATA VALID DELAY
tDSDO
VIO > 2.7 V
7.5
ns
VIO > 1.7 V
10.5
ns
CNV OR SDI LOW TO SDO D17 MOST SIGNIFICANT BIT (MSB) VALID DELAY (CS MODE)
tEN
VIO > 2.7 V
10
ns
VIO > 1.7 V
13
ns
CNV RISING EDGE TO FIRST SCK RISING EDGE DELAY
tQUIET1
190
ns
LAST SCK FALLING EDGE TO CNV RISING EDGE DELAY5
tQUIET2
60
ns
CNV OR SDI HIGH OR LAST SCK FALLING EDGE TO SDO HIGH IMPEDANCE (CS MODE)
tDIS
20
ns
SDI VALID SETUP TIME FROM CNV RISING EDGE
tSSDICNV
2
ns
SDI VALID HOLD TIME FROM CNV RISING EDGE (CS MODE)
tHSDICNV
2
ns
SCK VALID HOLD TIME FROM CNV RISING EDGE (DAISY-CHAIN MODE)
tHSCKCNV
12
ns
SDI VALID SETUP TIME FROM SCK RISING EDGE (DAISY-CHAIN MODE)
tSSDISCK
2
ns
SDI VALID HOLD TIME FROM SCK RISING EDGE (DAISY-CHAIN MODE)
tHSDISCK
2
ns
1 The acquisition phase is the time available for the input sampling capacitors to acquire a new input with the ADC running at a throughput rate of 2 MSPS for the
AD4003, 1 MSPS for the AD4007, and 500 kSPS for the AD4011.
2 For turbo mode, tCNVH must match the tQUIET1 minimum.
3 A throughput rate of 2 MSPS can only be achieved with turbo mode enabled and a minimum SCK rate of 75 MHz. Refer to Table 4 for the maximum achievable
throughput for different modes of operation.
4 A 50% duty cycle is assumed for SCK.
5 See Figure 22 for SINAD vs. tQUIET2.


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