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AD5687BRUZ Datasheet(PDF) 5 Page - Analog Devices

Part # AD5687BRUZ
Description  Dual, 16-/12-Bit nanoDAC with SPI Interface
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD5687BRUZ Datasheet(HTML) 5 Page - Analog Devices

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Data Sheet
AD5689/AD5687
Rev. 0 | Page 5 of 24
TIMING CHARACTERISTICS
All input signals are specified with tR = tF = 1 ns/V (10% to 90% of VDD) and timed from a voltage level of (VIL + VIH)/2. See Figure 2.
VDD = 2.7 V to 5.5 V, 1.8 V ≤ VLOGIC ≤ 5.5 V; VREF = 2.5 V. All specifications TMIN to TMAX, unless otherwise noted.
Table 4.
1.8 V ≤ VLOGIC <
2.7 V
2.7 V ≤ VLOGIC
5.5 V
Parameter1
Min
Max
Min
Max
Unit
Description
t1
33
20
ns
SCLK cycle time
t2
16
10
ns
SCLK high time
t3
16
10
ns
SCLK low time
t4
15
10
ns
SYNC to SCLK falling edge setup time
t5
5
5
ns
Data setup time
t6
5
5
ns
Data hold time
t7
15
10
ns
SCLK falling edge to SYNC rising edge
t8
20
20
ns
Minimum SYNC high time (update single channel or both channels)
t9
16
10
ns
SYNC falling edge to SCLK fall ignore
t10
25
15
ns
LDAC pulse width low
t11
30
20
ns
SCLK falling edge to LDAC rising edge
t12
20
20
ns
SCLK falling edge to LDAC falling edge
t13
30
30
ns
RESET minimum pulse width low
t14
30
30
ns
RESET pulse activation time
Power-Up Time
4.5
4.5
µs
Time that is required to exit power-down mode and enter
normal mode of operation; 24th clock edge to 90% of DAC
midscale value with output unloaded
1
Maximum SCLK frequency is 50 MHz at VDD = 2.7 V to 5.5 V, 2.7 V ≤ VLOGIC ≤ VDD. Guaranteed by design and characterization; not production tested.
Figure 2. Serial Write Operation
t4
t3
SCLK
SYNC
SDIN
t1
t2
t5
t6
t7
t8
DB23
t9
t10
t11
LDAC1
LDAC2
t12
1ASYNCHRONOUS LDAC UPDATE MODE.
2SYNCHRONOUS LDAC UPDATE MODE.
RESET
t13
t14
VOUTX
DB0


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