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AD5757 Folha de dados(PDF) 6 Page - Analog Devices

Nome de Peças AD5757
Descrição Electrónicos  Quad Channel, 16-Bit, Serial Input, 4-20mA Output DAC, Dynamic Power Control, HART Connectivity
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Fabricante Electrônico  AD [Analog Devices]
Página de início  http://www.analog.com
Logo AD - Analog Devices

AD5757 Folha de dados(HTML) 6 Page - Analog Devices

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AD5757/AD5737
Preliminary Technical Data
Rev. PrD | Page 6 of 31
TIMING CHARACTERISTICS
AVDD = 15V, AVSS = 0V/-15 V, VBOOSTA,B,C,D = +10.8 V to +33 V, DVDD = AVCC = 2.7 V to 5.5 V, DCDC disabled, AGND = DGND =
GNDSWA,B,C,D = 0 V, REFIN= +5, VOUT : RL = 1kΩ, CL = 220pF, IOUT : RL = 300Ω, all specifications TMIN to TMAX unless otherwise noted.
Table 4.
Parameter1, 2,3
Limit at TMIN, TMAX
Unit
Description
t1
33
ns min
SCLK cycle time
t2
13
ns min
SCLK high time
t3
13
ns min
SCLK low time
t4
13
ns min
SYNC falling edge to SCLK falling edge setup time
t5
13
ns min
24/32nd SCLK falling edge to SYNC rising edge
t6
198
ns min
SYNC high time
t7
5
ns min
Data setup time
t8
5
ns min
Data hold time
t9
20
µs min
SYNC rising edge to LDAC falling edge (all DACs updated or any
channel has digital slew rate control enabled)
5
µs min
SYNC rising edge to LDAC falling edge (single DAC updated)
t10
10
ns min
LDAC pulse width low
t11
500
ns max
LDAC falling edge to DAC output response time
t12
See AC Performance
Characteristics
µs max
DAC output settling time
t13
10
ns min
CLEAR high time
t14
TBD
µs max
CLEAR activation time
t15
25
ns max
SCLK rising edge to SDO valid (CL SDO = 35 pF)
t16
20
µs min
SYNC rising edge to DAC output response time (LDAC = 0) (all DACs
updated)
5
µs min
SYNC rising edge to DAC output response time (LDAC = 0) (single
DAC updated)
t17
500
ns min
LDAC falling edge to SYNC rising edge
t18
700
ns min
RESET pulsewidth
t19
20
µs min
SYNC high to next SYNC low (Ramp enabled)
5
µs min
SYNC high to next SYNC low (Ramp disabled)
1 Guaranteed by design and characterization; not production tested.
2 All input signals are specified with tR = tF = 5 ns (10% to 90% of DVDD) and timed from a voltage level of 1.2 V.
3 See Figure 2 , Figure 3 , Figure 4 and Figure 5


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