Texas Instruments DAC 3202 Series, Руководство пользователя

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6.12 Timing Requirements: SPI Write Operation
all input signals are specified with t
r
= t
f
= 1 V/ns (10% to 90% of V
IO
) and timed from a voltage level of (VIL + VIH) / 2,
1.7 V ≤ V
IO
≤ 5.5 V, 1.7 V ≤ V
DD
≤ 5.5 V, and –40°C ≤ T
A
≤ +125°C
MIN NOM MAX UNIT
f
(SCLK)
Serial clock frequency 50 MHz
t
SCLKHIGH
SCLK high time 9 ns
t
SCLKLOW
SCLK low time 9 ns
t
SDIS
SDI setup time 8 ns
t
SDIH
SDI hold time 8 ns
t
CSS
CS to SCLK falling edge setup time 18 ns
t
CSH
SCLK falling edge to CS rising edge 10 ns
t
CSHIGH
CS hight time 50 ns
t
DACWAIT
Sequential DAC update wait time for same channel 2 µs
t
BCASTWAIT
Broadcast DAC update wait time 2 µs
6.13 Timing Requirements: SPI Read and Daisy Chain Operation (FSDO = 0)
all input signals are specified with t
r
= t
f
= 1 V/ns (10% to 90% of V
IO
) and timed from a voltage level of (VIL + VIH) / 2,
1.7 V ≤ V
IO
≤ 5.5 V, 1.7 V ≤ V
DD
≤ 5.5 V, –40°C ≤ T
A
≤ +125°C, and FSDO = 0
MIN NOM MAX UNIT
f
(SCLK)
Serial clock frequency 1.25 MHz
t
SCLKHIGH
SCLK high time 350 ns
t
SCLKLOW
SCLK low time 350 ns
t
SDIS
SDI setup time 8 ns
t
SDIH
SDI hold time 8 ns
t
CSS
SYNC to SCLK falling edge setup time 400 ns
t
CSH
SCLK falling edge to SYNC rising edge 400 ns
t
CSHIGH
SYNC hight time 1 µs
t
SDODLY
SCLK rising edge to SDO falling edge, I
OL
≤ 5 mA, C
L
= 20 pF. 300 ns
6.14 Timing Requirements: SPI Read and Daisy Chain Operation (FSDO = 1)
all input signals are specified with t
r
= t
f
= 1 V/ns (10% to 90% of V
IO
) and timed from a voltage level of (VIL + VIH) / 2,
1.7 V ≤ V
IO
≤ 5.5 V, 1.7 V ≤ V
DD
≤ 5.5 V, –40°C ≤ T
A
≤ +125°C, and FSDO = 1
MIN NOM MAX UNIT
f
(SCLK)
Serial clock frequency 2.5 MHz
t
SCLKHIGH
SCLK high time 175 ns
t
SCLKLOW
SCLK low time 175 ns
t
SDIS
SDI setup time 8 ns
t
SDIH
SDI hold time 8 ns
t
CSS
SYNC to SCLK falling edge setup time 300 ns
t
CSH
SCLK falling edge to SYNC rising edge 300 ns
t
CSHIGH
SYNC hight time 1 µs
t
SDODLY
SCLK rising edge to SDO falling edge, I
OL
≤ 5 mA, C
L
= 20 pF. 300 ns
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DAC53202, DAC63202
SLASF47 – MAY 2022
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