CS4385-CQZR Cirrus Logic Inc, CS4385-CQZR Datasheet - Page 18

• Manufacturer Part Number: CS4385-CQZR
• Description: IC,D/A CONVERTER,OCTAL,24-BIT,QFP,48PIN
• Manufacturer: Cirrus Logic Inc

Specifications of CS4385-CQZR

• Number Of Bits: 24
• Data Interface: Serial
• Number Of Converters: 8
• Voltage Supply Source: Analog and Digital
• Power Dissipation (max): 520mW
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 598-1154 - BOARD EVAL FOR CS4385 DAC
• Settling Time: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

18
SWITCHING CHARACTERISTICS - CONTROL PORT - SPI FORMAT
Inputs: Logic 0 = GND, Logic 1 = VLC, C
Notes:
CCLK Clock Frequency
RST Rising Edge to CS Falling
CCLK Edge to CS Falling
CS High Time Between Transmissions
CS Falling to CCLK Edge
CCLK Low Time
CCLK High Time
CDIN to CCLK Rising Setup Time
CCLK Rising to DATA Hold Time
Rise Time of CCLK and CDIN
Fall Time of CCLK and CDIN
19. t
20. Data must be held for sufficient time to bridge the transition time of CCLK.
21. For F
spi
is only needed before first falling edge of CS after RST rising edge. t
CCLK
CDIN
SCK
RST
CS
< 1 MHz.
Parameter
t srs
t spi
Figure 6. Control Port Timing - SPI Format
t r2
t css
L
= 20 pF.
t scl
(Note 19)
(Note 20)
(Note 21)
(Note 21)
t f2
t dsu t
t sch
dh
Symbol
f
t
t
t
t
t
t
t
sclk
t
csh
css
sch
dsu
t
t
srs
spi
scl
dh
r2
f2
Min
500
500
1.0
20
66
66
40
15
-
-
-
spi
= 0 at all other times.
t csh
Max
100
100
6
-
-
-
-
-
-
-
-
CS4385
DS671F2
Unit
MHz
ns
ns
µs
ns
ns
ns
ns
ns
ns
ns