Datasheet

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TIMING CHARACTERISTICS
DAC8571
SLAS373A – DECEMBER 2002 – REVISED JULY 2003
ELECTRICAL CHARACTERISTICS (continued)
V
DD
= +2.7 V to +5.5 V; R
L
= 2 k Ω to GND; C
L
= 200 pF to GND; low power mode; all specifications -40 °C to 105 °C (unless
otherwise noted)
DAC8571
PARAMETER CONDITIONS MIN TYP MAX UNITS
V
DD
= +4.5 V to +5.5 V V
IH
= V
DD
, V
IL
= GND, fast settling 250 400 µA
V
IH
= V
DD
, V
IL
= GND, low power 160 225
V
DD
= +2.7 V to +3.6 V V
IH
= V
DD
, V
IL
= GND, fast settling 240 380 µA
V
IH
= V
DD
, V
IL
= GND, low power 140 200
I
DD
(all power-down modes) DAC active, I
ref
included
V
DD
= +4.5 V to +5.5 V V
IH
= V
DD
and V
IL
= GND 0.2 1 µA
V
DD
= +2.7 V to +3.6 V V
IH
= V
DD
and V
IL
= GND 0.05 1 µA
POWER EFFICIENCY
I
OUT
/I
DD
I
L
= 2 mA, V
DD
= +5 V 93%
V
DD
= +2.7 V to +5.5 V; R
L
= 2 k Ω to GND; all specifications -40 °C to 105 °C (unless otherwise noted)
SYMBOL PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
Standard mode 100 kHz
Fast mode 400 kHz
t
SCL
SCL clock frequency
High-speed mode, C
B
- 100pF max 3.4 MHz
High-speed mode, C
B
- 400pF max 1.7 MHz
Standard mode 4.7 µs
Bus free time between a STOP and
t
BUF
START condition
Fast mode 1.3 µs
Standard mode 4.0 \ µs
Hold time (repeated) START con-
t
HO
; t
STA
Fast mode 600 ns
dition
High-speed mode 160 ns
Standard mode 4.7 µs
t
LOW
LOW period of the SCL clock
Fast mode 1.3 µs
Standard mode 4.0 µs
Fast mode 600 ns
t
HIGH
HIGH period of the SCL clock
High-speed mode, C
B
- 100pF max 60 ns
High-speed mode, C
B
- 400pF max 120 ns
Standard mode 4.7 µs
Setup time for a repeated START
t
SU
; t
STA
Fast mode 600 ns
condition
High-speed mode 160 ns
Standard mode 250 ns
t
SU
; t
DAT
Data setup time Fast mode 100 ns
High-speed mode 10 ns
Standard mode 0 0.9 µs
Fast mode 0 0.9 µs
t
HD
; t
DAT
Data hold time
High-speed mode, C
B
- 100pF max 0 70 ns
High-speed mode, C
B
- 400pF max 0 150 ns
Standard mode 20 + 0.1C
B
1000 ns
Fast mode 20 + 0.1C
B
300 ns
t
RCL
Rise time of SCL signal
High-speed mode, C
B
- 100pF max 10 40 ns
High-speed mode, C
B
- 400pF max 20 80 ns
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