AS1545_1 AMSCO [austriamicrosystems AG], AS1545_1 Datasheet - Page 26

• Manufacturer Part Number: AS1545_1
• Description: Dual, 12-Bit, 1MSPS, SAR ADC
• Manufacturer: AMSCO [austriamicrosystems AG]

AS1545
Datasheet - A p p l i c a t i o n I n f o r m a t i o n
Figure 47. Exiting Partial Power-Down Mode
Figure 48. Entering Full Power-Down Mode
Figure 49. Exiting Full Power-Down Mode
Note: It is not necessary to complete the 15 SCLKs once CSN is brought high to enter a power-down mode.
The required power-up time must elapse before a conversion can be initiated, as shown in
Partial Power-Down Mode
This mode is intended for use in applications where slower throughput rates are required. Either the ADC is powered
down between each conversion, or a series of conversions may be performed at a high throughput rate, and the ADC
is then powered down for a relatively long duration between these bursts of several conversions. When the AS1545 is
in partial power-down, all analog circuitry is powered down except for the on-chip reference and reference buffer.
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CSN
SCLK
D
D
OUT
OUT
CSN
CSN
SCLK
D
D
SCLK
D
D
OUT
OUT
OUT
OUT
A
B
A
B
A
B
The part enters partial power down
1
The part begins to power-up
The part begins to power-up
1
1
2
INVALID DATA
INVALID DATA
INVALID DATA
t
t
power-up1
power-up1
The part begins to power-up
10
10
10
Revision 1.01
15
Three-State
15
15
1
2
The part is fully powered-up
The part is fully powered-up
1
1
The part enters fully powered down
INVALID DATA
VALID DATA
VALID DATA
Figure
10
15
15
49.
15
Three-State
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