AS1537 查看數據表（PDF） - austriamicrosystems AG

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AS1537

12-Bit, Single Supply, Low-Power, 73ksps A/D Converters

austriamicrosystems AG 

AS1536/AS1537

Datasheet - Electrical Characteristics

Timing Characteristics

VDD = +2.7 to +5.25V, TAMB = TMIN to TMAX (unless otherwise specified).

Table 4. Timing Characteristics

Parameter

Symbol

Conditions

Acquisition Time 1

tACQ

SCLK Falling-to-DOUT Valid

tDO

Figure 3, CLOAD = 50pF

CSN Falling-to-Output Enable

tDV

Figure 3, CLOAD = 50pF

CSN Rising-to-Output Disable

tTR

Figure 4, CLOAD = 50pF

SCLK Clock Frequency

fSCLK

SCLK Pulse Width High

tCH

SCLK Pulse Width Low

tCL

SCLK Low-to-CSN Falling Setup

Time

tCS0

DOUT Rising-to-SCLK Rising 2

tSTR

CSN Pulse Width

tCS

Min Typ Max Units

1.5

µs

20

200

ns

240

ns

240

ns

0

2.1 MHz

200

ns

200

ns

50

ns

0

ns

240

ns

1. To guarantee acquisition time, tACQ is the maximum time the device takes to acquire the signal, and is also the

minimum time needed for the signal to be acquired

2. Guaranteed by design; not subject to production testing.

Figure 3. DOUT Enable-Time Load Circuits

DOUT

6kΩ

CLOAD

50pF

DGND

GND

High-impedance to VOH and VOL to VOH

DOUT

+2.7V

6kΩ

CLOAD

50pF

DGND

High-impedance to VOL and VOH to VOL

Figure 4. DOUT Disable-Time Load Circuits

DOUT

6kΩ

CLOAD

50pF

DGND

GND

VOH to high-impedance

DOUT

+2.7V

6kΩ

CLOAD

50pF

DGND

VOL to high-impedance

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