AD7485 datasheet(3/16 Pages) AMICC

3 / 16 page

REV. 0

AD7485

–3–

Parameter

Specification

Unit

Test Conditions/Comments

POWER REQUIREMENTS

VDD

±5%

VDRIVE

2.7

V min

5.25

V max

IDD

Normal Mode (Static)

mA max

Normal Mode (Operational)

mA max

NAP Mode

0.6

mA max

STANDBY Mode

µA max

0.5

µA typ

Power Dissipation

Normal Mode (Operational)

mW max

NAP Mode

mW max

STANDBY Mode

µW max

NOTES

1Temperature ranges as follows: –40

°C to +85°C.

2SINAD figures quoted include external analog input circuit noise contribution of approximately 1 dB.

3See Typical Performance Characteristics section for analog input circuits used.

4See Terminology.

5Sample tested @ 25

°C to ensure compliance.

6Current drawn from external reference during conversion.

LOAD = 200

µA.

8Digital input levels at GND or V

DRIVE.

Specifications subject to change without notice.

Parameter

Symbol

Min

Typ

Max

Unit

Master Clock Frequency

fMCLK

0.01

MHz

MCLK Period

100000

Conversion Time

CONVST Low Period (Mode 1)2

CONVST High Period (Mode 1)2

MCLK High Period

0.4

0.6

MCLK Low Period

0.4

0.6

CONVST Falling Edge to MCLK Rising Edge

7ns

MCLK Rising Edge to MSB Valid

Data Valid before SCO Falling Edge

Data Valid after SCO Falling Edge

t10

CONVST Rising Edge to SDO Three-State

t11

6ns

CONVST Low Period (Mode 2)2

t12

2ns

CONVST High Period (Mode 2)3

t13

CONVST Falling Edge to TFS Falling Edge

t14

TFS Falling Edge to MSB Valid

t15

TFS Rising Edge to SDO Three-State

t16

8ns

TFS Low Period4

t17

TFS High Period4

t18

MCLK Fall Time

t19

525

MCLK Rise Time

t20

525

MCLK – SCO Delay

t21

625

NOTES

1All timing specifications given above are with a 25 pF load capacitance. With a load capacitance greater than this value, a digital buffer or latch must be used.

CONVST idling high. See Serial Interface section for further details.

CONVST idling low. See Serial Interface section for further details.

TFS can also be tied low in this mode.

Specifications subject to change without notice.

TIMING CHARACTERISTICS

1 (VDD = 5 V

5%, AGND = DGND = 0 V, VREF = External; all specifications TMIN to TMAX and

valid for VDRIVE = 2.7 V to 5.25 V, unless otherwise noted.)

AD7485 Datasheet(PDF) 3 Page - AMIC Technology

AD7485 Datasheet(HTML) 3 Page - AMIC Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Datasheet Download

Link URL