AD9845AJST

更新时间： 2024-02-29 01:16:50

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
22页	250K
描述
Complete 12-Bit 30 MSPS CCD Signal Processor

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数据手册

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AD9845AJST 数据手册

AD9845A

(C_L= 20 pF, f_SAMP= 30 MHz, CCD-Mode Timing in Figures 10 and 11, AUX-Mode Timing in Figure 7.

Serial Timing in Figures 26–29.)

TIMING SPECIFICATIONS

Parameter

Symbol

Min

Typ

Max

Unit

SAMPLE CLOCKS

DATACLK, SHP, SHD Clock Period

DATACLK Hi/Low Pulsewidth

SHP Pulsewidth

t_CONV

t_ADC

t_SHP

t_SHD

t_CDM

t_COB

t_S1

Pixels

16.7

8.3

SHD Pulsewidth

CLPDM Pulsewidth

CLPOB Pulsewidth¹

SHP Rising Edge to SHD Falling Edge

SHP Rising Edge to SHD Rising Edge

Internal Clock Delay

8.3

16.7

3.0

t_S2

t_ID

Inhibited Clock Period

t_INH

DATA OUTPUTS

Output Delay

Output Hold Time

Pipeline Delay

t_OD

t_H

14.5

7.6

Cycles

7.0

SERIAL INTERFACE

Maximum SCK Frequency

SL to SCK Setup Time

SCK to SL Hold Time

SDATA Valid to SCK Rising Edge Setup

SCK Falling Edge to SDATA Valid Hold

SCK Falling Edge to SDATA Valid Read

f_SCLK

t_LS

t_LH

t_DS

t_DH

t_DV

MHz

NOTES

¹Minimum CLPOB pulsewidth is for functional operation only. Wider typical pulses are recommended to achieve low noise clamp performance.

Speciﬁcations subject to change without notice.

ORDERING GUIDE

ABSOLUTE MAXIMUM RATINGS

With

Respect

Temperature

Range

Package

Description

Package

Option

Model

Parameter

Min Max

Unit

AD9845AJST –20°C to +85°C Thin Plastic

ST-48

AVDD1, AVDD2

DVDD1, DVDD2

DRVDD

AVSS

DVSS

DRVSS –0.3 +3.9

–0.3 +3.9

Quad Flatpack

(LQFP)

Digital Outputs

SHP, SHD, DATACLK

CLPOB, CLPDM, PBLK DVSS

SCK, SL, SDATA

VRT, VRB, CMLEVEL

BYP1-4, CCDIN

Junction Temperature

Lead Temperature

(10 sec)

DRVSS –0.3 DRVDD + 0.3

°C

THERMAL CHARACTERISTICS

Thermal Resistance

48-Lead LQFP Package

DVSS

–0.3 DVDD + 0.3

–0.3 AVDD + 0.3

150

DVSS

AVSS

_JA= 92°C

300

CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily

accumulate on the human body and test equipment and can discharge without detection. Although

the AD9845A features proprietary ESD protection circuitry, permanent damage may occur on

devices subjected to high-energy electrostatic discharges. Therefore, proper ESD precautions are

recommended to avoid performance degradation or loss of functionality.

WARNING!

ESD SENSITIVE DEVICE

REV. 0

–5–

1 2 3 456 7 8...22

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