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AD6620ASZ

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36P37-P39P40-P42P43-P45
AD6620
–9–REV. A
MICROPORT MODE0, READ
Timing is synchronous to CLK; MODE = 0.
t
DD
DATA VALID
t
HC
t
SC
t
HC
t
ZD
t
HA
t
RDY
t
RDY
ADDRESS VALID
t
SAM
t
ZR
N N+1 N+2 N+3 N+4 N
CLK
1
WR
2
RD
2
CS
3
D[7:0]
RDY
1
A[2:0]
NOTES:
1
RDY IS DRIVEN LOW ASYNCHRONOUSLY BY RD AND CS GOING LOW AND RETURNS HIGH ON THE RISING EDGE
OF CLK "N+3" FOR INTERNAL ACCESS (A[2:0] = 000), CLK "N+2" OTHERWISE.
2
THE SIGNAL, WR, MAY REMAIN HIGH AND RD MAY REMAIN LOW TO CONTINUE READ MODE.
3
CS MUST RETURN TO HIGH STATE AND BE SAMPLED BY CLK (N+4 SHOWN) TO COMPLETE READ.
Figure 17. MODE0 Read Timing Requirements and Switching Characteristics
MICROPORT MODE0, WRITE
Timing is synchronous to CLK; MODE = 0.
DATA VALID
t
HC
t
SC
t
HC
t
SC
t
HM
ADDRESS VALID
N N+1 N+2 N+3 N*
CLK
1
WR
2
RD
2
CS
3
D[7:0]
RDY
A[2:0]
NOTES:
1
RDY IS DRIVEN LOW ASYNCHRONOUSLY BY WR AND CS GOING LOW AND RETURNS HIGH ON THE
RISING EDGE OF CLK "N+2".
2
THESE SIGNALS (R/W AND DS) MAY REMAIN IN LOW STATE TO CONTINUE WRITING DATA.
3
CS MUST RETURN TO HIGH STATE AND BE SAMPLED BY CLK (N+3 SHOWN) TO COMPLETE WRITE.
* THE NEXT WRITE MAY BE INITIATED ON CLK, N*.
t
HA
t
RDY
t
RDY
t
SAM
t
SAM
Figure 18. MODE0 Write Timing Requirements and Switching Characteristics
AD6620
–10–
REV. A
MICROPORT MODE1, READ
Timing is synchronous to CLK; MODE = 1.
DATA VALID
t
SC
ADDRESS VALID
N
N+1 N+2
N+3
CLK
1
R/W
2
DS
2
CS
3
D[7:0]
DTACK
A[2:0]
t
SAM
N+4
N
t
HC
t
DD
t
HC
t
ZD
t
HA
t
DTACK
t
DTACK
NOTES:
1
DTACK IS DRIVEN LOW ON THE RISING EDGE OF CLK "N+3" FOR INTERNAL ACCESS (A[2:0] = 000),
CLK "N=2" OTHERWISE.
2
THE SIGNAL, R/W MAY REMAIN HIGH AND DS MAY REMAIN LOW TO CONTINUE READ MODE.
3
CS MUST RETURN TO HIGH STATE AND BE SAMPLED BY CLK (N+4 SHOWN) TO COMPLETE ACCESS
AND FORCE DTACK HIGH.
t
SC
t
ZR
Figure 19. MODE1 Read Timing Requirements and Switching Characteristics
MICROPORT MODE1, WRITE
Timing is synchronous to CLK; MODE = 1.
t
SC
N
N+1 N+2
N+3
t
SAM
N*
t
DTACK
t
SC
CLK
1
R/W
2
DS
2
CS
3
D[7:0]
DTACK
A[2:0]
t
HC
t
HC
t
DTACK
t
SAM
t
HM
t
HA
NOTES:
1
ON RISING EDGE OF "N+3" CLK, DTACK IS DRIVEN LOW.
2
THESE SIGNALS (R/W AND DS) MAY REMAIN IN LOW STATE TO CONTINUE WRITING DATA.
3
CS MUST RETURN TO HIGH STATE AND BE SAMPLED BY CLK (N+3 SHOWN) TO COMPLETE WRITE
AND FORCE DTACK HIGH.
* THE NEXT WRITE MAY BE INITIATED ON CLK, N*.
DATA VALID
ADDRESS VALID
Figure 20. MODE1 Write Timing Requirements and Switching Characteristics
AD6620
–11–REV. A
ABSOLUTE MAXIMUM RATINGS*
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +4.5 V
Input Voltage . . . –0.3 V to VDD + 0.3 V (Not 5 V Tolerant)
Output Voltage Swing . . . . . . . . . . . . –0.3 V to VDD + 0.3 V
Load Capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 pF
Junction Temperature Under Bias . . . . . . . . . . . . . . . . 130°C
Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C
Lead Temperature (5 sec) . . . . . . . . . . . . . . . . . . . . . . 280°C
*Stresses greater than those listed above may cause permanent damage to the
device. These are stress ratings only; functional operation of the device at these or
any other conditions greater than those indicated in the operational sections of this
specification is not implied. Exposure to absolute maximum rating conditions for
extended periods may affect device reliability.
Thermal Characteristics
80-Lead Plastic Quad Flatpack:
θ
JA
= 44°C/W
θ
JC
= 11°C/W
EXPLANATION OF TEST LEVELS
I. 100% Production Tested.
II. 100% Production Tested at 25°C, and Sampled Tested at
Specified Temperatures.
III. Sample Tested Only.
IV. Parameter Guaranteed by Design and Analysis.
V. Parameter is Typical Value Only.
VI. 100% Production Tested at 25°C, and Sampled Tested at
Temperature Extremes.
ORDERING GUIDE
Package
Model Temperature Range Package Description Option
AD6620AS –40°C to +85°C (Ambient) 80-Lead PQFP (Plastic Quad Flatpack) S-80A
AD6620S/PCB Evaluation Board with AD6620AS and Software
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 AD6620 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
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36P37-P39P40-P42P43-P45

AD6620ASZ

Mfr. #:
Buy AD6620ASZ
Manufacturer:
Analog Devices Inc.
Description:
Up-Down Converters 65MSPS Digital Rcvr Signal Processor
Lifecycle:
New from this manufacturer.
Delivery:
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