Datasheet
REV. D
AD7660
–4–
ABSOLUTE MAXIMUM RATINGS
1
Analog Inputs
IN
2
, REF, INGND, REFGND . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . AVDD + 0.3 V to AGND – 0.3 V
Ground Voltage Differences
AGND, DGND, OGND . . . . . . . . . . . . . . . . . . . . . ± 0.3 V
Supply Voltages
AVDD, DVDD, OVDD . . . . . . . . . . . . . . . . –0.3 V to +7 V
AVDD to DVDD,
AVDD to OVDD . . . . . . . . . . . . . ± 7 V
DVDD to OVDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 7 V
Digital Inputs
Except the Databus D(7:4) . . . –0.3 V to DVDD + 0.3 V
Databus Inputs D(7:4) . . . . . . –0.3 V to OVDD + 0.3 V
Internal Power Dissipation
3
. . . . . . . . . . . . . . . . . . . 700 mW
Internal Power Dissipation
4
. . . . . . . . . . . . . . . . . . . . . 2.5 W
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . 150∞C
Storage Temperature Range . . . . . . . . . . . . –65∞C to +150∞C
Lead Temperature Range
(Soldering 10 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . 300∞C
NOTES
1
Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
2
See Analog Input section.
3
Specification is for device in free air: 48-Lead LQFP: q
JA
= 91∞C/W, q
JC
= 30∞C/W.
4
Specification is for device in free air: 48-Lead LFCSP: q
JA
= 26∞C/W.
I
OH
500A
1.6mA I
OL
TO OUTPUT
PIN
1.4V
C
L
60pF
*
*IN SERIAL INTERFACE MODES, THE SYNC, SCLK, AND
SDOUT TIMINGS ARE DEFINED WITH A MAXIMUM LOAD
C
L
OF 10pF; OTHERWISE, THE LOAD IS 60pF MAXIMUM.
Figure 1. Load Circuit for Digital Interface Timing
PIN CONFIGURATION
36
35
34
33
32
31
30
29
28
27
26
25
13 14
15 16 17 18
19 20
21 22
23 24
1
2
3
4
5
6
7
8
9
10
11
12
48
47 46
45 44 39 38 3743 42 41 40
PIN 1
IDENTIFIER
TOP VIEW
(Not to Scale)
AGND
CNVST
PD
RESET
CS
RD
DGND
AGND
AVDD
NC
DGND
OB/2C
NC
NC
SER/PAR
D0
D1
D2
BUSY
D15
D14
D13
AD7660
D3
D12
D4/EXT/INT
D5/INVSYNC
D6/INVSCLK
D7/RDC/SDIN
OGND
OVDD
DVDD
DGND
D8/SDOUT
D9/SCLK
D10/SYNC
D11/RDERROR
NC
NC
NC
NC
NC
IN
NC
NC
NC
INGND
REFGND
REF
NC = NO CONNECT
t
DELAY
t
DELAY
0.8V
0.8V 0.8V
2V2V
2V
Figure 2. Voltage Reference Levels for Timings
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 AD7660 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
ORDERING GUIDE
Model Temperature Range Package Description Package Option
AD7660AST –40∞C to +85∞C Quad Flatpack (LQFP) ST-48
AD7660ASTRL –40∞C to +85∞C Quad Flatpack (LQFP) ST-48
AD7660ACP –40∞C to +85∞CChip Scale (LFCSP) CP-48
AD7660ACPRL –40∞C to +85∞CChip Scale (LFCSP) CP-48
EVAL-AD7660CB
1
Evaluation Board
EVAL-CONTROL BRD2
2
Controller Board
NOTES
1
This board can be used as a standalone evaluation board or in conjunction with the EVAL-CONTROL BRD2 for
evaluation/demonstration purposes.
2
This board allows a PC to control and communicate with all Analog Devices evaluation boards ending in the CB designators.