AD7861AP Analog Devices Inc, AD7861AP Datasheet - Page 3

• Manufacturer Part Number: AD7861AP
• Description: IC ADC 11BIT 4CH 44-PLCC
• Manufacturer: Analog Devices Inc

Specifications of AD7861AP

• Rohs Status: RoHS non-compliant
• Number Of Bits: 11
• Sampling Rate (per Second): 28.6k
• Data Interface: Parallel
• Number Of Converters: 1
• Power Dissipation (max): 50mW
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 44-PLCC

REV. B
Number
1
2
3
4
5
6
7
8
9
10
11
12
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 AD7861 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.
RESET
CLK
A0–A1
DATA
CLK
BUS
CS
RD
Figure 2. Write Cycle Timing Diagram
CLK
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
Table I. AD7861 Timing Parameters (T
Figure 1. Clock and Reset Timing
su
su
dly
pwl
pwh
hd
hd
hd
per
pwh
pwl
pwl
csb_rdb
addr_rdb
rdb_data
rdb_addr
rdb_csb
rdb_data
clk
rdb
clk
resetb
rdb
clk
1, 2
10
3
4
9
12
7, 8
11
6
AD7861 Timing Requirements
CS Low Before Falling Edge of RD
ADDR Valid Before Falling Edge of RD
DATA Valid After Falling Edge of RD
RD Pulsewidth, Low
RD Pulsewidth, High
DATA Hold After Rising Edge of RD
ADDR Hold After Rising Edge of RD
CS Hold After Rising Edge of RD
CLK Period
CLK Pulsewidth, High
CLK Pulsewidth, Low
RESET Pulsewidth, Low
5
A
= –4
–3–
0 C to +85 C and V
ABSOLUTE MAXIMUM RATINGS*
Supply Voltage (V
Digital Input Voltage . . . . . . . . . . . . . . . . . . . . . –0.3 V to V
Analog Input Voltage . . . . . . . . . . . . . . . . . . . . . –0.3 V to V
Analog Reference Input Voltage . . . . . . . . . . .
Digital Output Voltage Swing . . . . . . . . . . . . . . –0.3 V to V
Analog Reference Output Swing . . . . . . . . . . .
Operating Temperature . . . . . . . . . . . . . . . . . –40°C to +85°C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . +280°C
*
Model
AD7861AP
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.
DD
DD
Temperature Range
–40°C to +85°C
= +5 V unless otherwise noted)
) . . . . . . . . . . . . . . . . . . –0.3 V to +7.0 V
ORDERING GUIDE
Min
0
0
–
25
25
10
0
0
80
20
20
2 × tperclk
WARNING!
Max
–
–
25
–
–
–
–
–
160
–
–
–
ESD SENSITIVE DEVICE
Package Option
P-44A
AD7861
–0.3 V to V
–0.3 V to V
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
DD
DD
DD
DD
DD