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ADM8840
Timing Specifications
–4–
REV. PrG
2/03
PRELIMINARY TECHNICAL DATA
ORDERING GUIDE
Model
Temperature
Range
Package
Option
ADM8840ACP -40°C to +85°C
CP-32
PIN CONFIGURATION
PARAMETER
Min
Typ
Max
Units
Test Conditions /Comments
POWER-UP SEQUENCE
5V Rise time, T
R5V
+15V Rise time, T
R15V
-15V Fall time, T
F15V
Delay between V
CC
rise
and SHDN rise, T
DELAY1
Delay between -15V fall
and +15V rise, T
DELAY2
TBD
TBD
TBD
us 10% to 90%, Figure 2
ms 10% to 90%, Figure 2
ms 90% to 10%, Figure 2
TBD
ms Figure 2
TBD
ms Figure 2
POWER- DOWN SEQUENCE
5V Fall time, T
F5V
+15V Fall time, T
F15V
-15V Rise time, T
R15V
TBD
TBD
TBD
ms 90% to 10%, Figure 2
ms 90% to 10%, Figure 2
ms 10% to 90%, Figure 2
SERIAL INTERFACE
t1
TBD
ns CS/LDAC falling edge to SCLK
Rising Edge; Note 1; Note2
ns SCLK High Pulsewidth; Note 1; Note2
ns SCLK Low Pulsewidth; Note 1; Note2
ns Minumum CS/LDAC high time;
Note 1; Note2
ns SCLK Rising Edge to CS/LDAC
Rising Edge; Note 1; Note2
ns DATA Setup time; Note 1; Note2
ns DATA Hold time; Note 1; Note2
t2
t3
t4
TBD
TBD
TBD
t5
TBD
t6
t7
TBD
TBD
NOTES
1. Guaranteed by Design. Not 100% Production Tested.
2. See Timing Diagram in Figure 4.
* Specifications are target values and are subject to change without notice.
V
CC
= +3V-10%,+20%, T
A
=-40°C to +85°C
ABSOLUTE MAXIMUM RATINGS*
(TA=25
o
C unless otherwise noted.)
Supply Voltage
Input Voltage on Digital Inputs
Output Short Circuit Duration to GND 10 seconds
Output Voltage
+5.0V Output
-15.0V Output
+15.0V Output
Operating Temperature Range
Power Dissipation
Storage Temperature Range
ESD
-0.3 V to +4.0 V
-0.3 V to +4.0 V
-0.3 V to +6.0 V
-17 V to +0.3 V
-0.3 V to +17 V
-40°C to +85°C
50mW
-65°C to +150°C
Class I
*Stresses above those listed under “Absolute Maximum Ratings” may
cause permanent 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.
THERMAL CHARACTERISTICS
32-Lead LFCSP Package:
JA
= 28°C/Watt
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
21
22
23
19
20
ADM8840
TOP VIEW
(NOT TO SCALE)
16
17
18
C
C1+
VOUT
15VOUT
C
C
C
C
C
-
GND
5VOUT
V
CC
C3-
DAC1_SD
DAC2_SD
G
V
CC
5VIN