REV. A
–3–
DAC8408
@ V
DD
= +5 V; V
REF
= 610 V; V
OUT
A, B, C, D = 0 V; T
A
= –558C to +1258C apply for
DAC8408AT/BT, T
A
= –408C to +858C apply for DAC8408ET/FT/FP/FPC/FS; T
A
= 08C to +708C apply for DAC8408GP, unless otherwise noted.
Specifications apply for DAC A, B, C, & D.
Continued
ELECTRICAL CHARACTERISTICS
DAC8408
Parameter Symbol Conditions Min Typ Max Units
POWER SUPPLY
Voltage Range V
DD
4.5 5.5 V
Supply Current
8
I
DD
50 µA
Supply Current
9
I
DD
T
A
= +25°C 1.0 mA
T
A
= Full Temperature Range 1.5 mA
NOTES
1
This is an end-point linearity specification.
2
Guaranteed to be monotonic over the full operating temperature range.
3
ppm/°C of FSR (FSR = Full Scale Range = V
REF
-1 LSB.)
4
Input Resistance Temperature Coefficient = +300ppm/°C.
5
Logic Inputs are MOS gates. Typical input current at +25°C Is less than 10 nA.
6
Guaranteed by design.
7
From Digital Input to 90% of final analog output current.
8
All Digital Inputs “0” or V
DD
.
9
All Digital Inputs V
IH
or V
IL
.
10
See Timing Diagram.
11
Digital Inputs = 0 V to V
DD
or V
DD
to 0 V.
12
Extrapolated: t
S
(1/2 LSB) = t
PD
+ 6.2τ where τ = the measured first time con-
stant of the final RC decay.
13
All Digital Inputs = 0 V; V
REF
= +10 V.
Specifications subject to change without notice.
Package Type u
JA
* u
JC
Units
28-Pin Hermetic DIP (T) 55 10 °C/W
28-Pin Plastic DIP (P) 53 27 °C/W
28-Pin SOL (S) 68 23 °C/W
28-Contact PLCC (PC) 66 29 °C/W
*θ
JA
is specified for worst case mounting conditions, i.e., θ
JA
is specified for
device in socket for cerdip and P-DIP packages; θ
JA
is specified for device
soldered to printed circuit board for SOL and PLCC packages.
CAUTION
1. Do not apply voltages higher than V
DD
+0.3 V or less than
–0.3 V potential on any terminal except V
REF
and R
FB
.
2. The digital control inputs are diode-protected; however,
permanent damage may occur on unconnected inputs from
high energy electrostatic fields. Keep in conductive foam at
all times until ready to use.
3. Use proper antistatic handling procedures.
4. Absolute Maximum Ratings apply to both packaged devices
and DICE. Stresses above those listed under Absolute Maxi-
mum Ratings may cause permanent damage to the device.
ABSOLUTE MAXIMUM RATINGS
(T
A
= +25°C, unless otherwise noted.)
V
DD
to I
OUT
2A
, I
OUT
2B
, I
OUT
2C
, I
OUT
2D
. . . . . . . . . .0 V, +7 V
V
DD
to DGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0 V, +7 V
I
OUT
1A
, I
OUT
1B
,
I
OUT 1C
, I
OUT 1D
to DGND . . . . . . . . . –0.3 V to V
DD
+0.3 V
R
FB
A, R
FB
B, R
FB
C, R
FB
D to I
OUT
. . . . . . . . . . . . . . . . . ±25 V
I
OUT 2A
, I
OUT 2B
,
I
OUT 2C
, I
OUT 2D
to DGND . . . . . . . . . –0.3 V to V
DD
+ 0.3 V
DB0 through DB7 to DGND . . . . . . . . –0.3 V to V
DD
+ 0.3 V
Control Logic
Input Voltage to DGND . . . . . . . . . . –0.3 V + V
DD
+ 0.3 V
V
REF
A, V
REF
B, V
REF
C, V
REF
D to
I
OUT 2A
, I
OUT 2B
, I
OUT 2C
, I
OUT 2D
. . . . . . . . . . . . . . . . ±25 V
Operating Temperature Range
Commercial Grade (GP) . . . . . . . . . . . . . . . . 0°C to +70°C
Industrial Grade (ET, FT, FP, FPC, FS) . –40°C to +85°C
Military Grade (AT, BT) . . . . . . . . . . . . . .–55°C to +125°C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . +150°C
Storage Temperature . . . . . . . . . . . . . . . . . . .–65°C to +150°C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . . +300°C
PIN CONNECTIONS
DAC8408
TOP VIEW
(Not to Scale)
