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參數(shù)資料
| 型號(hào)： | DAC8222FW |
| 廠商： | PRECISION MONOLITHICS INC |
| 元件分類： | DAC |
| 英文描述： | Dual 12-Bit Double-Buffered Multiplying CMOS D/A Converter |
| 中文描述： | 12-BIT DAC, CDIP24 |
| 文件頁數(shù)： | 2/15頁 |
| 文件大小： | 491K |
| 代理商： | DAC8222FW |
REV. C
–2–
DAC8222–SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
(@ V
DD
= +5 V or +15 V, V
REF A
= V
REF B
= +10 V, V
OUT A
= V
OUT B
= 0 V; AGND = DGND = 0 V;
T
A
= Full Temperature Range Specified in Absolute Maximum Ratings; unless otherwise noted. Specifications apply for DAC A and DAC B.)
Parameter
Symbol Conditions
Min
Typ
Max
Units
STATIC ACCURACY
Resolution
Relative Accuracy
N
INL
12
Bits
LSB
LSB
LSB
LSB
LSB
LSB
Endpoint Linearity Error
DAC8222A/E/G
DAC8222F/H
±
1/2
±
1
±
1
±
1
±
2
±
4
Differential Nonlinearity
Full-Scale Gain Error
1
DNL
G
FSE
All Grades are Guaranteed Monotonic
DAC8222A/E
DAC8222G
DAC8222F/H
Gain Temperature Coefficient
Gain/
Temperature
Output Leakage Current
I
OUT A
(Pin 2),
I
(Pin 24)
Input Resistance
(V
REF A
, V
REF B
)
Input Resistance Match
TCG
FS
(Notes 2, 7)
±
2
±
5
ppm/
°
C
I
LKG
All Digital Inputs =
0000 0000 0000
T
A
= +25
°
C
T
A
= Full Temp. Range
±
5
±
10
±
50
nA
nA
R
REF
R
REF
R
REF
(Note 9)
8
11
±
0.2
15
±
1
k
%
DIGITAL INPUTS
Digital Input High
V
INH
V
DD
= +5 V
V
DD
= +15 V
V
DD
= +5 V
V
DD
= +15 V
V
= 0 V or V
DD
and V
or V
INH
DB0–DB11
WR
,
LDAC
,
DAC A
/DAC B
2.4
13.5
V
V
V
V
μ
A
μ
A
pF
pF
Digital Input Low
V
INL
0.8
1.5
1
±
10
10
15
Input Current
I
IN
T
A
= +25
°
C
T
A
= Full Temp. Range
±
0.001
Input Capacitance
2
C
IN
POWER SUPPLY
Supply Current
I
DD
All Digital Inputs V
or V
INH
All Digital Inputs 0 V or V
DD
2
100
mA
μ
A
10
DC Power Supply
Rejection Ratio
(
Gain/
V
DD
)
AC PERFORMANCE CHARACTERISTICS
2
Propagation Delay
4, 5
Current Settling Time
5, 6
Output Capacitance
PSRR
V
DD
=
±
5%
0.002
%/%
t
PD
t
S
C
O
T
A
= +25
°
C
T
= +25
°
C
Digital Inputs = All 0s
C
, C
Digital Inputs = All 1s
C
OUT A
, C
OUT B
V
to I
; V
= 20 V p-p;
f = 100 kHz; T
A
= +25
°
C
V
to I
; V
= 20 V p-p;
f = 100 kHz; T
A
= +25
°
C
350
1
90
90
120
120
–70
–70
–70
–70
ns
μ
s
pF
pF
pF
pF
dB
dB
dB
dB
AC Feedthrough at
I
OUT A
or I
OUT B
FT
A
FT
B
SWITCHING CHARACTERISTICS
2, 3
V
= +5 V
–40
°
C to +85
°
C
8
–55
°
C to +125
°
C
180
V
= +15 V
All Temps
10
60
+25
°
C
150
DAC Select to
Write Set-Up Time
DAC Select to
Write Hold Time
LDAC
to
Write Set-Up Time
LDAC
to
Write Hold Time
Data Valid to
Write Set-Up Time
Data Valid to
Write Hold Time
Write Pulse Width
LDAC
Pulse Width
NOTES
1
Measured using internal R
FB A
and R
FB B
. Both DAC digital inputs = 1111 1111 1111.
1
2
Guaranteed and not tested.
1
3
See timing diagram.
1
4
From 50% of digital input to 90% of final analog output current.
V
REF A
= V
REF B
= +10 V; OUT A, OUT B load = 100
, C
EXT
= 13 pF.
1
5
WR
LDAC
DD
or V
DD
to 0 V.
t
AS
210
ns min
t
AH
0
0
0
0
ns min
t
LS
80
100
120
60
ns min
t
LH
20
20
20
20
ns min
t
DS
220
240
260
100
ns min
t
DH
0
0
0
10
ns min
t
WR
t
LWD
130
100
160
120
170
130
90
60
ns min
ns min
1
6
Settling time is measured from 50% of the digital input change to where the
output voltage settles within 1/2 LSB of full scale.
1
7
Gain TC is measured from +25
°
C to T
or from +25
°
C to T
.
1
8
These limits apply for the commercial and industrial grade products.
1
9
Absolute temperature coefficient is approximately +50 ppm/
°
C.
10
These limits also apply as typical values for V
DD
= +12 V with +5 V CMOS
logic levels and T
A
= +25
°
C.
Specifications subject to change without notice.
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