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參數資料
| 型號： | SPDAC87-CBI-V/B |
| 元件分類： | DAC |
| 英文描述： | PARALLEL, WORD INPUT LOADING, 3 us SETTLING TIME, 12-BIT DAC, CDIP24 |
| 封裝： | HERMETICALLY SEALED CERAMIC, DIP-24 |
| 文件頁數： | 1/4頁 |
| 文件大小： | 93K |
| 代理商： | SPDAC87-CBI-V/B |
165 Cedar Hill Street, Marlborough, MA 01752 Tel: 508.485.6350 Fax: 508.485.5168
www.satconelectronics.com
FUNCTIONA L DIA GRA M
Complete Monolithic 12-Bit
D /A Converter
SP D AC87
Sipex D ata Converter Line
FEA TURES
Single Chip Construction
On-Board Output A mplifier
Low Power Dissipation: 300 mW
M onotonicity Guaranteed Over Temperature
Guaranteed for Operation W ith ±12V Supplies
Buried Zener Reference
±1/2 LSB M ax Nonlinearity
PRODUCT DESCRIPTION
The SP DA C87 is a 12-bit digital-to-analog converter
with both a high stability voltage reference and
output amplifier combined on a single monolithic
chip.
Innovative circuit design reduces the total power
consumption to 300 mW which not only improves
reliability but also improves long term stability.
The SP DA C87 incorporates a fully differential, non-
saturating precision current switching cell structure
which provides greatly increased immunity to supply
voltage variation. This same structure also reduces
nonlinearities due to thermal transients as the various
bits are switched; nearly all critical components
operate at constant power dissipation.
High stability, SiCr thin film resistors are trimmed
with a fine resolution laser, resulting in lower
differential nonlinearity errors. A low noise, high
stability, subsurface Zenerdiode is used to produce a
reference voltage with excellent long term stability,
high external current capability and temperature
drift characteristics which challenge the best discrete
Zener references.
The SP DA C87 is available in a hermetically sealed
ceramic package and is specified for –55C to +125C
temperature operation. M IL-STD-883 processing is
available.
(M SB) BIT 1
BIT 2
BIT 3
BIT 4
BIT 5
BIT 6
BIT 7
BIT 8
BIT 9
BIT 10
BIT 11
(LSB) BIT 12
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
12-BIT
RESISTER
LA DDER
NETW ORK
A ND
CURRENT
SW ITCHES
REF
CONTROL
CIRCUIT
5k
6.3k
–
+
V REF OUT
GA IN A DJUST
+V S
COM M ON
SUM M ING JUNCTION
20V RA NGE
10V RA NGE
BIPOLA R OFFSET
REF INPUT
V OUT
– V S
NC
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