AD664BD-BIP Analog Devices Inc, AD664BD-BIP Datasheet - Page 4
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AD664BD-BIP
Manufacturer Part Number
AD664BD-BIP
Description
IC DAC 12BIT QUAD MONO 28-CDIP
Manufacturer
Analog Devices Inc
Datasheet
1.AD664JNZ-BIP.pdf
(20 pages)
Specifications of AD664BD-BIP
Data Interface
Parallel
Rohs Status
RoHS non-compliant
Settling Time
8µs
Number Of Bits
12
Number Of Converters
4
Voltage Supply Source
Dual ±
Power Dissipation (max)
525mW
Operating Temperature
-40°C ~ 85°C
Mounting Type
Through Hole
Package / Case
28-CDIP (0.600", 15.24mm)
Resolution (bits)
12bit
Sampling Rate
125kSPS
Supply Voltage Range - Digital
4.5V To 5.5V
Supply Current
15mA
Digital Ic Case Style
DIP
No. Of Pins
28
Number Of Channels
4
Resolution
12b
Conversion Rate
125KSPS
Interface Type
Parallel
Single Supply Voltage (typ)
Not RequiredV
Dual Supply Voltage (typ)
±15V
Architecture
R-2R
Power Supply Requirement
Dual
Output Type
Voltage
Integral Nonlinearity Error
±0.75LSB
Single Supply Voltage (min)
Not RequiredV
Single Supply Voltage (max)
Not RequiredV
Dual Supply Voltage (min)
±11.4V
Dual Supply Voltage (max)
±16.5V
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Through Hole
Pin Count
28
Package Type
CDIP
Lead Free Status / Rohs Status
Not Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AD664BD-BIP
Manufacturer:
ADI
Quantity:
558
Part Number:
AD664BD-BIP
Manufacturer:
ADI/亚德诺
Quantity:
20 000
AD664
FUNCTIONAL DESCRIPTION
The AD664 combines four complete 12-bit voltage output D/A
converters with a fast, flexible digital input/output port on one
monolithic chip. It is available in two forms, a 44-pin version
shown in Figure 1a and a 28-pin version shown in Figure 1b.
44-Pin Versions
Each DAC offers flexibility, accuracy and good dynamic perfor-
mance. The R-2R structure is fabricated from thin-film resistors
which are laser-trimmed to achieve 1/2 LSB linearity and guar-
anteed monotonicity. The output amplifier combines the best
features of the bipolar and MOS devices to achieve good dy-
namic performance and low offset. Settling time is under 10 s
and each output can drive a 5 mA, 500 pF load. Short-circuit
protection allows indefinite shorts to V
The output and span resistor pins are available separately. This
feature allows a user to insert current-boosting elements to in-
crease the drive capability of the system, as well as to overcome
parasitics.
Digital circuitry is implemented in CMOS logic. The fast, low
power, digital interface allows the AD664 to be interfaced with
most microprocessors. Through this interface, the wide variety
of features on each chip may be accessed. For example, the in-
put data for each DAC is programmed by way of 4-, 8-, 12- or
16-bit words. The double-buffered input structure of this latch
allows all four DACs to be updated simultaneously. A readback
feature allows the internal registers to be read back through the
same digital port, as either 4-, 8- or 12-bit words. When dis-
abled, the readback drivers are placed in a high impedance
(tristate) mode. A TRANSPARENT mode allows the input data
to pass straight through both ranks of input registers and appear
at the DAC with a minimum of delay. One D/A may be placed
in the transparent mode at a time, or all four may be made
transparent at once. The MODE SELECT feature allows the
output range and mode of the DACs to be selected via the data
bus inputs. An internal mode select register stores the selec-
LL
, V
CC
, V
Figure 1a. 44-Pin Block Diagram
EE
and GND.
–4–
tions. This register may also be read back to check its contents.
A RESET-TO-ZERO feature allows all DACs to be reset to 0
volts out by strobing a single pin.
28-Pin Versions
The 28-pin versions are dedicated versions of the 44-pin
AD664. Each offers a reduced set of features from those offered
in the 44-pin version. This accommodates the reduced number
of package pins available. Data is written and read with 12-bit
words only. Output range and mode select functions are also
not available in 28-pin versions. As an alternative, users specify
either the UNI (unipolar, 0 to V
–V
ments. Finally, the transparent mode is not available on the
28-pin versions.
REF
to V
REF
) models depending on the application require-
Figure 1b. 28-Pin Block Diagram
REF
) models or the BIP (bipolar,
REV. C