AD664JN-BIP Analog Devices Inc, AD664JN-BIP Datasheet - Page 13

• Manufacturer Part Number: AD664JN-BIP
• Description: D/A Converter (D-A) IC
• Manufacturer: Analog Devices Inc

Specifications of AD664JN-BIP

• Supply Voltage: 15V
• No. Of Bits: 12 Bit
• Mounting Type: Through Hole
• Interface Type: Parallel
• Package / Case: 28-DIP
• Rohs Status: RoHS non-compliant
• Settling Time: 8µs
• Number Of Bits: 12
• Data Interface: Parallel
• Number Of Converters: 4
• Voltage Supply Source: Dual ±
• Power Dissipation (max): 525mW
• Operating Temperature: 0°C ~ 70°C
• Number Of Channels: 4
• Resolution: 12b
• Conversion Rate: 125KSPS
• Single Supply Voltage (typ): Not RequiredV
• Dual Supply Voltage (typ): ±15V
• Architecture: R-2R
• Power Supply Requirement: Dual
• Output Type: Voltage
• 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: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Through Hole
• Pin Count: 28
• Lead Free Status / Rohs Status: Not Compliant

AD664
Expansion of the scheme employed in Figure 25a results in that
shown in Figure 25c. Here, two AD664s are connected to an
MC6801, providing a total of eight 12-bit, software program-
mable DACs. Again, the three least significant bits of address
are used to select the on-chip registers of the AD664. IOS and
E, as well as a fourth address bit, are decoded to provide the
appropriate CS signals. Four address and five I/O lines remain
uncommitted.
A slightly more sophisticated approach to system expansion is
illustrated in Figure 25d. Here, a 74LS138 (1-of-8 decoder) is
used to address one of the eight AD664s connected to the
MC6801. The three least significant address bits are used to
select on-chip register and DAC. The next three address bits are
used to select the appropriate AD664. IOS and E gate the
74LS138 output.
Figure 25a. Simple AD664 to MC6801 Interface
Figure 25b. Alternate AD664 to MC6801 Interface
Figure 25c. Interfacing Two AD664s to an MC6801
REV. C
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