Advanced Linear Devices Inc ALD1801DC, ALD1801BSC, ALD1801BPC, ALD1801BDC, ALD1801ASC Datasheet
...
ADVANCED
LINEAR
DEVICES, INC.
ALD1801A/ALD1801B
ALD1801
8 BIT MICROPOWER MULTIPLYING D/A CONVERTER
GENERAL DESCRIPTION
The ALD1801 is an 8-bit monolithic current output digital to analog
converter designed to provide low power, low operating voltage and simple
operation. It offers industry pin configuration of DAC-08 types, and is
intended for a wide range of digital to analog conversion and control
applications in +5V single power supply and ±5V dual power supply
systems, as well as +3V to +12V battery operated systems. Device
characteristics are specified for +5V single supply and 3.3V dual supply
systems.
The ALD1801 is manufactured with Advanced Linear Devices’ enhanced
ACMOS silicon gate CMOS process and has been designed to be also
used as a linear cell element in Advanced Linear Devices’ "FunctionSpecific" ASIC, as it is fully compatible in design, operation, and manufacture
with all other linear elements in Advanced Linear Devices’ product family.
The ALD1801 is designed with matching between reference and full scale
currents. Digital inputs are standard CMOS logic inputs to provide ease
of interface. Output currents can be directly converted to a voltage output
by using a pair of resistors. When used with ALD’s rail-to-rail output
operational amplifiers such as the ALD1702, full scale output of 0 to +5V
can be easily achieved with single +5V power supply.
ORDERING INFORMATION
Operating Temperature Range
-55°C to +125°C0°C to +70°C0°C to +70°C
16-Pin 16-Pin 16-Pin
CERDIP Small Outline Plastic Dip
Package Package(SOIC) Package
ALD1801A DC ALD1801A SC ALD1801A PC
ALD1801B DC ALD1801B SC ALD1801B PC
ALD1801 DC ALD1801 SC ALD1801 PC
FEATURES
• Low voltage 3V to 12V operation
• Low power 1.8mW max @ 3.3V
• Single supply operation (5V or 3.3V)
• Direct CMOS logic interface
• Complementary current outputs
• Nonlinearity to 0.1% max over
temperature range
• High input impedance
• Low full scale current
• High output impedance
PIN CONFIGURATION
1
N/C N/C
I OUT
MSB B
2
-
V
3
I
4
OUT
5
1
6
B
2
B
7
3
8
B
4
TOP VIEW
DC, PC, SC PACKAGE
* N/C Pin is connected internally. Do not connect externally.
16
15
14
13
12
11
10
9
V
REF-
V
REF+
+
V
B8 LSB
B
7
B
6
B
5
* Contact factory for industrial temperature range
BLOCK DIAGRAM
IOUT
4
2
V
REF+
14
V
REF-
15
© 1998 Advanced Linear Devices, Inc. 415 T asman Drive, Sunnyvale, California 94089 -1706 Tel: (408) 747-1155 Fax: (408) 747-1286 http://www .aldinc.com
V+
13
I
B1
3
5
B
1
MSB
I
B2
6
B
2
I
B3
7
B
3
I
B4
8
B
4
I
B5
9
B
5
I
B6
10
B
6
I
B7
11
B
7
12
B
8
LSB
IOUT
I
B8
OPERATING ELECTRICAL CHARACTERISTICS
= 25°C VS = ±2.5V or VS = +5.0V unless otherwise specifie
T
A
1801A 1801B 1801
Parameter Symbol Min Typ Max Min Typ Max Min Typ Max Unit Test Conditions
Supply V
Voltage Single Supply
S
Resolution 8 8 8 Bits
Monotonicity 8 8 8 Bits
±1.5 ±6.0 ±1.5 ±6.0 ±1.5 ±6.0 V Dual Supply
Nonlinearity N
Settling Time t
Propagation t
Delay 1.5 2.5 1.5 2.5 1.5 2.5 µs All Bits
Full Scale T
Tempco
Output V
Compliance +1.5 +0.2 +1.5 +0.2 +1.5 +0.2
L
S
d
C
-
OC
V
±0.1 ±0.19 ±0.39 % of
Full Scale
2.5 5.0 2.5 5.0 2.5 5.0 µs To 1/2 LSB with all bits
turned on/off
1.5 2.5 1.5 2.5 1.5 2.5 µs Each Bit
±10 ±50 ±10 ±50 ±10 ±50 ppm/°C
V+V
-
V+V
-
V+V
Output 50 50 50 MΩ Output Within
Impedance Compliance limits
Full Scale I
Current Range V
Full Scale I
Symmetry
Zero Scale I
Current
Logic Input Level
Logic "0" V
Logic "1" V
FS
FSS
ZS
1
IL
IH
100 100 100 µAR
±2.5 ±2.5 ±2.5 µA
10 10 10 nA
-1.1 -1.1 -1.1 V Supply = ±2.5V
2.1 2.1 2.1
OUT
REF
= R
OUT
= 2.5V; R
Logic Swing
Logic Threshold V
Range -1.5 1.5 -1.5 1.5 -1.5 1.5 V Supply = ±2.5V
LS
-2.8 2.8 -2.8 2.8 -2.8 2.8 V Supply = ±2.5V
= 50KΩ
=25KΩ
REF
Reference Bias I
Current
Power Supply +I
Current - I
Power Dissipation P
RB
S
S
D
0.1 0.1 0.1 nA
500 800 500 800 500 800 µA Full Scale
700 1000 700 1000 700 1000 Output = 100µA
4.5 4.5 4.5 mW Supply = ±2.5V
Compensation Not Required
Notes: 1. Contact ALD for ±1.0V/±1.25V operation
2. Logic levels of V
0.4V and VIH 4.6V for single supply applications.
IL
ALD1801A/ALD1801B Advanced Linear Devices 2
ALD1801
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