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AD566A - Analog Devices - High Speed 12-Bit Monolithic D/A Converters

Номер произв AD566A
Описание High Speed 12-Bit Monolithic D/A Converters
Производители Analog Devices
логотип Analog Devices логотип 
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AD566A Даташит, Описание, Даташиты
a
High Speed 12-Bit
Monolithic D/A Converters
FEATURES
Single Chip Construction
Very High Speed Settling to 1/2 LSB
AD565A: 250 ns max
AD566A: 350 ns max
Full-Scale Switching Time: 30 ns
Guaranteed for Operation with ؎12 V (565A) Supplies,
with –12 V Supply (AD566A)
Linearity Guaranteed Overtemperature
1/2 LSB max (K, T Grades)
Monotonicity Guaranteed Overtemperature
Low Power: AD566A = 180 mW max;
AD565A = 225 mW max
Use with On-Board High Stability Reference (AD565A)
or with External Reference (AD566A)
Low Cost
MlL-STD-883-Compliant Versions Available
PRODUCT DESCRIPTION
The AD565A and AD566A are fast 12-bit digital-to-analog
converters that incorporate the latest advances in analog circuit
design to achieve high speeds at low cost.
The AD565A and AD566A use 12 precision, high speed bipolar
current-steering switches, a control amplifier, and a laser-trimmed
thin-film resistor network to produce a very fast, high accuracy
analog output current. The AD565A also includes a buried
Zener reference that features low noise, long-term stability, and
temperature drift characteristics comparable to the best discrete
reference diodes.
The combination of performance and flexibility in the AD565A and
AD566A has resulted from major innovations in circuit design,
an important new high speed bipolar process, and continuing
advances in laser-wafer-trimming techniques (LWT). The
AD565A and AD566A have a 10%–90% full-scale transition
time less than 35 ns and settle to within ±1/2 LSB in 250 ns max
(350 ns for AD566A). Both are laser-trimmed at the wafer level
to ± 1/8 LSB typical linearity and are specified to ± 1/4 LSB max
error (K and T grades) at +25°C. High speed and accuracy make
the AD565A and AD566A the ideal choice for high speed display
drivers as well as for fast analog-to-digital converters.
The laser trimming process that provides the excellent linearity
is also used to trim both the absolute value and the temperature
coefficient of the reference of the AD565A, resulting in a typical
full-scale gain TC of 10 ppm/°C. When tighter TC performance
is required or when a system reference is available, the AD566A
may be used with an external reference.
REV. F
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
AD566A
FUNCTIONAL BLOCK DIAGRAMS
REF OUT
VCC
BIPOLAR OFF
REF
IN
REF
GND
10V
19.95k
20k
AD565A
0.5mA
9.95k
IREF
DAC
IOUT =
4 ؋ IREF ؋ CODE
5k
5k
IO 8k
20V SPAN
10V SPAN
DAC OUT
CODE INPUT
–VEE
REF
IN
19.95k
REF
GND
20k
POWER MSB
GND
LSB
BIPOLAR OFF
AD566A
0.5mA
9.95k
IREF
DAC
IOUT =
4 ؋ IREF ؋ CODE
5k
5k
IO 8k
20V SPAN
10V SPAN
DAC OUT
CODE INPUT
–VEE
POWER MSB
GND
LSB
AD565A and AD566A are available in four performance
grades. The J and K grades are specified for use over the 0°C to
+70°C temperature range while the S and T grades are speci-
fied for the –55°C to +125°C range. The D grades are all pack-
aged in a 24-lead, hermetically sealed, ceramic, dual-in-line
package. The JR grade is packaged in a 28-lead plastic SOIC.
PRODUCT HIGHLIGHTS
1. The wide output compliance range of the AD565A and
AD566A are ideally suited for fast, low noise, accurate voltage
output configurations without an output amplifier.
2. The devices incorporate a newly developed, fully differential,
nonsaturating precision current switching cell structure that
combines the dc accuracy and stability first developed in the
AD562/AD563 with very fast switching times and an optimally
damped settling characteristic.
3. The devices also contain SiCr thin-film application resistors
that can be used with an external op amp to provide a preci-
sion voltage output or as input resistors for a successive-
approximation A/D converter. The resistors are matched to
the internal ladder network to guarantee a low gain temperature
coefficient and are laser-trimmed for minimum full-scale and
bipolar offset errors.
4. The AD565A and AD566A are available in versions compliant
with MIL-STD-883. Refer to the Analog Devices Military
Products Databook or current /883B data sheet for detailed
specifications.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2002
--------------------------------------------

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AD566A Даташит, Описание, Даташиты
AD565A–SPECIFICATIONS (TA = 25؇C, VCC = 15 V, VEE = 15 V, unless otherwise noted.)
Parameter
DATA INPUTS1 (Pins 13 to 24)
TTL or 5 V CMOS
Input Voltage
Bit ON Logic “1”
Bit OFF Logic “0”
Logic Current (Each Bit)
Bit ON Logic “1”
Bit OFF Logic “0”
RESOLUTION
OUTPUT
Current
Unipolar (All Bits On)
Bipolar (All Bits On or Off)
Resistance (Exclusive of Span Resistors)
Offset
Unipolar
Bipolar (Figure 3, R2 = 50 Ω Fixed)
Capacitance
Compliance Voltage
TMIN to TMAX
ACCURACY (Error Relative to
Full Scale) 25°C
TMIN to TMAX
DIFFERENTIAL NONLINEARITY
25°C
TMIN to TMAX
TEMPERATURE COEFFICIENTS
With Internal Reference
Unipolar Zero
Bipolar Zero
Gain (Full Scale)
Differential Nonlinearity
SETTLING TIME TO 1/2 LSB
All Bits ON-to-OFF or OFF-to-ON
FULL-SCALE TRANSITION
10% to 90% Delay plus Rise Time
90% to 10% Delay plus Fall Time
TEMPERATURE RANGE
Operating
Storage
POWER REQUIREMENTS
VCC, +11.4 to +16.5 V dc
VEE, –11.4 to –16.5 V dc
POWER SUPPLY GAIN SENSITIVITY2
VCC = +11.4 to +16.5 V dc
VEE = –11.4 to –16.5 V dc
PROGRAMMABLE OUTPUT RANGES
(See Figures 2, 3, 4)
EXTERNAL ADJUSTMENTS
Gain Error with Fixed 50 Ω
Resistor for R2 (Figure 2)
Bipolar Zero Error with Fixed
50 Ω Resistor for R1 (Figure 3)
Gain Adjustment Range (Figure 2)
Bipolar Zero Adjustment Range
REFERENCE INPUT
Input Impedance
REFERENCE OUTPUT
Voltage
Current (Available for External Loads)3
POWER DISSIPATION
AD565AJ
Min Typ Max
2.0 5.5
0.8
120 300
35 100
12
–1.6 –2.0 –2.4
؎0.8 ± 1.0 ؎1.2
6 8 10
0.01 0.05
0.05 0.15
25
–1.5 +10
± 1/4
(0.006)
± 1/2
(0.012)
؎1/2
(0.012)
؎3/4
(0.018)
± 1/2 ؎3/4
MONOTONICITY GUARANTEED
12
5 10
15 50
2
250 400
15 30
30 50
0 +70
–65 +150
35
–12 –18
3 10
15 25
0 to +5
–2.5 to +2.5
0 to +10
–5 to +5
–10 to +10
± 0.25
± 0.15
15
9.90
1.5
± 0.1
± 0.05
20
10.00
2.5
225
؎0.25
؎0.15
25
10.10
345
AD565AK
Min Typ Max
2.0 5.5
0.8
120 300
35 100
12
–1.6
؎0.8
6
–1.5
–2.0 –2.4
± 1.0 ؎1.2
8 10
0.01 0.05
0.05 0.1
25
+10
± 1/8
(0.003)
± 1/4
(0.006)
؎0.35
(0.0084)
؎1/2
(0.012)
± 1/4 ؎1/2
MONOTONICITY GUARANTEED
12
5 10
10 20
2
250 400
15 30
30 50
0 +70
–65 +150
35
–12 –18
3 10
15 25
0 to +5
–2.5 to +2.5
0 to +10
–5 to +5
–10 to +10
± 0.25
± 0.15
15
9.90
1.5
± 0.1
± 0.05
؎0.25
± 0.1
20
10.00
2.5
225
25
10.10
345
Unit
V
V
μA
μA
Bits
mA
mA
kΩ
% of F.S. Range
% of F.S. Range
pF
V
LSB
% of F.S. Range
LSB
% of F.S. Range
LSB
ppm/°C
ppm/°C
ppm/°C
ppm/°C
ns
ns
ns
°C
°C
mA
mA
ppm of F.S./%
ppm of F.S./%
V
V
V
V
V
% of F.S. Range
% of F.S. Range
% of F.S. Range
% of F.S. Range
kΩ
V
mA
mW
NOTES
1The digital inputs are guaranteed but not tested over the operating temperature range.
2The power supply gain sensitivity is tested in reference to a VCC, VEE of ± 15 V dc.
3For operation at elevated temperatures, the reference cannot supply current for external loads. It, therefore, should be buffered if additional loads are to be supplied.
Specifications subject to change without notice.
–2– REV. F
--------------------------------------------

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AD566A Даташит, Описание, Даташиты
AD566A
Parameter
DATA INPUTS1 (Pins 13 to 24)
TTL or 5 V CMOS
Input Voltage
Bit ON Logic “1”
Bit OFF Logic “0”
Logic Current (Each Bit)
Bit ON Logic “1”
Bit OFF Logic “0”
RESOLUTION
OUTPUT
Current
Unipolar (All Bits On)
Bipolar (All Bits On or Off)
Resistance (Exclusive of Span Resistors)
Offset
Unipolar
Bipolar (Figure 3, R2 = 50 Ω Fixed)
Capacitance
Compliance Voltage
TMIN to TMAX
ACCURACY (Error Relative to
Full Scale) 25°C
TMIN to TMAX
DIFFERENTIAL NONLINEARITY
25°C
TMIN to TMAX
TEMPERATURE COEFFICIENTS
With Internal Reference
Unipolar Zero
Bipolar Zero
Gain (Full Scale)
Differential Nonlinearity
SETTLING TIME TO 1/2 LSB
All Bits ON-to-OFF or OFF-to-ON
FULL-SCALE TRANSITION
10% to 90% Delay plus Rise Time
90% to 10% Delay plus Fall Time
TEMPERATURE RANGE
Operating
Storage
POWER REQUIREMENTS
VCC, +11.4 to +16.5 V dc
VEE, –11.4 to –16.5 V dc
POWER SUPPLY GAIN SENSITIVITY2
VCC = +11.4 to +16.5 V dc
VEE = –11.4 to –16.5 V dc
PROGRAMMABLE OUTPUT RANGES
(See Figures 2, 3, 4)
EXTERNAL ADJUSTMENTS
Gain Error with Fixed 50 Ω
Resistor for R2 (Figure 2)
Bipolar Zero Error with Fixed
50 Ω Resistor for R1 (Figure 3)
Gain Adjustment Range (Figure 2)
Bipolar Zero Adjustment Range
REFERENCE INPUT
Input Impedance
REFERENCE OUTPUT
Voltage
Current (Available for External Loads)3
POWER DISSIPATION
AD565AS
Min Typ
Max
AD565AT
Min Typ
Max
Unit
2.0
120
35
5.5
0.8
300
100
12
2.0 5.5
0.8
120 300
35 100
12
V
V
μA
μA
Bits
–1.6
؎0.8
6
–1.5
–2.0
± 1.0
8
0.01
0.05
25
–2.4
؎1.2
10
0.05
0.15
+10
–1.6
؎0.8
6
–1.5
–2.0
± 1.0
8
0.01
0.05
25
–2.4
؎1.2
10
0.05
0.1
+10
± 1/4
(0.006)
± 1/2
(0.012)
؎1/2
(0.012)
؎3/4
(0.018)
± 1/8
(0.003)
± 1/4
(0.006)
؎0.35
(0.0084)
؎1/2
(0.012)
± 1/2 ؎3/4
± 1/4 ؎1/2
MONOTONICITY GUARANTEED MONOTONICITY GUARANTEED
mA
mA
kΩ
% of F.S. Range
% of F.S. Range
pF
V
LSB
% of F.S. Range
LSB
% of F.S. Range
LSB
12
5 10
15 30
2
250 400
15 30
30 50
–55 +125
–65 +150
35
–12 –18
3 10
15 25
0 to +5
–2.5 to +2.5
0 to +10
–5 to +5
–10 to +10
12
5 10
10 15
2
250 400
15 30
30 50
–55 +125
–65 +150
35
–12 –18
3 10
15 25
0 to +5
–2.5 to +2.5
0 to +10
–5 to +5
–10 to +10
ppm/°C
ppm/°C
ppm/°C
ppm/°C
ns
ns
ns
°C
°C
mA
mA
ppm of F.S./%
ppm of F.S./%
V
V
V
V
V
± 0.25
± 0.15
15
9.90
1.5
± 0.1
± 0.05
20
10.00
2.5
225
؎0.25
؎0.15
25
10.10
345
± 0.25
± 0.15
15
9.90
1.5
± 0.1
± 0.05
20
10.00
2.5
225
؎0.25
؎0.1
25
10.10
345
% of F.S. Range
% of F.S. Range
% of F.S. Range
% of F.S. Range
kΩ
V
mA
mW
Specifications shown in boldface are tested on all production units at final electrical test. Results from those tests are used to calculate outgoing quality levels. All min
and max specifications are guaranteed, although only those shown in boldface are tested on all production units.
Specification subject to change without notice.
REV. F
–3–
--------------------------------------------





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