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DAC8229FP-DAC8229FS
Dual 8-Bit CMOS D/A Converter with Voltage Output
ANALOG
DEVICES
Dual 8-Bit CMOS
MI Converter with Voltage Output
DACBZZQ
FEATURES
Two 8-Bit DACs In A Single Chip
Adjustment-Free Internal CMOS Amplifiers
Single or Dual Supply Operation
TTL Compatible Over Full VDD Range
5 Microsecond Settling Time
Fast Interface Timing ........................................ twn = 50ns
Improved Resistance to ESD
Fits AD/PM-7528 And AD/PM-7628 Sockets
Available In Small Outline Package
-4ty'C to +85°C for the Extended Industrial Temperature
0 Available In Die Form
APPLICATIONS
Automatic Test Equipment
Process/lndustrial Controls
Energy Controls
Programmable instrumentation
Disk Drive Systems
Multi-Channel Microprocessor-Controlled Systems
GENERAL DESCRIPTION
The DAC-8229 is a dual B-bit, voltage output, multiplying CMOS
D/A converter. Its reference input accepts a At.5V signal, in-
verts and delivers it to the output with an internal amplifier. It can
also accept-ION/ atVREF with a corresponding +10V output (the
maximum positive input signal that it can accept is +2.5V).
The DAC-8229 was designed to operate with dual supplies;
however, it can be operated with a single supply by connecting
Continued
FUNCTIONAL DIAGRAM Von
DAC-8229
DB7 INPUT
DB, BUF E
--- tFS “£3273
DAC AIDAC a
REV. A DGND
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
ORDERING INFORMATION'
PACKAGE: 20-PIN DlP/SOL
EXTENDED"
MILITARY' mousmiAL
RELATIVE GAIN TEMPERATURE TEMPERATURE
ACCURACY ERROR -55°c to +125°c 40°C to 435°C
sl/2LSB "LSB DAC8229AR DAC8229ER
:1/2LSB :ZLSB __ DAC8229FP
z1/2LSB :ZLSB - DAC8229FS
* For devices processed in total compliance to M I L-STD-883, add /883 after part
number. Consult factory for 883 data sheet.
t All commercial and industrial temperature range parts are available with burn-
tt Cerdip and epoxy packaged devices available in the extended industrial tem.
perature range.
PIN CONNECTIONS
AI2ND A _s:
Vss [I 20-PIN
vourA u 0.3"CERDIP
VazsA u (R-Suffix)
DGND s
WW: B u 20-PIN SpL
(MSB) DB, (S-Suffix)
DB, 20-PIN EPOXY DIP
DBs (P-Suffix)
AGND A
AGND B
VREF B
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, USA.
Tet: 617/329-4700 Fax: 617/326-8703 Twx: 710/394-6577
Telex: 924491 Cable: ANALOG NORWOODMASS
DACBZZQ
GENERAL DESCRIPTION Continued
VSS, AGND A, and AGND B to ground. Its operating character-
istics will then be similarto that ofthe DAC-8228 (whose pin-out
allows it to drop into the AD/PM-7528 and AD/PM-7628 sock-
An internal regulator provides TTL logic compatibility and fast
microprocessor Interface timing over the full VDD range. Also,
each DAC input latch is addressable for easy microprocessor
interfacing.
The DAC-8229 dissipates less than 109mW in the space-saving
20-pin 0.3" DIP or the 20-lead SO surface-mount package. Its
compact size, low power, and economical cost per channel,
make it attractive for applications requiring multiple D/A convert-
ers without sacrificing circuit-board space. Reduced parts
count also improves system reliability.
PMI's advanced oxide-isolated, silicon-gate CMOS process,
coupled with PMl's highly-stable thin-film R-2R resistor ladder,
offers superior matching and temperature tracking between
The DAC-8229 offers cerdip or epoxy packaged devices in the
extended industrial temperature range of-alot to +85°C.
ELECTRICAL CHARACTERISTICS at VDD = +11.4v or +15.75v; Vss = -5V s10%; Va
ABSOLUTE MAXIMUM RATINGS (TA = +25°C, unless oth-
erwise noted.)
V0010 AGND or DGND ............................................ -0.3V, +17
Wssto AGND or DGND ............................................. -7V, VDD
v, to VSS ....................... ...... .-0.3V, +24V
AGND to DGND ........................................................ MMV, v00
Digital Input Voltage to GND .................................... -0.3V, V0 D
VREF to AGND .............................. --17V, +4V
Vourto AGND (Note 1) ................................................ VSS, VDD
Operating Temperature Range
DAC-8229AR Version ................................ -55''C to +125''C
DAC-8229ER/FP/FS Versions ..................... -4ty'C to +85''C
Junction Temperature B.................................................. +150°C
Storage Temperature ..................................... --65''C to +150°C
Lead Temperature (Soldering, 60 sec) ......................... +300°C
PACKAGE TYPE 81A (NOTE 3) N, UNITS
20-Pin Hermetic DIP (R) 76 11 'CIW
20-Pin Plastic DIP (P) 69 27 mm
20-Pin SOL (S) 88 25 "C/IN
NOTES:
1. Outputs may be shorted to any terminal provided the package power dissipa-
tion is not exceeded. Typical output short-circuit current to AGND ia SOmA.
2. Use proper antistatic handling procedures when handling these devices.
3. e A is specified for worst case mounting conditions. ie., e A is spsoTod for
device in socket for CerDIP and P-DIP packages; 0A is specified for device
soldered to printed circuit board for SOL package.
EF = A.5V; AGND = ov; T, = Full Tem-
perature Range specified under Absolute Maximum Ratings, unless otherwise noted.
DAC-8229
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
STATIC ACCURACY
(Nate 1)
Resolution N 8 - - Bus
Relativé Accuracy _
INL - - 1 LSB
(Note AIO) t [2
Differential Nonlinearity DNL - - 11 LSB
(Note 3, 10)
Gain Error
- - At LSB
(Note 10) GFSE
Gain Error
Temperature Coefficient TCGFS - 20.0008 :0002 %/°C
(Note 4, 10)
Zero Gain Error
V - - 10 mV
(Note 10) ZSE 2
Zero Code Error
Temperature Cmymcitynt TCVzs - " - uV/°C
(Note 4, 1 0)
REFERENCE INPUT
(Note 8)
Input Resistance R 7 _ 15 kn
(Note 5) IN
Input Resistance Match Irhs _ Ahl tl %
(VREFNVREFB) RIN
Input Capacitance
(Note 4) cm 9 20 p
REV. A
ELECTRICAL CHARACTERISTICS at VDD = +11.4V or +15.75V; VSS = -5V :10%; VREF = s2.5V; AGND = 0V; TA = Full Tem-
perature Range specified under Absolute Maximum Ratings, unless otherwise noted. Continued
DAC-8229
PARAMETER SYMBOL CONDITIONS TYP UNITS
DIGITAL INPUTS
Digital Input High Vor, 2.4 - -
Digital Input Low V| N L - - 0.8 V
Input Current II N 1% = 0V or Vor, - - tl M
Input Capacitance
(Note 4) q N - 4 8 pF
POWER SUPPLIES
Positive Supply Current
(Note 6) ID D - - 6 mA
Negative Supply Current
(Note 6) ls S - - 5 mA
DC Power Supply
Rejection Ratio PSRR AVDD = 25% - - 0.01 %/%
(A Gain/AVD o) (Note 10)
DYNAMIC PERFORMANCE
T = 25°C
Slew Rate (VOW) A
(Note 4) SR VR EF - -2.5V - 2.5 - V/us
Digital Inputs = ON/to MN
Settling Time Nous)
V = -2.5V
Positive or Nsrgativo ts BEEF _ 2 5 “5
(Notes 4,7) Digita Inputs 0 to +5V
ChanneI-toChannel CCI VR EFBto Vou1A orVREFA to VOUTB - -80 _ dB
Isolation (Note 4) vs, EF:B = VREFA = 20V” @f=10kHz
. , I . '
Digita Crosstalk Q For Code Transition _ 4 10 nVs
(Notes 4, 9) 0000 0000 to 1111 1111
AC Feedthrough F T A = 25'' C - - -ro dB
(Notes 4, 11) T TA = Full Temp. Range - - -65
SWITCHING CHARACTERISTICS (Note 4)
Chip Select to
- - ns
Write Set-Up Time tss 60
Chip Select to
Write Hold Time tc H 10 - - ns
DAC Select to
- - ns
Write Set-Up Time tss 60
DAC Select to t 10 - - ns
Write Hold Time AH
Data Valid to
Write Set-Up Time tos 60 - - ns
Data Valid to t 10 ns
Write Hold Time DH
Write Pulse Width tw R 50 A - ns
NOTES: 8. v,, EF voltage range ls +3Vto -10V; the absolute maximum negative value is:
1. Specimations apply to both DAC A and DAC B. IVREFI = Von -AN,
2. This is an endpoint linearity specification. 9. Digital crosstalk is a measure of the amount of digital input pulse appearing at the
3. All devices areguaranteedlo btsmonotonisoverthefulloperatingtemperaturerange. analog output of the unselecled DAC while applying it to the digital inputs of the
4. These characteristics are for design guidance only and are not subject to production other DAC.
last. 10. VREF = +2.5V, RPULLDOWN = 20m (a pulldown resistorto Vss is used for these
5. Input resistance temperature CaeffrciBrtt = +300 ppmPC. tests). _
6. VIN = VINL or VINH; outputs unloaded. 11. VHEFA' VHEFB = 20V . Sinewave @f=10kHz;
7. VREF= s2.5V; to where output semesto s1/2 LSB. VREFAto VHEFB or VREFB to VHEFA.
REV. A -3-
DACBZZQ
DICE CHARACTERISTICS
1. ANALOG GROUND (AGND A) 11. DIGITAL INPUT DB,
2. NEGATIVE POWER SUPPLY (V55) 12. DIGITAL INPUT 082
3. VOLTAGE OUTPUT (VOUTA) 13, DIGITAL INPUT DB,
4. DAC A REFERENCE INPUT (VREF N 14. DIGITAL INF‘UTgBo (LSB)
5. DIGITAL GROUND (DGND) 15. CHIP SELECT (CS)
6. DIGITAL SELECTION (DAC A/DAC B) 16. WRITE (WR) V
7. DIGITAL INPUT DB, (M88) 17. POSITIVE POWER SUPPLY (V00)
8. DIGITAL INPUT DB6 18. DAC B REFERENCE INPUT (VREF B)
9. DIGITAL INPUT 085 19. VOLTAGE OUTPUT (VOUT B)
10. DIGITAL INPUT DB, 20. ANALOG GROUND (AGND B)
Substrate (die backside) Is Internally connected to VDD.
DIE SIZE 0082 x 0.111 inch, 9,102 sq. mils
(2.08 x 2.82 mm, 5.87 sq. mm)
WAFER TEST LIMITS at Vor, = +11.4v or +15.75v; Vss = -5V 110%;vREF = s2.5V; AGND = OV; T, = +25°c.
DAC-8229GBC
PARAMETER SYMBOL CONDITIONS LIMIT UNITS
Relative Accuracy INL E . L1 . LSB MAX
(Note 3) ndpomt nearity Error 11/2
Differential Nonlinearity
L B MAX
(Noies I, 3) DNL el S
Gain Error
(Note 3) GFSE DAC Latches Loaded with 1111 11 11 " LSB
Zero Code Error
V 1 mV MAX
(Note a) 255 t 0
Input Resistance RIN Pad 4and 18 7/15 kg MINlkQ MAX
VREFANREFalnpm AH N 1 %MAX
Resistance Match Rm
Digital Input
_ V Mt
High VIH 2 4 N
Di . I I
igita nput v 0.8 V MAX
Low IL
Input Current IIN VIN = 0V or VDD sl WA MAX
DC Supply Rejection
(AGain/AVDD) PSRH VDD = 25% 0.01 %/% MAX
(Note 3)
Positive Supply Current l 6 m A M AX
(Note 2) D D
Negative Supply Current I 5 m A M AX
(Note 2) ss
NOTES:
1. All dice guaranteed monotonic over the full operating temperatum range.
2. VIN = VINL or VINH; output unloaded.
3. VREF = +2.5V, RPULLDOWN = 20kn (a pulldown resistor to VSS is used for these tests).
Electrical tests are performed at water probe to the limits shown. Due to variations In assembly methods and normal yield loss, yield after packaging is not guaranteed for
standard product dice. Consult factory to negotiate specifications based on dice lot qualifications through sample lot assembly and testing.
-4- REV. A
DACBZZS
TYPICAL PERFORMANCE CHARACTERTISTICS
DAC A-TO-DAC B MATCHING
(DACs A & B ARE
SUPERIMPOSED)
TA = .25°c
tfoo = o15Y
Vss = -w
VREF = -l
RELATIVE ACCURACY (L53)
0 32 64 96 128 160
DIGITAL INPUT CODE (DECIMAL)
RELATIVE ACCURACY
VS REFERENCE VOLTAGE
MAXJIIAUM TIA- +25%:
M Posmvs ' MN -
ERROR vss = AN
A " AGND = (W
bl. 0.4 Rpuuotswts--" -
i " N,
, o ---..
y -0.2 --
T, \ r"""'"
a HM V
MAXIMUM
-0.8 253313“
4 -2 -1 ti 1 2 3
REFERENCE VOLTAGE - Ihsr (VOLTS)
FULL-SCALE GAIN ERROR
VS TEMPERATURE
Von: MS
0,35 vss = -5.5V
VREF = +2.5V
a 0.30
g 0.25
5- 0.20
Q this
g' 0.10
-75 -50 -25 0 25 50 " 100 125
TEMPERATURE (NO
REV. A
192 224 256
RELATIVE ACCURACY (L55) RELATIVE ACCURACY (LSB)
ZERO CODE ERROR (InV)
RELATIVE ACCURACY (DAC A)
vs CODE AT TA = -65''C, +25°C,
+125°C (SUPERIMPOSED)
ihq 12;»: If,','
oa her-- +2.5V
" 32 64 96 I28 160 192 224 256
DIGITAL INPUT CODE (DECIMAL)
RELATIVE ACCURACY
vs REFERENCE VOLTAGE
l MAXIMUM
" POSmVE
" ERROR
0 (-- _----
-o.2 _
MAXIMUM
-04 NEGATIVE
TA: r25'C ERROR
.05 _ VDD = .sv
Iggy,',
-4M b RPULL-DOWN = 21112
-1.0 l j
-3 -2 -1 tr 1 2 3
REFERENCE VOLTAGE - her (vous)
ZERO CODE ERROR
VS TEMPERATURE
van: +15v
1.75 v55 = -5.W
YREF = r2.5il
-rs -60 -25 0 25 so 75 tot) 125
TEMPERATURE CC)
DIFFERENTIAL NON LINEARITY
" VHEF
TA “25°C
vDD = nsv -
Ilss = -w
DIFFERENTIAL NONLINEARITV (LSB)
"l,, -10 .0 " " " 0 2 a
VREFWOLTS)
SUPPLY CURRENT VS
DIGITAL INPUT VOLTAGE
V” = .15v
vss = AN
TA = .2s-c
Va“: -2.w
Va“: o2.5V
supva CURRENT — 10,, (mA)
0 5 " "
DIGITAL INPUT VOLTAGE - VIN (VOLTS)
POWER SUPPLY REJECTION
vs TEMPERATURE
POWER SUPPLY REJECHON (W)
v“: nsv
v55 = -w
-75 -50 -25 il 25 50 75 100 125
TEMPERATURE CG)
