Datasheet AD75004 Datasheet (Analog Devices)

Page 1
VOLTAGE
REFERENCE
TTL
INPUTS
8-BIT
BUS
LATCHES
DAC
LATCHES
+5V
D7 D6 D5
D4 D3 D2 D1 D0
CONTROL LOGIC
TTL INPUTS
A3 A2 A1 A0
2.22k
+12V
10k
V
REFOUT
V
REFIN
CS WR
V
OUT3
V
OUT2
V
OUT1
V
OUT0
V
DD
V
SS
AGND DGND
8 + 4-BIT
LATCHES
8 + 4-BIT
LATCHES
8 + 4-BIT
LATCHES
8 + 4-BIT
LATCHES
12-BIT
LATCH
–12V
12-BIT
DAC
12-BIT
DAC
12-BIT
DAC
12-BIT
DAC
12-BIT LATCH
12-BIT LATCH
12-BIT LATCH
10k
10k
10k
AD75004
Quad 12-Bit
a
FEATURES 4 Complete 12-Bit D/A Functions Double-Buffered Latches Simultaneous Update of All DACs Possible 65 V Output Range High Stability Bandgap Reference Monolithic BiMOS Construction Guaranteed Monotonic over Temperature 3/4 LSB Linearity Guaranteed over Temperature 4 ms max Settling Time to 0.01% Operates with 612 V Supplies Low Power: 720 mW max Including Reference TTL/5 V CMOS Compatible Logic Inputs 8-Bit Microprocessor Interface 24-Pin PDIP or 28-Lead PLCC Package

PRODUCT DESCRIPTION

The AD75004 contains four complete, voltage output, 12-bit digital-to-analog converters, a high stability bandgap reference, and double-buffered input latches on a single chip. The convert­ers use 12 precision high speed bipolar current steering switches and laser-trimmed thin-film resistor networks to provide fast settling time and high accuracy.
Microprocessor compatibility is achieved by the on-chip double-buffered latches. The design of the input latches allows direct interface to 8-bit buses. The 12 bits of data from the first rank of latches can then be transferred to the second rank, avoiding generation of spurious analog output values. The latch responds to strobe pulses as short as 50 ns, allowing use with fast microprocessors.
The functional completeness and high performance of the AD75004 results from a combination of advanced switch de­sign, the BiMOS II fabrication process, and proven laser trim­ming technology. BiMOS II is an epitaxial BiCMOS process optimized for analog and converter functions. The AD75004 is trimmed at the wafer level and is specified to ± 1/2 LSB maxi­mum linearity error at 25°C and ±3/4 LSB over the full operat­ing temperature range. The on-chip output amplifiers provide an output range of ±5 V, with 1 LSB equal to 2.44 mV.
REV. A
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.
D/A Converter
AD75004

FUNCTIONAL BLOCK DIAGRAM

The bandgap reference on the chip has low noise, long term stability and temperature drift characteristics comparable to discrete reference diodes. The absolute value of the reference is laser trimmed to +5.00 V with 0.6% maximum error. Its tem­perature coefficient is also laser trimmed.
Typical full-scale gain TC is 15 ppm/°C. With guaranteed monotonicity over the full temperature range, the AD75004 is well suited for wide temperature range performance.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 617/329-4700 Fax: 617/326-8703
Page 2
AD75004–SPECIFICA TIONS
(TA = +258C, 612.0 V power supplies unless otherwise noted)
Parameter Symbol Min Typ Max Units
DIGITAL INPUTS (D0–D7, A0–A3, CS, WR)
Logic Levels (TTL Compatible)
Input Voltage, Logic “1” V Input Voltage, Logic “0” V Input Current, V Input Current, V
= 5.5 V I
IH
= 0.8 V I
IL
Input Capacitance C
IH
IL IH IL
IN
2.0 5.5 V 0 0.8 V
10 µA 10 µA
10 pF
ACCURACY
Resolution 12 Bits Integral Linearity Error ±1/4 61/2 LSB
Integral Linearity Error, T
MIN
to T
MAX
±1/2 ±3/4 LSB
Differential Linearity Error ±1/2 63/4 LSB
Differential Linearity Error, T
Gain (Full-Scale) Error
Gain Error Drift, T
Bipolar Zero Error
1
to T
MIN
1
Bipolar Zero Error Drift, T
MAX
MIN
MIN
1
to T
to T
MAX
MAX
1
Guaranteed Monotonic
±2 610 LSB ±15 ±30 ppm/°C ±1 62 LSB ±3 ±7 ppm/°C
CHANNEL-TO-CHANNEL MISMATCH
Integral Linearity Error ±1/2 61 LSB Gain Error Bipolar Zero Error
1
1
±1 64 LSB ±1 62 LSB
DYNAMIC PERFORMANCE
Settling Time to ±0.01% of FSR
for FSR Change, 2 k || 500 pF Load 2 4 µs Slew Rate, 2 k || 500 pF Load 5 V/µs Digital Input Crosstalk (Static)
2
–50 dB
ANALOG OUTPUTS
Full-Scale Range (FSR) V Output Current I
OUT
OUT
±5mA
±5V
Short Circuit Limit Current 640 mA
VOLTAGE REFERENCE
Reference Output Voltage V Temperature Coefficient ±15 ± 25 ppm/°C Reference Output Currents
3
Reference Input Voltage V Reference Input Current @ 5.0 V I
POWER SUPPLY GAIN SENSITIVITY
Gain/V
, VDD = +10.8 to +13.2 V dc
DD
Gain/VSS, VSS = –10.8 to –13.2 V dc
1
1
REFOUT
REFIN
REFIN
4.97 5.00 5.03 V
3.0 5.0 mA
4.5 5.0 5.5 V
3.0 mA
±15 625 ppm of FSR/% ±15 625 ppm of FSR/%
POWER SUPPLY REQUIREMENTS
Voltage Range V Supply Currents IDD, I
DD
, V
SS
SS
610.8 ±12 613.2 V ±25 630 mA
TEMPERATURE RANGE
Specification T
MIN
, T
MAX
0 +70 °C
Storage –65 +150 °C
NOTES
1
Gain and bipolar zero errors are measured using internal voltage reference and include its errors.
2
Digital crosstalk is defined as the change in any one output’s steady state value as a result of any other output being driven from V 2 k || 500 pF load by means of varying the digital input code.
3
The internal voltage reference is intended to drive on-chip only; buffer it if using it externally.
4
All minimum and maximum specifications are guaranteed, and 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.
Specifications subject to change without notice.
OUTMIN
to V
OUTMAX
into a
–2–
REV. A
Page 3
AD75004
WARNING!
ESD SENSITIVE DEVICE

TIMING CHARACTERISTICS

1
(TA = +258C, 612.0 V power supplies unless otherwise noted)
Parameter Symbol Min Units
Address Setup Time t Address Hold Time t Data Setup Time t Data Hold Time t Chip Select to Write Setup Time t Write to Chip Select Hold Time t Write Pulse Width t
NOTES
1
Timing measurement reference level is 1.5 V.
Specifications subject to change without notice
ADDRESS INPUTS
(A0–A3)
DATA INPUTS
(D0–D7)
CHIP SELECT
(CS)
WRITE
(WR)
t
1
1 2 3 4 5 6 7
t
5
t
t
7
t
2
t
3
4
30 ns 10 ns 10 ns 45 ns 0ns 0ns 50 ns
t
6
ABSOLUTE MAXIMUM RATINGS*
(TA = +25°C unless otherwise noted)
Min Max Units Conditions

TRUTH TABLE

Control and Address Lines CS WR A3 A2 A1 A0 Operation
1 X X X X X No operation X 1 X X X X No operation 0 0 0 0 A1* A0* 8 LSBs one input latch 0 0 0 1 A1* A0* 4 MSBs one input latch 0 0 1 0 A1* A0* Update one DAC latch 0 0 1 1 X X Update all 4 DAC latches
NOTE *The A1 and A0 inputs specify the relevant channel.
A1 A0 Channel
000 011 102 113
V
to DGND –0.3 +18 V
DD
V
to DGND –18 +0.3 V
SS
V
to V
DD
V
SS
to AGND –0.3 V
REFIN
Digital Inputs to DGND –0.3 V
–0.3 +26.4 V
DD DD
V
V AGND to DGND –0.3 +0.3 V Short to AGND on Analog Outputs Indefinite sec Power Dissipation 1.0 W T
75°C
A
Specification Temperature Range 0 +70 °C Storage Temperature –65 +150 °C Lead Temperature +300 °C Soldering, 10 seconds
*Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress
ratings only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD75004 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality.

ORDERING GUIDE

Model Temperature Range Package Option*
AD75004KN 0°C to +70°C N-24A AD75004KP 0°C to +70°C P-28A
*N = Plastic DIP; P = Plastic Leaded Chip Carrier.
REV. A
–3–
Page 4
AD75004
WR
A2
D7
D6 D5
D4
D3 D2
D1
D0
A3
CS
AGND
DGND A0
A1
V
DD
OUT3
V
V
OUT2
OUT0
V
OUT1
V
REFIN
V
V
SS
REFOUT
V
1
2 3
7
24
23 22
18
8
9
10
17 16
15 11
12
14
13
4
5
21
20
6
19
TOP VIEW
(Not to Scale)
AD75004KN
AD75004KP
TOP VIEW
(Not to Scale)
5
6 7 8 9
10 11
28 27 261234
25
24 23 22 21 20
19
12 13 14 15 16 17 18
D7
D6
D5
D4
D3 D2
D1 D0
WR
A2
A3
CS
AGND
DGND
A0
A1
V
DD
V
OUT3
V
OUT1
V
SS
NC
NC
NC
NC
NC = NO CONNECT
V
OUT2
V
OUT0
V
REFIN
V
REFOUT
4
PIN 1
IDENTIFIER
5
26
25
11
12
19
18
TOP VIEW
(PINS DOWN)
0.495 (12.57)
0.485 (12.32)
SQ
0.456 (11.58)
0.450 (11.43)
SQ
0.048 (1.21)
0.042 (1.07)
0.048 (1.21)
0.042 (1.07)
0.020 (0.50)
R
0.050 (1.27) BSC
0.021 (0.53)
0.013 (0.33)
0.430 (10.92)
0.390 (9.91)
0.032 (0.81)
0.026 (0.66)
0.180 (4.57)
0.165 (4.19)
0.040 (1.01)
0.025 (0.64)
0.056 (1.42)
0.042 (1.07)
0.025 (0.63)
0.015 (0.38)
0.110 (2.79)
0.085 (2.16)
PIN DESCRIPTIONS
Plastic PLCC DIP Pin Pin Name Description
1 1 D7 Data Input Bit 7 2 2 D6 Data Input Bit 6 3 3 D5 Data Input Bit 5 5 4 D4 Data Input Bit 4 6 5 D3 Data Input Bit 3 or 11 (MSB) 7 6 D2 Data Input Bit 2 or 10 9 7 D1 Data Input Bit 1 or 9 10 8 D0 Data Input Bit 0 (LSB) or 8 11 9 13 10
CS Chip Select Input; Active Low WR Write Input; Active Low
14 11 A3 Address Input Bit 3 (MSB) 15 12 A2 Address Input Bit 2 16 13 A1 Address Input Bit 1 17 14 A0 Address Input Bit 0 (LSB) 18 15 DGND Digital Ground 19 16 AGND Analog Ground 20 17 V 21 18 V 22 19 V 23 20 V 24 21 V 26 22 V 27 23 V 28 24 V
SS REFOUT REFIN OUT0 OUT1 OUT2 OUT3 DD
–12 V Power Supply +5 V Reference Output Reference Input Analog Output 0 Analog Output 1 Analog Output 2 Analog Output 3
+12 V Power Supply 4 NC No Internal Connection 8 NC No Internal Connection 12 NC No Internal Connection 25 NC No Internal Connection
PIN CONFIGURATIONS
24-Pin Plastic DIP
C1389a–5–10/91
28-Pin PLCC
Twos Complement Analog Output Value in DAC Latch Voltage
MSB LSB 0111 1111 1111 (2047/2048) * V 0000 0000 0001 (1/2048) * V 0000 0000 0000 0 V 1111 1111 1111 – (1/2048) * V 1000 0000 0000 –V
24
0.2
(5.08)
MAX
0.175 (4.45)
0.12 (3.05)
112
PIN 1
0.02 (0.508)
0.015 (0.381)

BINARY CODE TABLE

Plastic DIP (N-24A) PLCC (P-28A)
1.290 (32.77)
1.150 (29.21)
0.100 (2.54)
BSC
0.060 (1.52)
0.015 (0.38)
0.065 (1.66)
0.45 (1.15)
REFIN
13
0.55 (13.97)
0.53 (13.47)
0.150 (3.81) MIN
SEATING PLANE
REFIN
REFIN
REFIN
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm).
0.606 (15.4)
0.594 (15.09)
0.16 (4.07)
0.14 (3.56)
0.012 (0.305)
0.008 (0.203)
–4–
PRINTED IN U.S.A.
REV. A
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