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MAX547B Datasheet

Download or read online Maxim Integrated MAX547B Octal, Voltage-Output,13-Bit DAC with Parallel Interface pdf datasheet.



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19-0257; Rev 3; 12/95
_________________Ge ne ra l De sc ript ion
The MAX547 contains eight 13-bit, voltage-output digital-to-
analog converters (DACs). On-chip precision output ampli-
fiers provide the voltage outputs. The MAX547 operates
from a ±5V supply. Bipolar output voltages with up to ±4.5V
voltage swing can be achieved with no external compo-
nents. The MAX547 has four separate reference inputs;
each is connected to two DACs, providing different full-
scale output voltages for every DAC pair.
The MAX547 features double-buffered interface logic with a
13-bit parallel data bus. Each DAC has an input latch and a
DAC latch. Data in the DAC latch sets the output voltage. The
eight input latches are addressed with three address lines.
Data is loaded to the input latch with a single write instruction.
An asynchronous load (
L
D
_
) input transfers data from the
input latch to the DAC latch. The four
two DACs, and all DAC latches can be updated simultane-
ously by asserting all
L
D
_
pins. An asynchronous clear (
input resets the output of all eight DACs to AGND_. Asserting
C
L
R
resets both the DAC and the input latch to bipolar zero
(1000hex). On power-up, reset circuitry performs the same
function as
C
L
R
. All logic inputs are TTL/CMOS compatible.
The MAX547 is available in 44-pin plastic quad flat pack
and 44-pin PLCC packages.
________________________Applic a t ions
Automatic Test Equipment
Minimum Component-Count Analog Systems
Digital Offset/Gain Adjustment
Arbitrary Function Generators
Industrial Process Controls
Avionics Equipment
_______________________________________________________________Pin Configura t ions
TOP VIEW
VOUTB
1
2
VOUTA
V DD
3
REFAB
4
5
AGNDAB
6
LDAB
MAX547
7
LDCD
8
CS
9
WR
A2
10
11
A1
PLASTIC FP
________________________________________________________________ Maxim Integrated Products
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
Oc t a l, 1 3 -Bit Volt a ge -Out put DAC
w it h Pa ra lle l I nt e rfa c e
_____________________________Fe a t ure s
Full 13-Bit Performance without Adjustments
8 DACs in One Package
Buffered Voltage Outputs
Calibrated Linearity
Guaranteed Monotonic to 13 Bits
±5V Supply Operation
Unipolar or Bipolar Outputs Swing to ±4.5V
Fast Output Settling (5µs to ±
Double-Buffered Digital Inputs
Asynchronous Load Inputs Load Pairs of DAC Latches
Asynchronous
Ground
L
D
_
inputs each control
Power-On Reset Circuit Resets DACs to Analog Ground
C
L
R
)
Microprocessor and TTL/CMOS Compatible
________________Orde ring I nform a t ion
PART
MAX547ACQH
MAX547BCQH
MAX547ACMH
MAX547BCMH
MAX547BC/D
Ordering Information continued at end of data sheet.
*Contact factory for dice specifications.
VOUTG
33
VOUTB
7
32
VOUTH
VOUTA
8
31
V DD
V
9
30
REFGH
DD
AGNDGH
29
REFAB
10
28
GND
AGNDAB
11
27
LDGH
LDAB
12
26
LDEF
LDCD
13
25
D0
CS
14
24
D1
WR
15
23
D2
A2
16
A1
17
1
LSB)
2
C
L
R
Input Resets DACs to Analog
TEMP. RANGE
PIN-PACKAGE
0° C to +70° C
44 PLCC
0° C to +70° C
44 PLCC
0° C to +70° C
44 Plastic FP
0° C to +70° C
44 Plastic FP
0° C to +70° C
Dice*
6
5
4
3
2
1
44
43
42
41
40
VOUTG
39
VOUTH
38
V
37
36
REFGH
AGNDGH
35
MAX547
34
GND
33
LDGH
32
LDEF
31
D0
D1
30
D2
29
25
18
19 20
21
22 23
24
26
27 28
PLCC
INL
(LSBs)
±2
±4
±2
±4
±4
DD
1

Summary of Contents

Page 1

... Power-On Reset Circuit Resets DACs to Analog Ground – Microprocessor and TTL/CMOS Compatible ___Orde ring I nform a t ion PART MAX547ACQH MAX547BCQH MAX547ACMH MAX547BCMH MAX547BC/D Ordering Information continued at end of data sheet. Contact factory for dice specifications. VOUTG 33 VOUTB 7 32 VOUTH VOUTA ...

Page 2

... DD MAX547 E H ...-40° 85° Storage Temperature Range ...-65° 150° C Lead Temperature (soldering, 10sec) ...300° 10k , C 50pF CONDITIONS MAX547A MAX547B Guaranteed monotonic Gain/ V (Note 1) DD Gain/ V (Note 10k L (Notes 2, 3) Each REF pin (Note 3) To ± ...

Page 3

ELECTRICAL CHARACTERISTICS (continued 5V -5V, REF_ 4.096V, AGND_ GND 0V Typical values are 25° C.) A PARAMETER SYMBOL POWER SUPPLIES Positive Supply Range V DD Negative Supply ...

Page 4

-Bit Volt a ge -Out put DAC lle rfa c e ___Typic a l Ope ra t ing Cha rist ic ...

Page 5

Ope ra t ing Cha rist ont inue 5V -5V, REF_ 4.096V, AGND_ GND 0V POWER-SUPPLY REJECTION RATIO vs. ...

Page 6

-Bit Volt a ge -Out put DAC lle rfa c e ___Typic a l Ope ra t ing Cha rist ic ...

Page 7

De sc ript ion (c ont inue d) PIN NAME FLAT PLCC PACK Address Bit Address Bit Address Bit 0 1931 1325 D12D0 Data Bits 120 ...

Page 8

-Bit Volt a ge -Out put DAC lle rfa c e Reference and Analog-Ground Inputs The REF_ inputs can range between AGND_ and V However, ...

Page 9

Table 2. Interface Truth Table – – Both latches transparent ...

Page 10

-Bit Volt a ge -Out put DAC lle rfa c e Table 3. MAX547 Bipolar Code Table (AGND_ 0V) INPUT 1 1111 1111 1111 ...

Page 11

Table 5. Reference, AGND and Output Relationships BIPOLAR OPERATION PARAMETER Bipolar Zero Level, or Unipolar Mid-scale, (Code 1000000000000) Differential Reference Voltage ( Negative Full-scale Output (Code All 0s) Positive Full-Scale Output (Code All 1s) ...

Page 12

... AGND_. 12 ___ _Orde ring I nform a t ion (c ont inue d) PART REFAB MAX547AEQH -40° 85° C MAX547BEQH -40° 85° C MAX547AEMH -40° 85° C REFCD MAX547BEMH -40° 85° C MAX547 REFEF REFGH INL TEMP. RANGE PIN-PACKAGE (LSBs) 44 PLCC ±2 44 PLCC ± ...

Page 13

Dia gra INPUT LATCH A INPUT LATCH B INPUT LATCH C INPUT LATCH D DATA BUS D12D0 INPUT LATCH E INPUT LATCH F INPUT LATCH G INPUT LATCH ...

Page 14

-Bit Volt a ge -Out put DAC lle rfa c e ___Chip Topogra phy VOU TB VOU EFAB AGN D ...

Page 15

I nform a t ion ___ -Bit Volt a ge -Out put DAC lle rfa c e ...

Page 16

... Maxim reserves the right to change the circuitry and specifications without notice at any time. 16 ___M gra Produc brie l Drive , Sunnyva © 1995 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products. ...

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