Analog Devices AD8600 Datasheet

R/W

V

DD1

LD

CONTROL

LOGIC

ADDRESS

DECODE

16 x 8

INPUT

REGISTERS

RS

V

DD2VREFVCC

16 x 8

DAC

REGISTERS

16

8-BIT

DACS

CS
EN

A3
A2
A1
A0

DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0

O0
O1
O2
O3
O4
O5
O6
O7
O8
O9
O10
O11
O12
O13
O14
O15

V

EE

D

GND1

D

GND2

DACGND

AD8600

16-Channel, 8-Bit

V

DD1

DACGND

R/W•CS•ADDRESS

RS

V

DD2

V

REF

V

CC

D

GND2

D

GND1

R-2R

DAC

LD•EN

V

EE

RS

R/

W•CS•ADDR•EN

O

X

DAC

REGISTER

INPUT

REGISTER

DB7...DB0

a

FEATURES
16 Independently Addressable Voltage Outputs
Full-Scale Set by External Reference
2 µs Settling Time
Double Buffered 8-Bit Parallel Input
High Speed Data Load Rate
Data Readback
Operates from Single +5 V
Optional ±6 V Supply Extends Output Range

APPLICATIONS
Phased Array Ultrasound & Sonar

Power Level Setting

Receiver Gain Setting
Automatic Test Equipment
LCD Clock Level Setting

GENERAL DESCRIPTION

The AD8600 contains 16 independent voltage output digital-to­analog converters that share a common external reference input
voltage. Each DAC has its own DAC register and input register
to allow double buffering. An 8-bit parallel data input, four ad­dress pins, a
digital interface.

The AD8600 is constructed in a monolithic CBCMOS process
which optimizes use of CMOS for logic and bipolar for speed
and precision. The digital-to-analog converter design uses volt­age mode operation ideally suited to single supply operation.
The internal DAC voltage range is fixed at DACGND to V
The voltage buffers provide an output voltage range that ap­proaches ground and extends to 1.0 V below V
reference voltage values and digital inputs will settle within
±1 LSB in 2 µs.

Data is preloaded into the input registers one at a time after the
internal address decoder selects the input register. In the write
mode (R/
the positive edge of the
be used to load the data. After changes have been submitted to
the input registers, the DAC registers are simultaneously up­dated by a common load
put voltages simultaneously appear on all 16 outputs.

CS select, a LD, EN, R/W, and RS provide the

.

REF

. Changes in

CC

W low) data is latched into the input register during

EN pulse. Pulses as short as 40 ns can

EN × LD strobe. The new analog out-

Multiplying DAC

AD8600*

FUNCTIONAL BLOCK DIAGRAM

At system power up or during fault recovery the reset (RS) pin
forces all DAC registers into the zero state which places zero
volts at all DAC outputs.

The AD8600 is offered in the PLCC-44 package. The device is
designed and tested for operation over the extended industrial
temperature range of –40°C to +85°C.

Figure 1. Equivalent DAC Channel

*Patent pending.

REV. 0

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.

One Technology Way, P.O. Box 9106, Norwood. MA 02062-9106, U.S.A.
Tel: [phone] Fax: [phone]

AD8600–SPECIFICA TIONS

(@ V

= V

SINGLE SUPPLY

DD1

= VCC = +5 V ± 5%, V

DD2

Parameter Symbol Condition Min Typ Max Units

STATIC PERFORMANCE

Resolution N 8 Bits
Relative Accuracy

2

Differential Nonlinearity
Full-Scale Voltage V
Full-Scale Tempco TCV
Zero Scale Error V

Reference Input Resistance R

ANALOG OUTPUT

Output Voltage Range
Output Current I
Capacitive Load C

1

2

2

INL –1 ±1/2 +1 LSB
DNL Guaranteed Monotonic –1 ±1/4 +1 LSB

FS

ZSE

V

ZSE
REF

OVR

OUT

L

Data = FF
Data = FF

FS

Data = 00H, RS = “0,” TA= +25°C +3.5 LSB
Data = 00H, RS = “0” +5 LSB
Data = AB

V

SS

= +2.5 V 0.000 2.500 V

REF

Data = 80
No Oscillation 50 pF

LOGIC INPUTS

Logic Input Low Voltage V
Logic Input High Voltage V
Logic Input Current I
Logic Input Capacitance

3

IL
IH

IL

C

IL

LOGIC OUTPUTS

Logic Out High Voltage V
Logic Out Low Voltage V

AC CHARACTERISTICS

3

Slew Rate SR For ∆V
Voltage Output Settling Time
Voltage Output Settling Time2t

OH
OL

2

t

S1
S2

IOH = –0.4 mA 3.5 V
IOL = 1.6 mA 0.4 V

REF

±1 LSB of Final Value, Full-Scale Data Change 2 µs
±1 LSB of Final Value, ∆V

POWER SUPPLIES

Positive Supply Current I
Logic Supply Currents I
Power Dissipation P

CC
DD1&2

DISS

Power Supply Sensitivity PSS ∆V
Logic Power Supply Range V
Positive Power Supply Range3V

NOTES

1

When V

2

Single supply operation does not include the final 2 LSBs near analog ground. If this performance is critical, use a negative supply (VEE) pin of at least –0.7 V to
–5.25 V. Note that for the INL measurement zero-scale voltage is extrapolated using codes 710 to 8010.

3

Guaranteed by design not subject to production test.

Specifications subject to change without notice.

= 2.500 V, 1 LSB = 9.76 mV.

REF

DDR
CCR

V

= 5 V, VIL = 0 V, No Load 24 35 mA

IH

V

= 5 V, VIL = 0 V, No Load 0.1 mA

IH

V

= 5 V, VIL = 0 V, No Load 120 175 mW

IH

= ±5% 0.007 %/%

CC

= 0 V, V

EE

H
H

H

H

= +2.500 V, –40°C ≤ TA ≤ +85°C, unless otherwise noted)

REF

2.480 2.490 2.500 V
±20 ppm/°C

1.2 2 kΩ

±2mA

0.8 V

2.4 V

10 µA
10 pF

or FS Code Change 4 7 V/µs

= 1 V, Data = FF

REF

H

2 µs

4.75 5.25 V

V

DD

7.0 V

–2–

REV. 0

AD8600

(@ V

= V

DUAL SUPPLY

DD1

= VCC = +5 V ± 5%, V

DD2

Parameter Symbol Condition Min Typ Max Units

STATIC PERFORMANCE

1

Resolution N 8 Bits
Total Unadjusted Error TUE All Other DACs Loaded with Data = 55
Relative Accuracy INL –1 ± 1/2 +1 LSB
Differential Nonlinearity DNL Guaranteed Monotonic –1 ±1/4 +1 LSB
Full-Scale Voltage V
Full-Scale Voltage Error V

FS
FSE

Full-Scale Tempco TCV
Zero Scale Error V
Zero Scale Error V
Zero Scale Error V

ZSE
ZSE
ZSE

Zero Scale Tempco TCV
Reference Input Resistance R
Reference Input Capacitance2C

REF
REF

Data = FFH, V
Data = FFH, V
Data = FFH, V

FS

Data = 00H, RS = “0,” TA = +25°C–2±1+2 mV
Data = 00H, All Other DACs Data = 00
Data = 00H, All Other DACs Data = 55
Data = 00H, VCC = +5 V, VEE = –5 V ±10 µV/°C

ZS

Data = AB
Data = AB

ANALOG OUTPUT

Output Voltage Range OVR
Output Voltage Range
Output Current I
Capacitive Load

2

2

OVR

OUT

C

L

V

1
2

= +3.5 V 0.000 3.500 V

REF

V

= V

CC

Data = 80
No Oscillation 50 pF

LOGIC INPUTS

Logic Input Low Voltage V
Logic Input High Voltage V
Logic Input Current I
Logic Input Capacitance

2

IL
IH

IL

C

IL

LOGIC OUTPUTS

Logic Out High Voltage V
Logic Out Low Voltage V

AC CHARACTERISTICS

2

OH
OL

IOH = –0.4 mA 3.5 V
IOL = 1.6 mA 0.4 V

Reference In Bandwidth BW –3 dB Frequency, V
Slew Rate SR For ∆V
Voltage Noise Density e
Digital Feedthrough FT Digital Inputs to DAC Outputs 10 nVs
Voltage Output Settling Time
Voltage Output Settling Time3t

N

3

t

S1
S2

f = 1 kHz, V

±1 LSB of Final Value, FS Data Change 1 2 µs
±1 LSB of Final Value, ∆V

POWER SUPPLIES

Positive Supply Current I
Negative Supply Current I
Logic Supply Currents I
Power Dissipation

4

CC
EE
DD1&2

P

DISS

Power Supply Sensitivity PSS ∆V
Logic Power Supply Range V
Pos Power Supply Range
Neg Power Supply Range

NOTES

1

When V

2

Guaranteed by design not subject to production test.

3

Settling time test is performed using RL = 50 kΩ and CL = 35 pF.

4

Power Dissipation is calculated using 5 V × (IDD + |ISS| + I

Specifications subject to change without notice.

= +3.500 V, 1 LSB = 13.67 mV.

REF

2

2

V
V

DDR
CCR
EER

V

= 5 V, VIL = 0 V, VEE = –5 V, No Load 22 35 mA

IH

V

= 5 V, VIL = 0 V, VEE = –5 V, No Load 22 35 mA

IH

V

= 5 V, VIL = 0 V, VEE = –5 V, No Load 0.1 mA

IH

V

= 5 V, VIL = 0 V, VEE = –5 V, No Load 225 350 mW

IH

CC

DD1

= –5 V ± 5%, V

EE

REF
REF
REF

H
H

= +7 V, V

DD2

H

= +3.5 V 3.473 3.486 3.500 V
= +3.5 V –1 +1 LSB
= +3.5 V ±20 ppm/°C

EE

= +3.500 V, –40°C ≤ TA ≤ +85°C, unless otherwise noted)

REF

H

H
H

–1 ±3/4 +1 LSB

–1 +1 LSB

±1/2 LSB

1.2 2 kΩ

= –0.7 V, V

= 5 V 0.000 5.000 V

REF

±2mA

240 pF

0.8 V

2.4 V
10 µA
10 pF

= 2.5 VDC + 0.1 V

or FS Code Change 4 7 V/µs

REF

REF

= 0 V 46 nV/√Hz

REF

= 1 V, Data = FF

REF

AC

500 kHz

H

12 µs

& ∆VEE = ±5% 0.007 %/%

4.75 5.25 V

V

DD

7.0 V

–5.25 0.0 V

+ I

).

DD2

REV. 0

–3–

AD8600

t

RWD

HIGH -Z

t

AD

t

CSZ

t

CSD

R/W

DATA

ADDR

EN

CS

(@ V

= V

= VCC = +5 V ± 5%, V

DD2

ELECTRICAL CHARACTERISTICS

DD1

unless otherwise noted)

Parameter Symbol Condition Min Typ Max Units

INTERFACE TIMING

Clock (EN) Frequency f
Clock (

EN) High Pulse Width t

Clock (

EN) LowPulse Width t
Data Setup Time t
Data Hold Time t
Address Setup Time t
Address Hold Time t
Valid Address to Data Valid t
Load Enable Setup Time t
Load Enable Hold Time t
Read/Write to Clock (
Read/Write to DataBus Hi-Z t
Read/Write to DataBus Active t
Clock (

EN) to Read/Write t
Clock (

EN) to Chip Select t
Chip Select to Clock (
Chip Select to Data Valid t
Chip Select to DataBus Hi-Z t
Reset Pulse Width t

NOTES

1

Guaranteed by design not subject to production test.

2

All logic input signals have maximum rise and fall times of 2 ns.

Specifications subject to change without notice.

1, 2

CLK
CH
CL
DS
DH
AS
AH
AD
LS

EN)t

EN)t

LH
RWC
RWZ
RWD
TWH
TCH
CSC
CSD
CSZ
RS

Data Loading 12.5 MHz

= –5 V, V

EE

= +3.500 V, –40°C ≤ TA ≤ +85°C,

REF

40 ns
40 ns
40 ns
10 ns
0ns
0ns

160 ns
0ns
0ns
30 ns

120 ns

120 ns
0ns
0ns
30 ns

120 ns

150 ns
25 ns

DATA

ADDR

R/W

EN

CS

t

RWZ

t

t

RWC

AS

t

CSC

t

DS

Figure 2. Write Timing

t

TWH

t

DH

t

AH

t

CH

t

CL

t

TCH

HIGH-Z

Figure 3. Readback Timing

LD

t

LS

EN

RS

OUT

t

LH

t

RS

t

S1

t

S1

Figure 4. Write to DAC Register & Voltage Output Settling

Timing (CS= High, Prevents Input Register Changes)

–4–

REV. 0

AD8600

WARNING!

ESD SENSITIVE DEVICE

ABSOLUTE MAXIMUM RATINGS

(TA= +25°C unless otherwise noted)

V

(Digital Supply) to GND . . . . . . . . . . . . . .–0.3 V, +7 V

DD1

V

(DAC Buffer/Driver Supply) . . . . . . . . . . . .–0.3 V, +7 V

DD2

V

(Analog Supply) to GND . . . . . . . . . . . . . . .–0.3 V, +7 V

CC

V

(Analog Supply) to GND . . . . . . . . . . . . . . .+0.3 V, –7 V

EE

V

to GND . . . . . . . . . . . . . . . . . . . . . . –0.3 V, V

REF

V

to V

DD2

V

to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V

OUT

Short Circuit Duration

V

OUT

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .–0.3 V

REF

1

to GND or Power Supplies

. . . . . . . . . . . . . . .

Digital Input/Output Voltage to GND . . . –0.3 V, V
Thermal Resistance–Theta Junction-to-Ambient (θ

+ 0.3 V

CC

CC

Continuous

+ 0.3 V

DD

)

JA

PLCC-44 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47°C/W

Package Power Dissipation . . . . . . . . . . . . . . . . (T

– TA)/θ

J

JA

Maximum Junction Temperature TJ max . . . . . . . . . . .150°C

Operating Temperature Range . . . . . . . . . . . . –40°C to +85°C

Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C

Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . +300°C

NOTE

1

No more than four outputs may be shorted to power or GND simultaneously.

PIN CONFIGURATION

CC

DD2

DGND2

V

V

43

25 28

26

A2

A0

A1

EE

V

O8

404142

O9

39
38

O10
O11

37

O12

36
35

O13

34

O14

33

O15

32

DGND1

31

LD

30

CS

29

EN

27

A3

R/W

O6

7
8

O5

9

O4

10

O3
O2

11

O1

12
13

O0

V

14

DD1

RS

15

DB0

16

DB1

17

NC = NO CONNECT

O7

DB2

EE

V

DB3

CC

V

DB4

REF

NC

DACGND

V

3

AD8600

TOP VIEW

(Not to Scale)

21 24

22182019

23

DB7

DB5

DB6

4412645

ORDERING GUIDE

Package Package

Model Temperature Description Option

AD8600AP –40°C to +85°C 44-Lead PLCC P-44A
AD8600Chips +25°C Die*

*For die specifications contact your local Analog Devices sales office.

The AD8600 contains 5782 transistors.

PIN DESCRIPTION

Pin No. Name Description

1 NC No Connection
2V

REF

Reference input voltage common
to all DACs.

3 DACGND DAC Analog Ground Return. Sets

analog zero-scale voltage.
4V
5V

CC
EE

Output Amplifier Positive Supply

Output Amplifier Negative Supply
6 O7 DAC Channel Output No. 7
7 O6 DAC Channel Output No. 6
8 O5 DAC Channel Output No. 5
9 O4 DAC Channel Output No. 4
10 O3 DAC Channel Output No. 3
11 O2 DAC Channel Output No. 2
12 O1 DAC Channel Output No. 1
13 O0 DAC Channel Output No. 0
14 V
15

DD1

RS Active Low Reset Input Pin

Digital Logic Power Supply

16 DB0 Data Bit Zero I/O (LSB)
17 DB1 Data Bit I/O
18 DB2 Data Bit I/O
19 DB3 Data Bit I/O
20 DB4 Data Bit I/O
21 DB5 Data Bit I/O
22 DB6 Data Bit I/O
23 DB7 Most Significant Data Bit I/O (MSB)
24 A0 Address Bit Zero (LSB)
25 A1 Address Bit
26 A2 Address Bit
27 A3 Most Significant Addr Bit (MSB)
28 R/
29
30
31

W Read/Write Select Control Input
EN Active Low Enable Clock Strobe
CS Chip Select Input
LD DAC Register Load Strobe

32 DGND1 Digital Ground Input No. 1
33 O15 DAC Channel Output No. 15
34 O14 DAC Channel Output No. 14
35 O13 DAC Channel Output No. 13
36 O12 DAC Channel Output No. 12
37 O11 DAC Channel Output No. 11
38 O10 DAC Channel Output No. 10
39 O9 DAC Channel Output No. 9
40 O8 DAC Channel Output No. 8
41 V
42 V

EE
CC

Output Amplifier Negative Supply

Output Amplifier Positive Supply
43 DGND2 Digital Ground Input No. 2
44 V

DD2

DAC Analog Supply Voltage

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 AD8600 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.

REV. 0

–5–