Analog Devices AD9701 a Datasheet

250 MSPS Video

a

FEATURES
250 MSPS Update Rate
Low Glitch Impulse
Complete Composite Functions
Internal Voltage Reference
Single –5.2 V Supply

APPLICATIONS
Raster Scan Displays
Color Graphics
Automated Test Equipment
TV Video Reconstruction

GENERAL DESCRIPTION

The AD9701 is a high speed, 8-bit digital-to-analog converter
with fully integrated composite video functions. High speed
ECL input registers provide synchronous operation of data and
control functions up to 250 MSPS.

The AD9701 incorporates onboard control functions including
horizontal sync, blanking, reference white level and a 10%
bright signal for highlighting. The setup level is also adjustable
from 0 IRE units to 20 IRE units through the control pin. An
internal voltage reference allows the AD9701 to operate as a
stand-alone video reconstruction DAC.

The AD9701 is available as an industrial temperature range
device, –25°C to +85°C, and as an extended temperature range

Digital-to-Analog Converter

AD9701

FUNCTIONAL BLOCK DIAGRAM

device, –55°C to +125°C. Both grades of the AD9701 are pack­aged in a 22-pin ceramic DIP with the extended temperature
device also available in a 28-pin LCC package.

PIN CONFIGURATIONS

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.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone] World Wide Web Site: http://www.analog.com
Fax: [phone] © Analog Devices, Inc., 1996

AD9701–SPECIFICATIONS

ABSOLUTE MAXIMUM RATINGS

Supply Voltage (–VS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . –7 V

Digital Input Voltages (Including STROBE, SYNC,

BLANKING, 10% BRIGHT and REFERENCE

WHITE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0 V to –V

Analog Output Current . . . . . . . . . . . . . . . . . . . . . . . . 37 mA

Power Dissipation (+25°C Free Air)

ELECTRICAL CHARACTERISTICS

1

2

. . . . . . . . . . . . 780 mW

(Supply Voltages = –5.2 V; RL = 37.5 V; Setup = 0 V, unless otherwise noted)

Operating Temperature Range

AD9701BQ . . . . . . . . . . . . . . . . . . . . . . . . –25°C to +85°C

AD9701SQ/SE . . . . . . . . . . . . . . . . . . . . . –55°C to +125°C

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

Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . +175°C

S

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

AD9701BQ AD9701SQ/SE

Parameter Temp Min Typ Max Min Typ Max Units

RESOLUTION 8 8 Bits
DC ACCURACY

Differential Linearity +25°C 0.25 0.5 0.25 0.5 LSB

Full 1.0 1.0 LSB

Integral Linearity +25°C 0.25 0.5 0.25 0.5 LSB

Full 1.0 1.0 LSB

Monotonicity Full Guaranteed Guaranteed

INITIAL OFFSET ERROR

Zero-Scale Offset Error

3

4

+25°C 0.05 0.9 0.05 0.9 mV

Full 0.9 0.9 mV
Zero-Scale Offset Drift Coefficient Full 2 2 µV/°C
Full-Scale Drift Coefficient Full 50 50 µV/°C

ANALOG OUTPUT

Voltage Output

10% Bright
Reference White Full –67.45 –71 –74.55 –67.45 –71 –74.55 mV
Blanking (Setup = 0 IRE)
Sync (Setup = 0 IRE)

Current Output

10% Bright
Reference White Full –1.805 –1.9 –1.996 –1.805 –1.9 –1.995 mA
Blanking (Setup = 0 IRE)
Sync (Setup = 0 IRE)

5

6

7

8

5

6

7

8

Full –0.9 0 –0.9 0 mV

Full –698.55 –708.5 –718.45 –698.55 –708.5 –718.45 mV

Full –979.25 –993.5 –1007.75 –979.25 –993.5 –1007.75 mV

Full –0.024 0 –0.024 0 mA

Full –18.63 –18.9 –19.16 –18.63 –18.9 –19.16 mA

Full –26.11 –26.5 –26.87 –26.11 –26.5 –26.87 mA
Output Compliance Range Full –1.6; +0.1 –1.6; +0.1 V
Output Resistance +25°C 640 800 640 800 Ω

DYNAMIC PERFORMANCE

Update Rate +25°C 225 250 225 250 MSPS
Output Propagation Delay
Output Settling Time

9

10

+25°C56 56ns

Current +25°C8 8 ns

Voltage +25°C12 12 ns
Output Slew Rate
Output Rise Time
Output Fall Time

11

11

11

+25°C 255 300 255 300 V/µs
+25°C 1.7 2.0 1.7 2.0 ns
+25°C 1.7 2.0 1.7 2.0 ns

Glitch Impulse +25°C 60 70 60 70 pV-s

SETUP CONTROL

12

Setup Level (Grounded) Full 0 0 IRE
Setup Level (Open) Full 7.5 7.5 IRE
Setup Level

(Tied to –5.2 V with 1 kΩ) Full 10 10 IRE
Setup Level (–5.2 V) Full 20 20 IRE

DIGITAL INPUTS

Logic “1” Voltage Full –1.1 –1.1 V
Logic “0” Voltage Full –1.5 –1.5 V
Logic “1” Current Full 100 100 µA
Logic “0” Current Full 15 15 µA
Input Capacitance +25°C 4 5.5 4 5.5 pF
Data Setup Time +25°C 0.1 0.1 ns
Data Hold Time +25°C 1.4 1.4 ns

–2–

REV. A