Analog Devices AD9060 Datasheet

10-Bit 75 MSPS

a

FEATURES
Monolithic 10-Bit/75 MSPS Converter
ECL Outputs
Bipolar (61.75 V) Analog Input
57 dB SNR @ 2.3 MHz Input
Low (45 pF) Input Capacitance
MIL-STD-883 Compliant Versions Available

APPLICATIONS
Digital Oscilloscopes
Medical Imaging
Professional Video
Radar Warning/Guidance Systems
Infrared Systems

GENERAL DESCRIPTION

The AD9060 A/D converter is a 10-bit monolithic converter ca­pable of word rates of 75 MSPS and above. Innovative architec­ture using 512 input comparators instead of the traditional 1024
required by other flash converters reduces input capacitance and
improves linearity.

Inputs and outputs are ECL-compatible, which makes the
AD9060 the recommended choice for systems with conversion
rates >30 MSPS to minimize system noise. An overflow bit is
provided to indicate analog input signals greater than +V

Voltage sense lines are provided to ensure accurate driving of
the ±V

voltages applied to the units. Quarter-point taps on

REF

the resistor ladder help optimize the integral linearity of the
unit.

Either 68-pin ceramic leaded (gull wing) packages or ceramic
LCCs are available and specifically designed for low thermal im­pedances. Two performance grades for temperatures of both
0°C to +70°C and –55°C to +125°C ranges are offered to allow
the user to select the linearity best suited for each application.
Dynamic performance is fully characterized and production
tested at +25°C. MIL-STD-883 units are available.

The AD9060 A/D converter is available in versions compliant
with MIL-STD-883. Refer to the Analog Devices Military Prod-
ucts Databook or current AD9060/883B data sheet for detailed
specifications.

SENSE

.

ANALOG IN

+V

+V

SENSE

3/4

1/2

1/4

–V

SENSE

–V

ENCODE

A/D Converter

AD9060

FUNCTIONAL BLOCK DIAGRAM

LSBS

MSB

INVERT

INVERT

5961

8
9

12

REF

11

R/2

R/2

7

REF

R/2

R/2

1

REF

R/2

R/2

63

REF

R/2

57
56

REF

14ENCODE
13

OVERFLOW

512

C

R

R

R

R

R

R

R

R

R/2

O

385

M

P

384

A

R

A

257

256

129

128

2

1

OVERFLOW OVERFLOW

T

O

R

L

A

T

C

H

E

S

D
E
C
O
D
E

L

1024 10

O
G
I
C

–V

+V

S

S

GROUND

51

OVERFLOW

50

D9 (MSB)
D

49
48
47
46
23

22

21
20

19

8

D

7

D

6

D

5

D

4

D

3

D

2

D

1

D0 (LSB)

L

A

T

C

H

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., 1997

AD9060–SPECIFICA TIONS

ABSOLUTE MAXIMUM RATINGS

+VS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +6 V

–V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –6 V

S

ANALOG IN . . . . . . . . . . . . . . . . . . . . . . . . . . . .–2 V to +2 V

+V

, –V

, 3/4

, 1/2

REF
REF

REF

to –V

+V
ENCODE,

REF

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.0 V

REF

ENCODE . . . . . . . . . . . . . . . . . . . . . . .0 V to –V

REF

, 1/4

ELECTRICAL CHARACTERISTICS

1

. . . . . . . . . –2 V to +2 V

REF

(+VS = +5 V; –VS = –5.2 V; 6V
unless otherwise noted)

3/4

, 1/2

, 1/4

REF

REF

Current . . . . . . . . . . . . . . . . . . ±10 mA

REF

Digital Output Current . . . . . . . . . . . . . . . . . . . . . . . . 20 mA

Operating Temperature

AD9060JE/KE/JZ/KZ . . . . . . . . . . . . . . . . . . 0°C to +70°C

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

Maximum Junction Temperature

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

S

= 61.75 V; ENCODE = 60 MSPS

SENSE

3

2

. . . . . . . . . . . . . . . +175°C

Test AD9060JE/JZ AD9060KE/KZ

Parameter (Conditions) Temp Level Min Typ Max Min Typ Max Units

RESOLUTION 10 10 Bits
DC ACCURACY

3

Differential Nonlinearity +25°C I 1.0 1.25 0.75 1.0 LSB

Full VI 1.5 1.25 LSB

Integral Nonlinearity +25°C I 1.25 2.0 1.0 1.5 LSB

Full VI 2.5 2.0 LSB

No Missing Codes Full VI Guaranteed

ANALOG INPUT

Input Bias Current

4

+25°C I 0.4 1.0 0.4 1.0 mA

Full VI 2.0 2.0 mA
Input Resistance +25°C I 2.0 7.0 2.0 7.0 kΩ
Input Capacitance

4

+25°C V 45 45 pF
Analog Bandwidth +25°C V 175 175 MHz

REFERENCE INPUT

Reference Ladder Resistance +25°C I 22 37 56 22 37 56 Ω

Full VI 14 66 14 66 Ω
Ladder Tempco Full V 0.1 0.1 Ω/°C
Reference Ladder Offset

Top of Ladder +25°C I 45 90 45 90 mV

Full VI 90 90 mV

Bottom of Ladder +25°C I 45 90 45 90 mV

Full VI 90 90 mV
Offset Drift Coefficient Full V 50 50 µV/°C

SWITCHING PERFORMANCE

Conversion Rate +25°C I 75 75 MSPS
Aperture Delay (t
Aperture Uncertainty (Jitter) +25°C V 5 5 ps, rms
Output Delay (t

) +25°CV 1 1 ns

A

5

OD

)

+25°CI249249ns
Output Rise Time +25°CI 13 13ns
Output Fall Time +25°CI 13 13ns
Output Time Slew

5

+25°C I 1.5 3 1.5 3 ns

DYNAMIC PERFORMANCE

Transient Response +25°C V 10 10 ns
Overvoltage Recovery Time +25°C V 10 10 ns
Effective Number of Bits (ENOB)

f

= 2.3 MHz +25°C I 8.7 9.1 8.7 9.1 Bits

IN

f

= 10.3 MHz +25°C IV 8.0 8.6 8.0 8.6 Bits

IN

f

= 29.3 MHz +25°C IV 7.0 7.4 7.0 7.4 Bits

IN

Signal-to-Noise Ratio

6

fIN = 2.3 MHz +25°C I 54 56 54 56 dB
f

= 10.3 MHz +25°C I 51 54 51 54 dB

IN

fIN = 29.3 MHz +25°C I 44 47 44 47 dB

–2–

REV. A

AD9060

Test AD9060JE/JZ AD9060KE/KZ

Parameter (Conditions) Temp Level Min Typ Max Min Typ Max Units

DYNAMIC PERFORMANCE

(CONTINUED)
Signal-to-Noise Ratio

(Without Harmonics)

f

= 2.3 MHz +25°C I 54 56 54 58 dB

IN

f

= 10.3 MHz +25°C I 51 55 51 55 dB

IN

f

= 29.3 MHz +25°C I 46 48 46 48 dB

IN

Harmonic Distortion

f

= 2.3 MHz +25°C I 61 65 61 65 dBc

IN

f

= 10.3 MHz +25°C I 55 58 55 58 dBc

IN

f

= 29.3 MHz +25°C I 47 50 47 50 dBc

IN

Two-Tone Intermodulation

Distortion Rejection
Differential Phase +25°C V 0.5 0.5 Degree
Differential Gain +25°CV 1 1 %

ENCODE INPUT

Logic “1” Voltage Full VI –1.1 –1.1 V
Logic “0” Voltage Full VI –1.5 –1.5 V
Logic “1” Current Full VI 150 300 150 300 µA
Logic “0” Current Full VI 150 300 150 300 µA
Input Capacitance +25°CV 5 5 pF
Pulse Width (High) +25°CI 6 6 ns
Pulse Width (Low) +25°CI 6 6 ns

6

7

+25°C V 70 70 dBc

DIGITAL OUTPUTS

Logic “1” Voltage Full VI –1.1 –1.1 V
Logic “0” Voltage Full VI –1.5 –1.5 V

POWER SUPPLY

+V

Supply Current +25°C VI 420 500 420 500 mA

S

Full VI 500 500 mA

–V

Supply Current +25°C VI 150 180 150 180 mA

S

Full VI 190 190 mA

Power Dissipation +25°C VI 2.8 3.3 2.8 3.3 W

Full VI 3.5 3.5 W

Power Supply Rejection

Ratio (PSRR)

NOTES

1

Absolute maximum ratings are limiting values to be applied individually and beyond which the serviceability of the circuit may be impaired. Functional operability is
not necessarily implied. Exposure to absolute maximum rating conditions for an extended period of time may affect device reliability.

2

Typical thermal impedances (part soldered onto board): 68-pin leaded ceramic chip carrier: θJC = 1°C/W; θJA = 17°C/W (no air flow); θJA = 15°C/W
(air flow = 500 LFM). 68-pin ceramic LCC: θJC = 2.6°C/W; θJA = 15°C/W (no air flow); θJA = 13°C/W (air flow = 500 LFM).

3

3/4

, 1/2

REF

CL < 4 pF. Accuracy of the overflow comparator is not tested and not included in linearity specifications.

4

Measured with ANALOG IN = +V

5

Output delay measured as worst-case time from 50% point of the rising edge of ENCODE to 50% point of the slowest rising or falling edge of D0–D9. Output skew
measured as worst-case difference in output delay among D0–D9.

6

RMS signal to rms noise with analog input signal 1 dB below full scale at specified frequency.

7

Intermodulation measured with analog input frequencies of 2.3 MHz and 3.0 MHz at 7 dB below full scale.

8

Measured as the ratio of the worst-case change in transition voltage of a single comparator for a 5% change m +VS or –VS.

Specifications subject to change without notice.

REF

and 1/4

8

reference ladder taps are driven from dc sources at +0.875 V, 0 V and –0.875 V, respectively. Outputs terminated through 100 Ω to –2.0 V;

REF

SENSE

Full VI 6 10 6 10 mV/V

REV. A

–3–

AD9060

WARNING!

ESD SENSITIVE DEVICE

EXPLANATION OF TEST LEVELS
Test Level

I – 100% production tested.
II – 100% production tested at +25°C and sample tested at

specified temperatures.
III – Sample tested only.
IV – Parameter is guaranteed by design and characterization

testing.
V – Parameter is a typical value only.
VI – All devices are 100% production tested at +25°C. 100%

production tested at temperature extremes for extended

temperature devices; sample tested at temperature extremes

for commercial/industrial devices.

ORDERING GUIDE

DIE LAYOUT AND MECHANICAL INFORMATION

Die Dimensions . . . . . . . . . . . . . . . . 206 × 140 × 15 (±2) mils

Temperature Package

Device Range Options

AD9060JZ 0°C to +70°C Z-68
AD9060JE 0°C to +70°C E-68A
AD9060KZ 0°C to +70°C Z-68
AD9060KE 0°C to +70°C E-68A
AD9060SZ
AD9060SE
AD9060TZ
AD9060TE

2
2

2
2

–55°C to +125°C Z-68
–55°C to +125°C E-68A
–55°C to +125°C Z-68
–55°C to +125°C E-68A

1

Pad Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 × 4 mils

Metalization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Gold

Backing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . None

Substrate Potential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .–V

Passivation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Nitride

AD9060/PCB 0°C to +70°C Evaluation Board

NOTES

1

E = Ceramic Leadless Chip Carrier; Z = Ceramic Leaded Chip Carrier.

2

For specifications, refer to Analog Devices Military Products Databook.

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 AD9060 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.

S

–4–

REV. A