Maxim MAX1114BIDO, MAX1114BIBH, MAX1114AIDO, MAX1114AIBH Datasheet

19-1101; Rev 0; 6/96

EVALUATION KIT

AVAILABLE

8-Bit, 150Msps Flash ADC

_______________General Description

The MAX1114 is a monolithic, flash analog-to-digital
converter (ADC) that can digitize a 2V analog input
signal into 8-bit digital words at a typical 150Msps
update rate.

For most applications, no external sample-and-hold is
required for accurate conversion due to the device's
narrow aperture time, wide bandwidth, and low input
capacitance. A single standard -5.2V power supply is
required to operate the MAX1114, with nominal 2.2W
power dissipation. A special decoding scheme reduces
metastable errors to 1LSB.

The part is packaged in a 42-pin ceramic sidebraze
that is pin-compatible with the CX20116 and
CXA1396D. The surface-mount 44-pin CERQUAD
allows access to additional reference ladder taps, an
overrange bit, and a data-ready output. For higher con­version rates, the pin-compatible 300Msps MAX1125 is
available.

________________________Applications

Digital Oscilloscopes
Transient Capture
Radar, EW, ECM
Direct RF Down-Conversion
Medical Electronics

Ultrasound, CAT Instrumentation

_________________Pin Configurations

TOP VIEW

DGND
AGND

V

EE

MINV

CLK
CLK

V

EE

AGND
AGND

VRBS
VRBF

1
2
3
4

5
6
7
8
9

10

11

D7D6D5D4D3D2D1

D8 (MSB)

44

40

41

42

43

MAX1114

15

16

13

14

12

EE

V

VIN

VR1

AGND

AGND

CERQUAD

D0 (LSB)

DREADY

DGND

35

36

37

38

39

18

17

VR2

AGND

34

33

AGND

32

V

EE

31

LINV

30

N.C.

29

DRINV

28

N.C.

27

V

EE

26

AGND

25

AGND

24

VRTS

23

VRTF

22

20

21

19

EE

V

VIN

VR3

AGND

____________________________Features

♦ Metastable Errors Reduced to 1LSB
♦ 10pF Input Capacitance
♦ 210MHz Input Bandwidth
♦ 150Msps Conversion Rate
♦ 2.2W Typical Power Dissipation
♦ Single -5.2V Supply

______________Ordering Information

PART

MAX1114AIDO
MAX1114BIDO
MAX1114AIBH -20°C to +85°C
MAX1114BIBH -20°C to +85°C 44 CERQUAD

Functional Diagram appears at end of data sheet.

TEMP. RANGE PIN-PACKAGE

-20°C to +85°C

-20°C to +85°C

42 Ceramic SB
42 Ceramic SB
44 CERQUAD

INL (LSBs)

±0.75

±1

±0.75

±1

____Pin Configurations (continued)

TOP VIEW

N.C.

42

VRTF

41

N.C.

40



V

EE

39



V

EE

38

N.C.

37

N.C.

36

AGND

35

VIN

34

AGND

33

VR2

32

AGND

31

VIN

30

AGND

29

N.C.

28

N.C.

27



V

26

EE



V

25

EE

N.C.

24

VRBF

23

N.C.

22

N.C.

LINV

AGND
DGND

DO (LSB)

D7 (MSB)

DGND
AGND

MINV

N.C.
CLK
CLK

V



1

EE

2
3



V

4

EE

5
6
7
8

D1

9

D2

10

D3

11

D4

12

D5

13

D6

14
15
16
17



V

EE

18
19
20
21

MAX1114

Ceramic SB

MAX1114

________________________________________________________________

Maxim Integrated Products

1

For free samples & the latest literature: http://www.maxim-ic.com, or phone [phone]

8-Bit, 150Msps Flash ADC

ABSOLUTE MAXIMUM RATINGS

Negative Supply Voltage (VEETO GND) ..............-7.0V to +0.5V

Ground Voltage Differential...................................-0.5V to +0.5V

Analog Input Voltage ...............................................V

Reference Input Voltage..........................................V

Digital Input Voltage.................................................V

Reference Current V

Stresses beyond 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 beyond those indicated in the operational sections of the specifications is not implied. Exposure to

MAX1114

absolute maximum rating conditions for extended periods may affect device reliability.

RTF

to V

.........................................25mA

RBF

to +0.5V

EE

to +0.5V

EE

to +0.5V

EE

ELECTRICAL CHARACTERISTICS

(VEE= -5.2V, R
unless otherwise noted.)

DC ACCURACY

ANALOG INPUT

REFERENCE INPUT

TIMING CHARACTERISTICS

CLK-to-Data Ready Delay

= 50Ω, VRBF = -2.00V, VR2 = -1.00V, VRTF = 0.00V, f

SOURCE

TEST

LEVEL

(tD)

CLK
CLK

CONDITIONSPARAMETER

= 100 kHzIntegral Linearity
= 100 kHzDifferential Linearity

Digital Output Current ...........................................0mA to -30mA

Operating Temperature Range ...........................-25°C to +85°C

Junction Temperature......................................................+150°C

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

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

= 150MHz, 50% Duty Cycle, TA= T

CLK

MAX1114A

MIN TYP MAX

VI
VI

GuaranteedNo missing codes

IV
IV
VI

V
V

VI

V
V
V

VI

V

VI

V
V
V
V
V

MAX1114B

MIN TYP MAX

-0.95 ±0.80 +0.95

-0.95 +0.95
Guaranteed

-30 +30

-30 +30

-2.0 0.0
10
15

250 500

1,000

210
335

100 200 300

10

125 150

2.4
2

2.0
5

1.5

MIN

to T

MAX

UNITS

LSB-0.75 ±0.60 +0.75f
LSB-0.75 +0.75f

mV-30 +30Offset Error VRT
mV-30 +30Offset Error VRB

V-2.0 0.0Input Voltage Range
pF10Over full input rangeInput Capacitance
kΩ15Input Resistance

µA250 500Input Current
V/µs1,000Input Slew Rate
MHz210VIN = full scaleLarge-Signal Bandwidth
MHz335IN = 500mVp-pSmall-Signal Bandwidth

Ω100 200 300Ladder Resistance

MHz10Reference Bandwidth

Msps125 150Maximum Sample Rate

ns2.4Clock to Data Delay

ps/°C2Output Delay Tempco

ns2.0

ps5Aperture Jitter

ns1.5Acquisition Time

,

2 _______________________________________________________________________________________

8-Bit, 150Msps Flash ADC

ELECTRICAL CHARACTERISTICS (continued)

VEE= -5.2V, R
unless otherwise noted.)

DYNAMIC PERFORMANCE

Signal-to-Noise Ratio

Total Harmonic Distortion

Signal-to-Noise and
Distortion (SINAD)

DIGITAL INPUTS

Digital Input High Voltage

(MINV, LINV)

Digital Input Low Voltage

(MINV, LINV)

Clock Synchronous
Input Currents

DIGITAL OUTPUTS

POWER SUPPLY REQUIREMENTS

TEST LEVEL CODES

All electrical characteristics are subject to the
following conditions:

All parameters having min/max specifications are
guaranteed. The Test Level column indicates the
specific device testing actually performed during
production and Quality Assurance inspection.
Any blank section in the data column indicates
that the specification is not tested at the specified
condition.

Unless otherwise noted, all tests are pulsed;
therefore, T

= TC= TA.

j

= 50Ω, VRBF = -2.00V, VR2 = -1.00V, VRTF = 0.00V, f

SOURCE

CONDITIONSPARAMETER

fIN= 50MHz

PWL

PWH

TEST

LEVEL

TEST LEVEL

I
II

III
IV

V

VI

VI
VI
VI
VI
VI
VI

VI

VI

V

VI
VI

VI
VI

V

I
I

= 150MHz, 50% Duty Cycle, TA= T

CLK

MAX1114A

MIN TYP MAX

46 48fIN= 3.58MHz
42 46

-48 -52fIN= 3.58MHz

-40 -44fIN= 50MHz
45 48fIN= 3.58MHz
39 42fIN= 50MHz

TEST PROCEDURE

100% production tested at the specified temperature.
100% production tested at T

specified temperatures.
QA sample tested only at the specified temperatures.
Parameter is guaranteed (but not tested) by design and

characterization data.
Parameter is a typical value for information purposes only.
100% production tested at T

over specified temperature range.

MAX1114B

MIN TYP MAX

45 47
40 44

-46 -50

-39 -43
43 46
37 40

-1.1 -0.7

-2.0 -1.5

40

43
43

-1.1

2.4

425 550

2.2 2.9

= +25°C, and sample tested at the

A

= +25°C. Parameter is guaranteed

A

MIN

-1.5

to T

UNITS

dB

dB

dB
dB

µA40

ns43Clock Low Width, T
ns43Clock High Width, T

ns2.4

mA425 550TA= +25°CSupply Current

W2.2 2.9TA= +25°CPower Dissipation

MAX1114

,

MAX

V-1.1 -0.7

V-2.0 -1.5

V-1.150Ω to -2VDigital Output High Voltage
V-1.550Ω to -2VDigital Output Low Voltage

_______________________________________________________________________________________

3

8-Bit, 150Msps Flash ADC

__________________________________________Typical Operating Characteristics

(Circuit of Figure 1, TA= +25°C, unless otherwise noted.)

52

MAX1114

fs = 125Msps

50
48
46

44

42

SNR (dB)

40
38



36
34

1 10 100

SIGNAL-TO-NOISE AND DISTORTION

52

fs = 125Msps

50
48
46
44
42

SINAD (dB)

40
38



36
34

1 10 100

SIGNAL-TO-NOISE RATIO

vs. INPUT FREQUENCY

INPUT FREQUENCY (MHz)

vs. INPUT FREQUENCY

INPUT FREQUENCY (MHz)

MAX1114 -01

MAX1114 -03

TOTAL HARMONIC DISTORTION

vs. INPUT FREQUENCY

52

fs = 125Msps

50
48
46
44
42

THD (dB)

40
38



36
34

1 10 100

INPUT FREQUENCY (MHz)

MAX1114 -02

SNR, THD, SINAD

vs. TEMPERATURE

50

SNR

45

40

SNR, THD, SINAD (dB)

35

fs = 125Msps

= 50MHz

f

IN

30

-40 -20

80

0

TEMPERATURE (°C)

THD

SINAD

20 40

MAX1114 -04

60

4 _______________________________________________________________________________________