MAXIM MAX1183 Technical data

General Description

The MAX1183 is a 3V, dual 10-bit analog-to-digital con­verter (ADC) featuring fully differential wideband track­and-hold (T/H) inputs, driving two pipelined, nine-stage
ADCs. The MAX1183 is optimized for low-power, high
dynamic performance applications in imaging, instrumen­tation, and digital communication applications. This ADC
operates from a single 2.7V to 3.6V supply, consuming
only 120mW while delivering a typical signal-to-noise ratio
(SNR) of 59.6dB at an input frequency of 20MHz and a
sampling rate of 40Msps. The T/H driven input stages
incorporate 400MHz (-3dB) input amplifiers. The convert­ers may also be operated with single-ended inputs. In
addition to low operating power, the MAX1183 features a

2.8mA sleep mode as well as a 1µA power-down mode to
conserve power during idle periods.

An internal 2.048V precision bandgap reference sets
the full-scale range of the ADC. A flexible reference
structure allows the use of this internal or an externally
derived reference, if desired for applications requiring
increased accuracy or a different input voltage range.

The MAX1183 features parallel, CMOS-compatible
three-state outputs. The digital output format can be set
to two’s complement or straight offset binary through a
single control pin. The device provides for a separate
output power supply of 1.7V to 3.6V for flexible interfac­ing. The MAX1183 is available in a 7mm ✕7mm, 48-pin
TQFP package, and is specified for the extended
industrial (-40°C to +85°C) temperature range.

Pin-compatible lower and higher speed versions of the
MAX1183 are also available. See Table 2 at end of data
sheet for a list of pin-compatible versions. Refer to the
MAX1180 data sheet for 105Msps, the MAX1181 data
sheet for 80Msps, the MAX1182 data sheet for 65Msps,
and the MAX1184 data sheet for 20Msps. In addition to
these speed grades, this family includes a multiplexed
output version, for which digital data is presented time­interleaved and on a single, parallel 10-bit output port.

Applications

High-Resolution Imaging

I/Q Channel Digitization

Multichannel IF Sampling

Instrumentation

Video Application

Ultrasound

Features

♦ Single 3V Operation
♦ Excellent Dynamic Performance:

59.6dB SNR at f

IN

= 20MHz

73dB SFDR at fIN= 20MHz

♦ Low Power:

40mA (Normal Operation)

2.8mA (Sleep Mode)
1µA (Shutdown Mode)

♦ 0.02dB Gain and 0.25° Phase Matching
♦ Wide ±1V

P-P

Differential Analog Input Voltage

Range

♦ 400MHz -3dB Input Bandwidth
♦ On-Chip 2.048V Precision Bandgap Reference
♦ User-Selectable Output Format—Two’s

Complement or Offset Binary

♦ 48-Pin TQFP Package with Exposed Paddle for

Improved Thermal Dissipation

MAX1183

Dual 10-Bit, 40Msps, 3V, Low-Power ADC with

Internal Reference and Parallel Outputs

________________________________________________________________ Maxim Integrated Products 1

Pin Configuration

Ordering Information

19-2173; Rev 1; 7/06

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Functional Diagram appears at end of data sheet.

*EP = Exposed paddle.
+Denotes lead-free package.

NOTE: THE PIN 1 INDICATOR FOR LEAD-FREE PACKAGE IS REPLACED BY A “+” SIGN.

PART TEMP RANGE PIN-PACKAGE

MAX1183ECM -40°C to +85°C 48 TQFP-EP*

MAX1183ECM+ -40°C to +85°C 48 TQFP-EP*

REFN

REFP

REFIN

REFOUT

D9A

D8A

D7A

D6A

D5A

D4A

D3A

D2A

4847464544434241403938

COM

1

V

2

DD

GND

3

INA+

4

INA-

5

V

6

DD

GND

7

INB-

8

INB+

9

GND

10

V

11

DD

CLK

12

EP

1314151617181920212223

GND

DD

DD

V

V

MAX1183

PD

T/B

GND

SLEEP

48 TQFP-EP

OE

D9B

D8B

D7B

37

24

D6B

36

D1A
D0A

35

OGND

34

OV

33

DD

OV

32

DD

OGND

31

D0B

30

D1B

29

D2B

28

D3B

27

D4B

26

D5B

25

MAX1183

Dual 10-Bit, 40Msps, 3V, Low-Power ADC with
Internal Reference and Parallel Outputs

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VDD= 3V, OVDD= 2.5V, 0.1µF and 1.0µF capacitors from REFP, REFN, and COM to GND, REFOUT connected to REFIN through a
10kΩ resistor, V

IN

= 2V

P-P

(differential with respect to COM), CL= 10pF at digital outputs (Note 1), f

CLK

= 40MHz, TA= T

MIN

to T

MAX

,

unless otherwise noted. Typical values are at T

A

= +25°C.) (Note 2)

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

VDD, OVDDto GND .............................................. -0.3V to +3.6V

OGND to GND.......................................................-0.3V to +0.3V

INA+, INA-, INB+, INB- to GND ...............................-0.3V to V

DD

REFIN, REFOUT, REFP, REFN,

COM, CLK to GND .................................-0.3V to (V

DD

+ 0.3V)

OE, PD, SLEEP, T/B

D9A–D0A, D9B–D0B to OGND ...........-0.3V to (OV

DD

+ 0.3V)

Continuous Power Dissipation (T

A

= +70°C)

48-Pin TQFP-EP

(derate 30.4mW/°C above +70°C)..........................2430mW

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

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

Storage Temperature Range .............................-60°C to +150°C

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

DC ACCURACY

Resolution 10 Bits

Integral Nonlinearity INL fIN = 7.51MHz ±0.5 ±1.7 LSB

Differential Nonlinearity DNL fIN = 7.51MHz, no missing codes guaranteed ±0.25 ±1.0 LSB

Offset Error <±1 ±1.8 % FS

Gain Error 0±2% FS

ANALOG INPUT

Differential Input Voltage Range V

Common-Mode Input Voltage
Range

Input Resistance R

Input Capacitance C

CONVERSION RATE

Maximum Clock Frequency f

Data Latency 5

DYNAMIC CHARACTERISTICS

Signal-to-Noise Ratio
(Note 3)

Signal-to-Noise and Distortion
(Note 3)

Spurious-Free Dynamic Range
(Note 3)

Total Harmonic Distortion
(First 4 harmonics) (Note 3)

Third-Harmonic Distortion
(Note 3)

Intermodulation Distortion IMD

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

DIFF

V

CLK

SNR

SINAD

SFDR

THD

HD3

Differential or single-ended inputs ±1.0 V

CM

Switched capacitor load 50 kΩ

IN

IN

f

f

f

f

f

f

f

f

f

f

f
f
(Note 4)

= 7.51MHz, TA = +25°C 57.3 59.6

INA or B

= 20MHz, TA = +25°C 56.8 59.6

INA or B

= 7.51MHz, TA = +25°C 57 59.4

INA or B

= 20MHz, TA = +25°C 56.5 59

INA or B

= 7.51MHz, TA = +25°C 65 76

INA or B

= 20MHz, TA = +25°C 65 73

INA or B

= 7.51MHz, TA = +25°C -73 -64

INA or B

= 20MHz, TA = +25°C -73 -63

INA or B

= 7.51MHz -76

INA or B

= 20MHz -73

INA or B

= 11.6066MHz at -6.5dBFS,

INA or B

= 13.3839MHz at -6.5dBFS

INA or B

VDD/2

±0.5

5pF

40 MHz

-78 dBc

V

Clock

Cycles

dB

dB

dBc

dBc

dB

MAX1183

Dual 10-Bit, 40Msps, 3V, Low-Power ADC with

Internal Reference and Parallel Outputs

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(VDD= 3V, OVDD= 2.5V, 0.1µF and 1.0µF capacitors from REFP, REFN, and COM to GND, REFOUT connected to REFIN through a
10kΩ resistor, V

IN

= 2V

P-P

(differential with respect to COM), CL= 10pF at digital outputs (Note 1), f

CLK

= 40MHz, TA= T

MIN

to T

MAX

,

unless otherwise noted. Typical values are at T

A

= +25°C.) (Note 2)

Small-Signal Bandwidth Input at -20dBFS, differential inputs 500 MHz

Full-Power Bandwidth FPBW Input at -0.5dBFS, differential inputs 400 MHz

Aperture Delay t

Aperture Jitter t

Overdrive Recovery Time For 1.5 x full-scale input 2 ns

Differential Gain ±1 %

Differential Phase ±0.25 Degrees

Output Noise INA+ = INA- = INB+ = INB- = COM 0.2 LSB

INTERNAL REFERENCE

Reference Output Voltage REFOUT

Reference Temperature
Coefficient

Load Regulation 1.25 mV/mA

BUFFERED EXTERNAL REFERENCE (V

REFIN Input Voltage V

Positive Reference Output
Voltage

Negative Reference Output
Voltage

Differential Reference Output
Voltage Range

REFIN Resistance R

Maximum REFP, COM
Source Current

Maximum REFP, COM
Sink Current

Maximum REFN Source Current I

Maximum REFN Sink Current I

UNBUFFERED EXTERNAL REFERENCE (V

REFP, REFN Input Resistance

Differential Reference Input
Voltage Range

COM Input Voltage Range V

REFP Input Voltage V

REFN Input Voltage V

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

TC

REFIN

V

REFP

V

REFN

∆V

REFIN

I

SOURCE

I

SINK

SOURCE

SINK

R

REFP

R

REFN

∆V

COM

REFP

REFN

AD

AJ

REF

= 2.048V)

REFIN

REF

∆V

REFIN

,

Measured between REFP and COM and
REFN and COM

REF

∆V

REF

= V

REFP

- V

REFN

= AGND, reference voltage applied to REFP, REFN, and COM)

REF

= V

REFP

- V

REFN

1ns

2ps

2.048
±3%

60

ppm/

2.048 V

2.012 V

0.988 V

0.95 1.024 1.10 V

>50 MΩ

5mA

-250 µA

250 µA

-5 mA

4kΩ

1.024
±10%

VDD/2
±10%

V

+

COM

/2

∆V

REF

V

-

COM

/2

∆V

REF

RMS

RMS

V

°C

V

V

V

V

MAX1183

Dual 10-Bit, 40Msps, 3V, Low-Power ADC with
Internal Reference and Parallel Outputs

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(VDD= 3V, OVDD= 2.5V, 0.1µF and 1.0µF capacitors from REFP, REFN, and COM to GND, REFOUT connected to REFIN through a
10kΩ resistor, V

IN

= 2V

P-P

(differential with respect to COM), CL= 10pF at digital outputs (Note 1), f

CLK

= 40MHz, TA= T

MIN

to T

MAX

,

unless otherwise noted. Typical values are at T

A

= +25°C.) (Note 2)

DIGITAL INPUTS (CLK, PD, OE, SLEEP, T/B)

Input High Threshold V

Input Low Threshold V

Input Hysteresis V

Input Leakage

Input Capacitance C

DIGITAL OUTPUTS (D9A–D0A, D9B–D0B)

Output Voltage Low V

Output Voltage High V

Three-State Leakage Current I

Three-State Leakage
Capacitance

POWER REQUIREMENTS

Analog Supply Voltage Range V

Output Supply Voltage Range OV

Analog Supply Current I

Output Supply Current I

Power Dissipation PDISS

Power-Supply Rejection Ratio PSRR

TIMING CHARACTERISTICS

CLK Rise to Output Data Valid t

Output Enable Time t

Output Disable Time t

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

CLK

IH

PD, OE, SLEEP, T/B

CLK

IL

PD, OE, SLEEP, T/B

HYST

I

I

LEAK

C

OUT

VDD

IH

IL

OL

OH

DD

VIH = OV

or VDD (CLK) ±5

DD

VIL = 0V ±5

IN

I

= -200µA 0.2 V

SINK

I

OE = OV

OE = OV

DD

Operating, f

SOURCE

= 200µA

DD

DD

INA or B

= 20MHz at -0.5dBFS 40 60

Sleep mode 2.8
Shutdown, clock idle, PD = OE = OV

DD

Operating, CL = 15pF,

= 20MHz at -0.5dBFS

f

OVDD

INA or B

Sleep mode 100
Shutdown, clock idle, PD = OE = OV

Operating, f

= 20MHz at -0.5dBFS 120 180

INA or B

DD

0.8 x
V

DD

0.8 x

OV

DD

0.2 x
V

DD

0.2 x

OV

DD

0.1 V

5pF

OV

DD

- 0.2

±10 µA

5pF

2.7 3 3.6 V

1.7 2.5 3.6 V

115µA

5.8 mA

210

Sleep mode 8.4
Shutdown, clock idle, PD = OE = OV

DD

345µW

Offset ±0.2 mV/V

Gain ±0.1 %V

DO

ENABLE

DISABLE

Figure 3 (Note 5) 5 8 ns

Figure 4 10 ns

Figure 4 1.5 ns

V

V

µA

V

mA

µA

mW

MAX1183

Dual 10-Bit, 40Msps, 3V, Low-Power ADC with

Internal Reference and Parallel Outputs

_______________________________________________________________________________________ 5

ELECTRICAL CHARACTERISTICS (continued)

(VDD= 3V, OVDD= 2.5V, 0.1µF and 1.0µF capacitors from REFP, REFN, and COM to GND, REFOUT connected to REFIN through a
10kΩ resistor, V

IN

= 2V

P-P

(differential with respect to COM), CL= 10pF at digital outputs (Note 1), f

CLK

= 40MHz, TA= T

MIN

to T

MAX

,

unless otherwise noted. Typical values are at T

A

= +25°C.) (Note 2)

Note 1: Equivalent dynamic performance is obtainable over full OVDDrange with reduced CL.
Note 2: Specifications at ≥ +25°C are guaranteed by production test and < +25°C are guaranteed by design and characterization.
Note 3: SNR, SINAD, THD, SFDR, and HD3 are based on an analog input voltage of -0.5dBFS referenced to a 1.024V full-scale

input voltage range.

Note 4: Intermodulation distortion is the total power of the intermodulation products relative to the individual carrier. This number is

6dB better, if referenced to the two-tone envelope.

Note 5: Digital outputs settle to V

IH

, VIL. Parameter guaranteed by design.

Note 6: With REFIN driven externally, REFP, COM, and REFN are left floating while powered down.

Typical Operating Characteristics

(VDD= 3V, OVDD= 2.5V, V

REFIN

= 2.048V, differential input at -0.5dBFS, f

CLK

= 40.0006MHz, CL≈ 10pF, TA= +25°C, unless

otherwise noted.)

-100

-80

-90

-60

-70

-40

-50

-30

-10

-20

0

046821012141816 20

FFT PLOT CHA (DIFFERENTIAL INPUT,

8192-POINT DATA RECORD)

MAX1183 toc01

ANALOG INPUT FREQUENCY (MHz)

AMPLITUDE (dB)

f

CLK

= 40.0006MHz

f

INA

= 7.5343MHz

f

INB

= 6.1475MHz

A

INA

= -0.498dBFS

HD3

HD2

CHA

-100

-80

-90

-60

-70

-40

-50

-30

-10

-20

0

0 46821012141816 20

FFT PLOT CHB (DIFFERENTIAL INPUT,

8192-POINT DATA RECORD)

MAX1183 toc02

ANALOG INPUT FREQUENCY (MHz)

AMPLITUDE (dB)

f

CLK

= 40.0006MHz

f

INB

= 6.1475MHz

f

INA

= 7.5343MHz

A

INB

= -0.534dBFS

HD3

HD2

CHB

-100

-80

-90

-60

-70

-40

-50

-30

-10

-20

0

0 46821012141816 20

FFT PLOT CHA (DIFFERENTIAL INPUT,

8192-POINT DATA RECORD)

MAX1183 toc03

ANALOG INPUT FREQUENCY (MHz)

AMPLITUDE (dB)

f

CLK

= 40.0006MHz

f

INA

= 24.9662MHz

f

INB

= 19.888MHz

A

INA

= -0.552dBFS

HD3

HD2

CHA

CLK Pulse Width High t

CLK Pulse Width Low t

Wake-Up Time t

CHANNEL-TO-CHANNEL MATCHING

Crosstalk f

Gain Matching f

Phase Matching f

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

WAKE

CH

CL

Figure 3, clock period: 25ns

Figure 3, clock period: 25ns

Wake up from sleep mode (Note 6) 0.41

Wake up from shutdown (Note 6) 1.5

= 20MHz at -0.5dBFS -70 dB

INA or B

= 20MHz at -0.5dBFS 0.02 ±0.2 dB

INA or B

= 20MHz at -0.5dBFS 0.25 Degrees

INA or B

12.5

±3.8

12.5

±3.8

ns

ns

µs

MAX1183

Dual 10-Bit, 40Msps, 3V, Low-Power ADC with
Internal Reference and Parallel Outputs

6 _______________________________________________________________________________________

Typical Operating Characteristics (continued)

(VDD= 3V, OVDD= 2.5V, V

REFIN

= 2.048V, differential input at -0.5dBFS, f

CLK

= 40.0006MHz, CL≈ 10pF, TA= +25°C, unless

otherwise noted.)

FFT PLOT CHB (DIFFERENTIAL INPUT,

8192-POINT DATA RECORD)

0

f

= 40.0006MHz

CLK

-10

= 24.9662MHz

f

INA

= 19.888MHz

f

INB

-20

= -0.525dBFS

A

INB

-30

-40

-50

-60

AMPLITUDE (dB)

-70

HD2

-80

-90

-100
046821012141816 20

ANALOG INPUT FREQUENCY (MHz)

TWO-TONE IMD PLOT (DIFFERENTIAL INPUT,

8192-POINT DATA RECORD)

MAX1183 toc04

0

f

= 40.0006MHz

CLK

-10

= 11.6066MHz

f

IN1

= 13.3834MHz

f

-20

IN2

= A

= -6.5dBFS

A

IN1

-30

-40

-50

-60

AMPLITUDE (dB)

-70

-80

-90

-100

IN2

IM2

0 46821012141816 20

ANALOG INPUT FREQUENCY (MHz)

CHB

HD3

IM3

SIGNAL-TO-NOISE RATIO vs.

ANALOG INPUT FREQUENCY

61

60

IM2

MAX1183 toc05

59

58

SNR (dB)

57

56

55

0 1020304050607080

CHB

ANALOG INPUT FREQUENCY (MHz)

f

IN2

f

IN1

IM3

CHA

MAX1183 toc06

SIGNAL-TO-NOISE PLUS DISTORTION

vs. ANALOG INPUT FREQUENCY

62

60

58

SINAD (dB)

56

54

CHB

0 1020304050607080

ANALOG INPUT FREQUENCY (MHz)

CHA

FULL-POWER INPUT BANDWIDTH vs.

ANALOG INPUT FREQUENCY, SINGLE-ENDED

6

4

2

0

GAIN (dB)

-2

-4

-6

MAX1183 toc07

MAX1183 toc10

TOTAL HARMONIC DISTORTION vs.

ANALOG INPUT FREQUENCY

-50

CHA

-60

-70

THD (dBc)

-80

-90

-100
0 1020304050607080

ANALOG INPUT FREQUENCY (MHz)

CHB

SMALL-SIGNAL INPUT BANDWIDTH vs.

ANALOG INPUT FREQUENCY, SINGLE-ENDED

6

4

2

0

GAIN (dB)

-2

-4

-6

VIN = 100mV

P-P

MAX1183 toc08

MAX1183 toc11

SPURIOUS-FREE DYNAMIC RANGE vs.

ANALOG INPUT FREQUENCY

90

80

70

SFDR (dBc)

60

50

40

0 1020304050607080

ANALOG INPUT FREQUENCY (MHz)

CHB

CHA

SIGNAL-TO-NOISE RATIO vs.

ANALOG INPUT POWER (f

65

60

55

50

SNR (dB)

45

40

= 19.888MHz)

IN

MAX1183 toc09

MAX1183 toc12

-8
1 10 100 1000

ANALOG INPUT FREQUENCY (MHz)

-8
1 10 100 1000

ANALOG INPUT FREQUENCY (MHz)

35

-20 0
ANALOG INPUT POWER (dBFS)

-12-16 -8 -4