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MAX1420ECM+D

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17
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.
General Description
The MAX1420, 3.3V, 12-bit analog-to-digital converter
(ADC) features a fully-differential input, pipelined, 12-
stage ADC architecture with wideband track-and-hold
(T/H) and digital error correction, incorporating a fully-
differential signal path. The MAX1420 is optimized for
low-power, high dynamic performance applications in
imaging and digital communications. The converter
operates from a single 3.3V supply, and consumes only
221mW. The fully-differential input stage has a small
signal -3dB bandwidth of 400MHz and may be operat-
ed with single-ended inputs.
An internal 2.048V precision bandgap reference sets
the full-scale range of the ADC. A flexible reference
structure accommodates an internal reference, or
externally applied buffered or unbuffered reference for
applications that require increased accuracy and a dif-
ferent input voltage range.
In addition to low operating power, the MAX1420 fea-
tures two power-down modes: reference power-down
and shutdown mode. In reference power-down, the
internal bandgap reference is deactivated, which
results in a typical 2mA supply current reduction. A full
shutdown mode is available to maximize power savings
during idle periods.
The MAX1420 provides parallel, offset binary, CMOS-
compatible three-state outputs.
The MAX1420 is available in a 7mm x 7mm x 1.4mm,
48-pin TQFP package, and is specified over the com-
mercial (0°C to +70°C) and the extended industrial
(-40°C to +85°C) temperature range.
Pin-compatible lower speed versions of the MAX1420
are also available. Please refer to the MAX1421 data
sheet for 40Msps and the MAX1422 data sheet for
20Msps.
________________________Applications
Medical Ultrasound Imaging
CCD Pixel Processing
IR Focal Plane Arrays
Radar
IF and Baseband Digitization
Features
♦ 3.3V Single Power Supply
♦ 67dB SNR at f
IN
= 5MHz
♦ 66dB SNR at f
IN
= 15MHz
♦ Internal 2.048V Precision Bandgap Reference
♦ Differential, Wideband Input T/H Amplifier
♦ Power-Down Modes
218mW (Reference Shutdown Mode)
10µW (Shutdown Mode)
♦ Space-Saving 48-Pin TQFP Package
MAX1420
12-Bit, 60Msps, 3.3V, Low-Power ADC
with Internal Reference
________________________________________________________________ Maxim Integrated Products 1
D9
D8
D7
D6
DV
DD
DV
DD
DGND
DGND
D5
D4
D3
D2
AGND
AV
DD
AV
DD
AGND
AGND
INP
INN
AGND
AGND
AV
DD
AV
DD
AGND
1
2
3
4
5
6
7
8
9
10
11
12
36
35
34
33
32
31
30
29
28
27
26
25
48-TQFP
MAX1420
AGND
AV
DD
AV
DD
AGND
CLK
CLK
AGND
AV
DD
DV
DD
DGND
D0
D1
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
AGND
AV
DD
CML
REFN
REFP
REFIN
AV
DD
AGND
PD
OE
D11
D10
Pin Configuration
19-1981; Rev 1; 5/04
EVALUATION KIT
AVAILABLE
Ordering Information
PART TEMP RANGE PIN-PACKAGE
MAX1420CCM
0°C to +70°C 48 TQFP
MAX1420ECM -40°C to +85°C 48 TQFP
Functional diagram appears at end of data sheet.
MAX1420
12-Bit, 60Msps, 3.3V, Low-Power ADC
with Internal Reference
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
AVDD
= V
DVDD
= 3.3V, AGND = DGND = 0, V
IN
= ±1.024V, differential input voltage at -0.5dBFS, internal reference, f
CLK
=
62.5MHz (50% duty cycle); digital output load C
L
= 10pF, ≥+25°C guaranteed by production test, <+25°C guaranteed by design and
characterization. Typical values are at T
A
= +25°C.)
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.
PARAMETER
SYMBOL
CONDITIONS MIN
TYP MAX
UNITS
DC ACCURACY
Resolution RES 12 Bits
T
A
= +25°C, no missing codes -1 1
Differential Nonlinearity DNL
T
A
= T
MIN
to T
MAX
±0.5
LSB
Integral Nonlinearity INL T
A
= T
MIN
to T
MAX
±2
LSB
Mid-scale Offset MSO -3 .75 3
%FSR
Mid-scale Offset Temperature
Coefficient
MSOTC
3 x 10
-4
%/°C
Internal reference (Note 1) -5
±0.1
5
%FSR
E xter nal r efer ence ap p l i ed to RE FIN
( N ote 2)
-5
±0.2
5
Gain Error GE
E xter nal r efer ence ap p li ed to RE FP ,
CML, and REFN (Note 3)
-1.5 1.5
Gain Error Temperature
Coefficient
GETC
External reference applied to REFP, CML,
and REFN (Note 3)
100 x 106
%/°C
DYNAMIC PERFORMANCE (f
CLK
= 60MHz, 4096-point FFT)
f
IN
= 5MHz 67
Signal-to-Noise Ratio SNR
f
IN
= 15MHz, T
A
=+25°C 62 66
dB
f
IN
= 5MHz 72
Spurious-Free Dynamic Range SFDR
f
IN
= 15MHz, T
A
=+25°C 64 72
dBc
f
IN
= 5MHz -70
Total Harmonic Distortion THD
f
IN
= 15MHz, T
A
=+25°C -69 -62
dBc
f
IN
= 5MHz
64.5
Signal-to-Noise and Distortion SINAD
f
IN
= 15MHz, T
A
=+25°C 58.5 63
dB
f
IN
= 5MHz
10.4
Effective Number of Bits ENOB
f
IN
= 15MHz
10.2
Bits
Two-Tone
Intermodulation Distortion
IMD
f
IN1
= 11.566036MHz,
f
IN2
= 13.4119138MHz (Note 4)
-74
dBc
AV
DD
, DV
DD
to AGND..............................................-0.3V to +4V
DV
DD
, AV
DD
to DGND..............................................-0.3V to +4V
DGND to AGND.....................................................-0.3V to +0.3V
INP, INN, REFP, REFN, REFIN,
CML, CLK,
CLK ....................(AGND - 0.3V) to (AV
DD
+ 0.3V)
D0–D11, OE, PD .....................(DGND - 0.3V) to (DV
DD
+ 0.3V)
Continuous Power Dissipation (T
A
= +70°C)
48-Pin TQFP (derate 21.7mW/°C above +70°C)........1789mW
Operating Temperature Ranges
MAX1420CCM ....................................................0°C to +70°C
MAX1420ECM .................................................-40°C to +85°C
Maximum Junction Temperature .....................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
MAX1420
12-Bit, 60Msps, 3.3V, Low-Power ADC
with Internal Reference
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
AVDD
= V
DVDD
= 3.3V, AGND = DGND = 0, V
IN
= ±1.024V, differential input voltage at -0.5dBFS, internal reference, f
CLK
=
62.5MHz (50% duty cycle); digital output load C
L
= 10pF, ≥+25°C guaranteed by production test, <+25°C guaranteed by design and
characterization. Typical values are at T
A
= +25°C.)
PARAMETER
SYMBOL
CONDITIONS MIN
TYP MAX UNITS
Differential Gain DG ±1%
Differential Phase DP
±0.25 Degrees
ANALOG INPUTS (INP, INN, CML)
Input Resistance R
IN
Either input to ground 22 kΩ
Input Capacitance C
IN
Either input to ground 4 pF
Common-Mode Input Level
(Note 5)
V
CML
V
AVDD
x
0.5
V
Common-Mode Input Voltage
Range (Note 5)
V
CMVR
V
CML
± 5%
V
Differential Input Range V
IN
V
INP
- V
INN
(Note 6)
±V
DIFF
V
Small-Signal Bandwidth BW
-3dB
(Note 7) 400
MHz
Large-Signal Bandwidth
FPBW
-3dB
(Note 7) 150
MHz
Overvoltage Recovery OVR 1.5
x
FS input 1
Clock
cycles
INTERNAL REFERENCE (REFIN bypassed with 0.22µF in parallel with 1nF)
Common-Mode Reference
Voltage
V
CML
At CML
V
AVDD
_
0.5
V
Positive Reference Voltage V
REFP
At REFP
V
CML
+ 0.512
V
Negative Reference Voltage V
REFN
At REFN
V
CML
- 0.512
V
Differential Reference Voltage V
DIFF
(Note 6) 1.024 ±5% V
Differential Reference
Temperature Coefficient
REFTC
±100 ppm/°C
EXTERNAL REFERENCE (V
REFIN
= 2.048V)
REFIN Input Resistance R
IN
(Note 8) 5 kΩ
REFIN Input Capacitance C
IN
10 pF
REFIN Reference Input Voltage V
REFIN
2.048
±10%
V
Differential Reference Voltage V
DIFF
(Note 6)
0.92
x
V
REFIN
/2
V
REFIN
/2
1.08
x
V
REFIN
/2
V
EXTERNAL REFERENCE (V
REFIN
= 0, reference voltage applied to REFP, REFN, and CML)
REFP, REFN, CML Input Current
I
IN
-200 200 µA
REFP, REFN, CML Input
Capacitance
C
IN
15 pF
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17

MAX1420ECM+D

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Buy MAX1420ECM+D
Manufacturer:
Maxim Integrated
Description:
IC ADC 12BIT 60MSPS 48LQFP
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