MAXIM MAX1214N Technical data
General Description
The MAX1214N is a monolithic, 12-bit, 210Msps analog-to-digital converter (ADC) optimized for outstanding
dynamic performance at high-IF frequencies beyond
300MHz. The product operates with conversion rates
up to 210Msps while consuming only 799mW.
At 210Msps and an input frequency up to 100MHz, the
MAX1214N achieves an 81.3dBc spurious-free dynamic range (SFDR) with excellent 67dB signal-to-noise
ratio (SNR) that remains flat (within 2dB) for input tones
up to 250MHz. This makes it ideal for wideband applications such as communications receivers, cable-head
end receivers, and power-amplifier predistortion in cellular base-station transceivers.
The MAX1214N operates from a single 1.8V power supply. The analog input is designed for AC-coupled differential or single-ended operation. The ADC also features
a selectable on-chip divide-by-2 clock circuit that
accepts clock frequencies as high as 420MHz. A lowvoltage differential signal (LVDS) sampling clock is recommended for best performance. The converter
provides LVDS-compatible digital outputs with data format selectable to be either two’s complement or offset
binary.
The MAX1214N is available in a 68-pin QFN package
with exposed paddle (EP) and is specified over the
industrial (-40°C to +85°C) temperature range.
See the Pin-Compatible Versions table for a complete
selection of 8-bit, 10-bit, and 12-bit high-speed ADCs in
this family.
Applications
Base-Station Power-Amplifier Linearization
Cable-Head End Receivers
Wireless and Wired Broadband Communications
Communications Test Equipment
Radar and Satellite Subsystems
Features
♦ 210Msps Conversion Rate
♦ Excellent Low-Noise Characteristics
SNR = 67dB at fIN= 100MHz
SNR = 65dB at fIN= 250MHz
♦ Excellent Dynamic Range
SFDR = 81.3dBc at fIN= 100MHz
SFDR = 84.9dBc at fIN= 250MHz
♦ Single 1.8V Supply
♦ 799mW Power Dissipation at f
SAMPLE
= 210Msps
and fIN= 100MHz
♦ On-Chip Track-and-Hold Amplifier
♦ Internal 1.24V-Bandgap Reference
♦ On-Chip Selectable Divide-by-2 Clock Input
♦ LVDS Digital Outputs with Data Clock Output
♦ MAX1214NEVKIT Available
MAX1214N
1.8V, Low-Power, 12-Bit, 210Msps
ADC for Broadband Applications
________________________________________________________________ Maxim Integrated Products 1
19-3866; Rev 0; 4/06
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.
EVALUATION KIT
AVAILABLE
Pin-Compatible Versions
PART
RESOLUTION
(BITS)
SPEED
GRADE
(Msps)
ON-CHIP
BUFFER
MAX1121 8 250 Yes
MAX1122 10 170 Yes
MAX1123 10 210 Yes
MAX1124 10 250 Yes
MAX1213 12 170 Yes
MAX1214 12 210 Yes
MAX1215 12 250 Yes
MAX1213N 12 170 No
MAX1214N 12 210 No
MAX1215N 12 250 No
Pin Configuration appears at end of data sheet.
PART
TEMP RANGE
PIN-
PKG
CODE
MAX1214NEGK-D
G6800-4
MAX1214NEGK+D
G6800-4
Ordering Information
*EP = Exposed paddle.
+Denotes lead-free package.
D = Dry pack.
PACKAGE
-40°C to +85°C 68 QFN-EP*
-40°C to +85°C 68 QFN-EP*
MAX1214N
1.8V, Low-Power, 12-Bit, 210Msps
ADC for Broadband Applications
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(AV
CC
= OV
CC
= 1.8V, AGND = OGND = 0, f
SAMPLE
= 210MHz, differential clock input drive, 0.1µF capacitor on REFIO, internal ref-
erence, digital output pins differential R
L
= 100Ω. Limits are for TA= -40°C to +85°C, unless otherwise noted. Typical values are at
T
A
= +25°C.) (Note 1)
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.
AVCCto AGND ......................................................-0.3V to +2.1V
OV
CC
to OGND .....................................................-0.3V to +2.1V
AV
CC
to OVCC.......................................................-0.3V to +2.1V
AGND to OGND ....................................................-0.3V to +0.3V
INP, INN to AGND....................................-0.3V to (AV
CC
+ 0.3V)
All Digital Inputs to AGND........................-0.3V to (AV
CC
+ 0.3V)
REFIO, REFADJ to AGND ........................-0.3V to (AV
CC
+ 0.3V)
All Digital Outputs to OGND ....................-0.3V to (OV
CC
+ 0.3V)
Current into Any Pin..........................................................±50mA
Continuous Power Dissipation (T
A
= +70°C, multilayer board)
68-Pin QFN-EP (derate 41.7mW/°C above +70°C)....3333mW
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
PARAMETER
CONDITIONS
UNITS
DC ACCURACY
Resolution 12 Bits
Integral Nonlinearity INL f
IN
= 10MHz (Note 2)
LSB
Differential Nonlinearity DNL No missing codes (Note 2)
LSB
Transfer Curve Offset V
OS
(Note 2) -3 +3 mV
Offset Temperature Drift
µV/°C
ANALOG INPUTS (INP, INN)
Full-Scale Input Voltage Range V
FS
mV
P-P
Full-Scale Range Temperature
Drift
ppm/°C
Common-Mode Input Voltage V
CM
Internally self-biased 0.7 V
Differential Input Capacitance C
IN
2.5 pF
Differential Input Resistance R
IN
1.8 kΩ
Full-Power Analog Bandwidth FPBW 700
MHz
REFERENCE (REFIO, REFADJ)
Reference Output Voltage V
REFIO
REFADJ = AGND
1.24
V
Reference Temperature Drift 90
ppm/°C
REFADJ Input High Voltage
Used to disable the internal reference AV
CC
- 0.3 V
SAMPLING CHARACTERISTICS
Maximum Sampling Rate f
SAMPLE
MHz
Minimum Sampling Rate f
SAMPLE
20
MHz
Clock Duty Cycle Set by clock-management circuit
%
Aperture Delay t
AD
Figures 5, 11 620 ps
Aperture Jitter t
AJ
Figure 11 0.15
ps
RMS
SYMBOL
MIN TYP MAX
-2.1 ±0.75 +2.1
-1.0 ±0.3 +1.3
±15
1150 1390
±60
V
REFADJ
1.18
210
40 to 60
1.30
MAX1214N
1.8V, Low-Power, 12-Bit, 210Msps
ADC for Broadband Applications
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(AV
CC
= OV
CC
= 1.8V, AGND = OGND = 0, f
SAMPLE
= 210MHz, differential clock input drive, 0.1µF capacitor on REFIO, internal ref-
erence, digital output pins differential R
L
= 100Ω. Limits are for TA= -40°C to +85°C, unless otherwise noted. Typical values are at
T
A
= +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
CLOCK INPUTS (CLKP, CLKN)
Differential Clock Input Amplitude
(Note 3)
500
mV
P-P
Clock Input Common-Mode
Voltage Range
Internally self-biased 1.15 ±0.25 V
Clock Differential Input
R
CLK
kΩ
Clock Differential Input
Capacitance
C
CLK
5pF
DYNAMIC CHARACTERISTICS (at A
IN
= -1dBFS)
fIN = 10MHz
67.3
fIN = 100MHz
67
fIN = 200MHz
Signal-to-Noise Ratio SNR
f
IN
= 250MHz 65.0
dB
fIN = 10MHz
67.2
fIN = 100MHz
66.6
fIN = 200MHz 65.2
Signal-to-Noise and Distortion SINAD
f
IN
= 250MHz 64.9
dB
fIN = 10MHz
88.5
fIN = 100MHz
81.3
fIN = 200MHz 82.8
Spurious-Free Dynamic Range SFDR
f
IN
= 250MHz 84.9
dBc
fIN = 10MHz
fIN = 100MHz
fIN = 200MHz
Worst Harmonics
(HD2 or HD3)
f
IN
= 250MHz
dBc
Two-Tone Intermodulation
Distortion
TTIMD
f
IN1
= 97MHz at -7dBFS,
f
IN2
= 100MHz at -7dBFS
-79 dBc
LVDS DIGITAL OUTPUTS (D0P/N–D11P/N, ORP/N)
Differential Output Voltage |VOD|RL = 100Ω
mV
Output Offset Voltage OV
OS
RL = 100Ω
V
200
11 ±25%
65.5
65.2
65.3
65.3
64.9
77.0
76.0
-88.5 -77.0
280 440
1.110 1.370
-81.3 -76.0
-82.8
-84.9
MAX1214N
1.8V, Low-Power, 12-Bit, 210Msps
ADC for Broadband Applications
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(AV
CC
= OV
CC
= 1.8V, AGND = OGND = 0, f
SAMPLE
= 210MHz, differential clock input drive, 0.1µF capacitor on REFIO, internal ref-
erence, digital output pins differential R
L
= 100Ω. Limits are for TA= -40°C to +85°C, unless otherwise noted. Typical values are at
T
A
= +25°C.) (Note 1)
PARAMETER
CONDITIONS
TYP
UNITS
LVCMOS DIGITAL INPUTS (CLKDIV, T/B)
Digital Input-Voltage Low V
IL
V
Digital Input-Voltage High V
IH
0.8 x AV
CC
V
TIMING CHARACTERISTICS
CLK-to-Data Propagation Delay t
PDL
Figure 5
ns
CLK-to-DCLK Propagation Delay
t
CPDL
Figure 5
ns
DCLK-to-Data Propagation Delay
Figure 5 (Note 3) 1.8 1.9 2.0 ns
LVDS Output Rise Time t
RISE
20% to 80%, CL = 5pF
ps
LVDS Output Fall Time t
FALL
20% to 80%, CL = 5pF
ps
Output Data Pipeline Delay
Figure 5 11
Clock
cycles
POWER REQUIREMENTS
Analog Supply Voltage Range AV
CC
V
Digital Supply Voltage Range OV
CC
V
Analog Supply Current I
AVCC
fIN = 100MHz
410 mA
Digital Supply Current I
OVCC
fIN = 100MHz 65 71 mA
Analog Power Dissipation P
DISS
fIN = 100MHz
866 mW
Offset 1.8
mV/V
Power-Supply Rejection Ratio
(Note 4)
PSRR
Gain 1.5
%FS/V
Note 1: Values at TA≥ +25°C guaranteed by production test, values at TA< +25°C guaranteed by design and characterization.
Note 2: Static linearity and offset parameters are computed from an end-point curve fit.
Note 3: Parameter guaranteed by design and characterization: T
A
= -40°C to +85°C.
Note 4: PSRR is measured with both analog and digital supplies connected to the same potential.
SYMBOL
MIN
MAX
0.2 x AV
t
- t
CPDL
PDL
t
LATENCY
1.70 1.80 1.90
1.70 1.80 1.90
2.05
3.95
450
450
379
799
CC
MAX1214N
1.8V, Low-Power, 12-Bit, 210Msps
ADC for Broadband Applications
_______________________________________________________________________________________ 5
FFT PLOT
(8192-POINT DATA RECORD)
MAX1214N toc01
AMPLITUDE (dBFS)
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-110
f
SAMPLE
= 210MHz
f
IN
= 12.484MHz
A
IN
= -0.97dBFS
SNR = 67.3dB
SINAD = 67.2dB
THD = -83.4dBc
SFDR = 88.5dB
HD2 = -90.4dBc
HD3 = -96.7dBc
3
2
5
4
0102030405060708090100
ANALOG INPUT FREQUENCY (MHz)
FFT PLOT
(8192-POINT DATA RECORD)
MAX1214N toc02
AMPLITUDE (dBFS)
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-110
2
3
5
0102030405060708090100
ANALOG INPUT FREQUENCY (MHz)
4
f
SAMPLE
= 210MHz
f
IN
= 100.155MHz
A
IN
= -0.954dBFS
SNR = 67dB
SINAD = 66.6dB
THD = -76.8dBc
SFDR = 81.2dBc
HD2 = -81.2dBc
HD3 = -81.8dBc
FFT PLOT
(8192-POINT DATA RECORD)
MAX1214N toc03
AMPLITUDE (dBFS)
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-110
f
SAMPLE
= 210MHz
f
IN
= 199.771MHz
A
IN
= -0.961dBFS
SNR = 65.4dB
SINAD = 65.1dB
THD = -78.5dBc
SFDR = 82.8dBc
HD2 = -82.8dBc
HD3 = -84.6dBc
3
2
0102030405060708090100
ANALOG INPUT FREQUENCY (MHz)
6
7
9
8
5
4
10
FFT PLOT
(8192-POINT DATA RECORD)
MAX1214N toc04
AMPLITUDE (dBFS)
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-110
f
SAMPLE
= 210MHz
f
IN
= 249.913MHz
A
IN
= -0.994dBFS
SNR = 65dB
SINAD = 64.9dB
THD = -79.3dBc
SFDR = 85dBc
HD2 = -85dBc
HD3 = -86dBc
3
2
0102030405060708090100
ANALOG INPUT FREQUENCY (MHz)
5
4
TWO-TONE IMD PLOT
(8192-POINT DATA RECORD)
MAX1214N toc05
AMPLITUDE (dBFS)
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-110
f
SAMPLE
= 210MHz
f
IN1
= 96.8737793MHz
f
IN2
= 100.1550293MHz
IMD = -79dBc
f
IN1
f
IN2
2f
IN2
- f
IN1
2f
IN1
+ f
IN2
2f
IN2
+ f
IN1
f
IN2
- f
IN1
f
IN2
+ f
IN1
0102030405060708090100
ANALOG INPUT FREQUENCY (MHz)
SNR/SINAD vs. ANALOG INPUT FREQUENCY
(f
SAMPLE
= 210MHz, AIN = -1dBFS)
MAX1214N toc06
fIN (MHz)
SNR/SINAD (dB)
25020015010050
50
55
60
65
70
45
0 300
SNR
SINAD
SFDR/(-THD) vs. ANALOG INPUT FREQUENCY
(f
SAMPLE
= 210MHz, A
IN
= -1dBFS)
MAX1214N toc07
fIN (MHz)
SFDR/(-THD) (dBc)
25020015010050
50
55
60
65
70
75
80
85
90
95
100
45
0 300
SFDR
-THD
HD2/HD3 vs. ANALOG INPUT FREQUENCY
(f
SAMPLE
= 210MHz, AIN = -1dBFS)
MAX1214N toc08
fIN (MHz)
HD2/HD3 (dBc)
25020015010050
-105
-95
-100
-90
-85
-80
-75
-70
-65
-60
-55
-50
-110
0 300
HD2
HD3
SNR/SINAD vs. ANALOG INPUT AMPLITUDE
(f
SAMPLE
= 210MHz, fIN = 65.087MHz)
MAX1214N toc9
ANALOG INPUT AMPLITUDE (dBFS)
SNR/SINAD (dB)
-5-10-15-20-25-30-35-40-45-50
20
30
40
50
60
70
0
10
-55 0
SNR
SINAD
Typical Operating Characteristics
(AV
CC
= OV
CC
= 1.8V, AGND = OGND = 0, f
SAMPLE
= 210MHz, A
IN
= -1dBFS; see each TOC for detailed information on test conditions, differential input drive, differential sine-wave clock input drive, 0.1µF capacitor on REFIO, internal reference, digital output pins
differential RL = 100Ω, TA= +25°C.)
MAX1214N
1.8V, Low-Power, 12-Bit, 210Msps
ADC for Broadband Applications
6 ______________________________________________________________________________________
SFDR/(-THD) vs. ANALOG INPUT AMPLITUDE
(f
SAMPLE
= 210MHz, f
IN
= 65.087MHz)
MAX1214N toc10
ANALOG INPUT AMPLITUDE (dBFS)
SFDR/(-THD) (dBc)
-5-10-15-20-25-30-35-40-45-50
45
60
70
80
90
55
65
75
85
95
100
30
35
50
40
-55 0
SFDR
-THD
HD2/HD3 vs. ANALOG INPUT AMPLITUDE
(f
SAMPLE
= 210MHz, f
IN
= 65.087MHz)
MAX1214N toc11
ANALOG INPUT AMPLITUDE (dBFS)
HD2/HD3 (dBc)
-5-10-15-20-25-30-35-40-45-50
-90
-80
-70
-60
-50
-40
-30
-110
-100
-55 0
HD2
HD2
SNR/SINAD vs. SAMPLE FREQUENCY
(f
IN
= 65.087MHz, AIN = -1dBFS)
MAX1214N toc12
f
SAMPLE
(MHz)
SNR/SINAD (dB)
180 200160120 14010040 60 8020
55
60
65
70
75
40
50
45
0 220
SNR
SINAD
SFDR/(-THD) vs. SAMPLE FREQUENCY
(f
IN
= 65.087MHz, AIN = -1dBFS)
MAX1214N toc13
f
SAMPLE
(MHz)
SFDR/(-THD) (dBc)
180 200160120 14060 80 1004020
75
80
85
90
95
100
50
70
65
60
55
0 220
SFDR
-THD
HD2/HD3 vs. SAMPLE FREQUENCY
(f
IN
= 65.087MHz, A
IN
= -1dBFS)
MAX1214N toc14
f
SAMPLE
(MHz)
HD2/HD3 (dBc)
180 20016014012010060 8020 40
-100
-110
-95
-90
-85
-80
-75
-70
-60
-65
-120
-105
-115
0 220
HD3
HD2
TOTAL POWER DISSIPATION vs. SAMPLE
FREQUENCY (f
IN
= 65.087MHz, AIN = -1dBFS)
MAX1214N toc15
f
SAMPLE
(MHz)
P
DISS
(W)
191153 17213496 11558 7739
0.750
0.725
0.775
0.800
0.825
0.850
0.875
0.700
20 210
INTEGRAL NONLINEARITY
vs. DIGITAL OUTPUT CODE
MAX1214N toc16
DIGITAL OUTPUT CODE
INL (LSB)
358430722048 25601024 1536512
-0.4
-0.1
0.2
0.5
0.8
-0.7
0 4096
DIFFERENTIAL NONLINEARITY
vs. DIGITAL OUTPUT CODE
MAX1214N toc17
DIGITAL OUTPUT CODE
DNL (LSB)
358430722048 25601024 1536512
-0.5
-0.2
0.1
0.4
0.7
-0.8
0 4096
GAIN BANDWIDTH PLOT
(f
SAMPLE
= 210MHz, AIN = -1dBFS)
MAX1214N toc18
ANALOG INPUT FREQUENCY (MHz)
GAIN (dB)
10 100
-6
-5
-4
-3
-2
-1
0
1
-7
1 1000
Typical Operating Characteristics (continued)
(AV
CC
= OV
CC
= 1.8V, AGND = OGND = 0, f
SAMPLE
= 210MHz, A
IN
= -1dBFS; see each TOC for detailed information on test conditions, differential input drive, differential sine-wave clock input drive, 0.1µF capacitor on REFIO, internal reference, digital output pins
differential R
L
= 100Ω, TA= +25°C.)
MAX1214N
1.8V, Low-Power, 12-Bit, 210Msps
ADC for Broadband Applications
_______________________________________________________________________________________ 7
SNR/SINAD vs. TEMPERATURE
(f
SAMPLE
= 210MHz, fIN = 100MHz, AIN = -1dBFS)
MAX1214N toc19
TEMPERATURE (°C)
SNR/SINAD (dB)
603510-15
61.5
62.5
63.5
64.5
65.5
66.5
67.5
68.5
69.5
70.5
60.5
-40 85
SNR
SINAD
SFDR/(-THD) vs. TEMPERATURE
(f
SAMPLE
= 210MHz, fIN = 100MHz, AIN = -1dBFS)
MAX1214N toc20
TEMPERATURE (°C)
SFDR/(-THD) (dBc)
603510-15
65
70
75
80
85
90
60
-40 85
SFDR
-THD
HD2/HD3 vs. TEMPERATURE
(f
SAMPLE
= 210MHz, fIN = 100MHz, AIN = -1dBFS)
MAX1214N toc21
TEMPERATURE (°C)
HD2/HD3 (dBc)
603510-15
55
60
65
70
75
80
85
90
95
100
50
-40 85
HD2
HD3
SNR/SINAD vs. SUPPLY VOLTAGE
(f
IN
= 65.087MHz, A
IN
= -1dBFS)
MAX1214N toc22
SUPPLY VOLTAGE (V)
SNR/SINAD (dB)
1.851.801.75
62
61
63
64
65
68
67
66
69
70
60
1.70 1.90
SNR
SINAD
Typical Operating Characteristics (continued)
(AV
CC
= OV
CC
= 1.8V, AGND = OGND = 0, f
SAMPLE
= 210MHz, A
IN
= -1dBFS; see each TOC for detailed information on test conditions, differential input drive, differential sine-wave clock input drive, 0.1µF capacitor on REFIO, internal reference, digital output pins
differential RL = 100Ω, TA= +25°C.)
SFDR/(-THD) vs. SUPPLY VOLTAGE
(f
IN
= 65.087MHz, AIN = -1dBFS)
MAX1214N toc23
SUPPLY VOLTAGE (V)
SFDR/(-THD) (dBc)
1.851.801.75
73
76
79
82
85
88
91
94
97
100
70
1.70 1.90
SFDR
-THD
HD2/HD3 vs. SUPPLY VOLTAGE
(f
IN
= 65.087MHz, AIN = -1dBFS)
MAX1214N toc24
SUPPLY VOLTAGE (V)
HD2/HD3 (dBc)
1.851.801.75
-115
-110
-105
-100
-95
-90
-85
-80
-75
-70
-120
1.70 1.90
HD3
HD2
Typical Operating Characteristics (continued)
(AV
CC
= OV
CC
= 1.8V, AGND = OGND = 0, f
SAMPLE
= 210MHz, A
IN
= -1dBFS; see each TOC for detailed information on test conditions, differential input drive, differential sine-wave clock input drive, 0.1µF capacitor on REFIO, internal reference, digital output pins
differential RL = 100Ω, TA= +25°C.)
REFERENCE VOLTAGE vs. SUPPLY VOLTAGE
(f
IN
= 65.087MHz, AIN = -1dBFS)
MAX1214N toc25
SUPPLY VOLTAGE (V)
V
REFIO
(V)
1.851.801.75
1.242
1.241
1.243
1.246
1.245
1.244
1.247
1.248
1.240
1.70 1.90
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