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PDF MAX1209 Data sheet ( Hoja de datos )
| Número de pieza | MAX1209 | |
| Descripción | 3.3V IF-Sampling ADC | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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19-1001; Rev 0; 8/04
12-Bit, 80Msps, 3.3V IF-Sampling ADC
General Description
The MAX1209 is a 3.3V, 12-bit, 80Msps analog-to-digital
converter (ADC) featuring a fully differential wideband
track-and-hold (T/H) input amplifier, driving a low-noise
internal quantizer. The analog input stage accepts sin-
gle-ended or differential signals. The MAX1209 is opti-
mized for low power, small size, and high dynamic
performance. Excellent dynamic performance is main-
tained from baseband to input frequencies of 175MHz
and beyond, making the MAX1209 ideal for intermediate-
frequency (IF) sampling applications.
Powered from a single 3.0V to 3.6V supply, the
MAX1209 consumes only 366mW while delivering a
typical signal-to-noise (SNR) performance of 66.5dB at
an input frequency of 175MHz. In addition to low oper-
ating power, the MAX1209 features a 3µW power-down
mode to conserve power during idle periods.
A flexible reference structure allows the MAX1209 to use
the internal 2.048V bandgap reference or accept an
externally applied reference. The reference structure
allows the full-scale analog input range to be adjusted
from ±0.35V to ±1.15V. The MAX1209 provides a com-
mon-mode reference to simplify design and reduce exter-
nal component count in differential analog input circuits.
The MAX1209 supports both a single-ended and differ-
ential input clock drive. Wide variations in the clock
duty cycle are compensated with the ADC’s internal
duty-cycle equalizer (DCE).
ADC conversion results are available through a 12-bit,
parallel, CMOS-compatible output bus. The digital out-
put format is pin selectable to be either two’s comple-
ment or Gray code. A data-valid indicator eliminates
external components that are normally required for reli-
able digital interfacing. A separate digital power input
accepts a wide 1.7V to 3.6V supply, allowing the
MAX1209 to interface with various logic levels.
The MAX1209 is available in a 6mm x 6mm x 0.8mm,
40-pin thin QFN package with exposed paddle (EP),
and is specified for the extended industrial (-40°C to
+85°C) temperature range.
See the Pin-Compatible Versions table for a complete
family of 14-bit and 12-bit high-speed ADCs.
Applications
IF Communication Receivers
Cellular, Point-to-Point Microwave, HFC, WLAN
Ultrasound and Medical Imaging
Portable Instrumentation
Low-Power Data Acquisition
Features
♦ Direct IF Sampling Up to 400MHz
♦ Excellent Dynamic Performance
68.0dB/66.5dB SNR at fIN = 70MHz/175MHz
85.1dBc/85.5dBc SFDR at fIN = 70MHz/175MHz
♦ 3.3V Low-Power Operation
366mW (Single-Ended Clock Mode)
393mW (Differential Clock Mode)
3µW (Power-Down Mode)
♦ Differential or Single-Ended Clock
♦ Fully Differential or Single-Ended Analog Input
♦ Adjustable Full-Scale Analog Input Range: ±0.35V
to ±1.15V
♦ Common-Mode Reference
♦ CMOS-Compatible Outputs in Two’s Complement
or Gray Code
♦ Data-Valid Indicator Simplifies Digital Design
♦ Data Out-of-Range Indicator
♦ Miniature, 40-Pin Thin QFN Package with Exposed
Paddle
♦ Evaluation Kit Available (Order MAX1211EVKIT)
PART
MAX1209ETL
Ordering Information
TEMP
RANGE
PIN-PACKAGE
PKG
CODE
-40°C to 40 Thin QFN
T4066-3
+85°C (6mm x 6mm x 0.8mm)
Pin-Compatible Versions
PART
SAMPLING RESOLUTION TARGET
RATE (Msps)
(BITS)
APPLICATION
MAX12553
65
14 IF/Baseband
MAX1209
80
12
IF
MAX1211
65
12
IF
MAX1208
80
12 Baseband
MAX1207
MAX1206
65
40
12 Baseband
12 Baseband
Pin Configuration appears at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim's website at www.maxim-ic.com.
1 page  
12-Bit, 80Msps, 3.3V IF-Sampling ADC
ELECTRICAL CHARACTERISTICS (continued)
(VDD = 3.3V, OVDD = 2.0V, GND = 0, REFIN = REFOUT (internal reference), VIN = -0.5dBFS, CLKTYP = high, DCE = high, PD = low,
G/T = low, fCLK = 80MHz (50% duty cycle), TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
Input Resistance
RCLK
Input Capacitance
CCLK
DIGITAL INPUTS (CLKTYP, G/T, PD)
Figure 5
Input High Threshold
VIH
CONDITIONS
Input Low Threshold
VIL
Input Leakage Current
Input Capacitance
CDIN
DIGITAL OUTPUTS (D11–D0, DAV, DOR)
Output Voltage Low
VOL
Output Voltage High
Tri-State Leakage Current
D11–D0, DOR Tri-State Output
Capacitance
VOH
ILEAK
COUT
VIH = OVDD
VIL = 0
D11–D0, DOR, ISINK = 200µA
DAV, ISINK = 600µA
D11–D0, DOR, ISOURCE = 200µA
DAV, ISOURCE = 600µA
(Note 3)
(Note 3)
MIN TYP MAX UNITS
5 kΩ
2 pF
0.8 x
OVDD
5
0.2 x
OVDD
±5
±5
V
V
µA
pF
OVDD -
0.2
OVDD -
0.2
0.2
V
0.2
V
±5 µA
3 pF
DAV Tri-State Output
Capacitance
POWER REQUIREMENTS
Analog Supply Voltage
Digital Output Supply Voltage
Analog Supply Current
CDAV (Note 3)
6 pF
VDD
OVDD
IVDD
Normal operating mode,
fIN = 175MHz at -0.5dBFS, CLKTYP = GND,
single-ended clock
Normal operating mode,
fIN = 175MHz at -0.5dBFS,
CLKTYP = OVDD, differential clock
Power-down mode clock idle, PD = OVDD
3.0
1.7
3.3 3.6
2.0 VDD +
0.3V
111
119 132
0.001
V
V
mA
_______________________________________________________________________________________ 5
5 Page 
12-Bit, 80Msps, 3.3V IF-Sampling ADC
Typical Operating Characteristics (continued)
(VDD = 3.3V, OVDD = 2.0V, GND = 0, REFIN = REFOUT (internal reference), VIN = -0.5dBFS, CLKTYP = high, DCE = high, PD = low,
G/T = low, fCLK = 80MHz (50% duty cycle), TA = +25°C, unless otherwise noted.)
2.05
2.04
2.03
2.02
2.01
2.00
1.99
1.98
1.97
1.96
1.95
-2.0
REFERENCE OUTPUT VOLTAGE
LOAD REGULATION
+85°C
-40°C
+25°C
-1.5 -1.0 -0.5
0
IREFOUT SINK CURRENT (mA)
0.5
REFERENCE OUTPUT VOLTAGE
SHORT-CIRCUIT PERFORMANCE
3.5
3.0
2.5 +85°C
2.0
1.5
+25°C
1.0
0.5
0
-3.0
-40°C
-2.0 -1.0
0
IREFOUT SINK CURRENT (mA)
1.0
REFERENCE OUTPUT VOLTAGE
vs. TEMPERATURE
2.039
2.037
2.035
2.033
2.031
2.029
-40
-15 -10 35 60
TEMPERATURE (°C)
85
REFP, COM, REFN
LOAD REGULATION
3.0
2.5 VREFP
2.0
1.5 VCOM
1.0
VREFN
0.5
INTERNAL REFERENCE MODE AND
BUFFERED EXTERNAL REFERENCE MODE
0
-2 -1
0
1
SINK CURRENT (mA)
2
REFP, COM, REFN
SHORT-CIRCUIT PERFORMANCE
3.5
3.0
VCOM
2.5
VREFP
2.0
1.5
1.0
0.5
0
-8
VREFN
INTERNAL REFERENCE MODE
AND BUFFERED EXTERNAL
REFERENCE MODE
-4 0 4 8
SINK CURRENT (mA)
12
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 27 Páginas | |
| PDF Descargar | [ Datasheet MAX1209.PDF ] | |
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