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PDF LTC2209 Data sheet ( Hoja de datos )
| Número de pieza | LTC2209 | |
| Descripción | 160Msps ADC | |
| Fabricantes | Linear Technology Corporation | |
| Logotipo |  |
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LTC2209
16-Bit, 160Msps ADC
FEATURES
www■.datSaashmeept4leu.cRoamte: 160Msps
■ 77.3dBFS Noise Floor
■ 100dB SFDR
■ SFDR >84dB at 250MHz (1.5VP-P Input Range)
■ PGA Front End (2.25VP-P or 1.5VP-P Input Range)
■ 700MHz Full Power Bandwidth S/H
■ Optional Internal Dither
■ Optional Data Output Randomizer
■ LVDS or CMOS Outputs
■ Single 3.3V Supply
■ Power Dissipation: 1.45W
■ Clock Duty Cycle Stabilizer
■ Pin Compatible 14-Bit Version
160Msps: LTC2209 (16-Bit), LTC2209-14 (14-Bit)
■ 64-Pin (9mm × 9mm) QFN Package
APPLICATIONS
■ Telecommunications
■ Receivers
■ Cellular Base Stations
■ Spectrum Analysis
■ Imaging Systems
■ ATE
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
DESCRIPTION
The LTC®2209 is a 160Msps 16-bit A/D converter designed
for digitizing high frequency, wide dynamic range signals
with input frequencies up to 700MHz. The input range of
the ADC can be optimized with the PGA front end.
The LTC2209 is perfect for demanding communications
applications, with AC performance that includes 77.3dBFS
Noise Floor and 100dB spurious free dynamic range
(SFDR). Ultra low jitter of 70fsRMS allows undersampling
of high input frequencies with excellent noise performance.
Maximum DC specs include ±5LSB INL, ±1LSB DNL (no
missing codes).
The digital output can be either differential LVDS or
single-ended CMOS. There are two format options for
the CMOS outputs: a single bus running at the full data
rate or demultiplexed busses running at half data rate. A
separate output power supply allows the CMOS output
swing to range from 0.5V to 3.6V.
The ENC+ and ENC– inputs may be driven differentially
or single-ended with a sine wave, PECL, LVDS, TTL or
CMOS inputs. An optional clock duty cycle stabilizer al-
lows high performance at full speed with a wide range of
clock duty cycles.
TYPICAL APPLICATION
VCM
2.2µF
1.25V
COMMON MODE
BIAS VOLTAGE
AIN+
ANALOG
INPUT
AIN–
+
S/H
AMP
–
CLOCK/DUTY
CYCLE
CONTROL
ENC + ENC –
3.3V
SENSE
INTERNAL ADC
REFERENCE
GENERATOR
OVDD
16-BIT
PIPELINED
ADC CORE
CORRECTION
LOGIC AND
SHIFT REGISTER
OUTPUT
DRIVERS
OGND
VDD
GND
PGA SHDN DITH MODE LVDS RAND
ADC CONTROL INPUTS
0.5V TO 3.6V
1µF
OF
CLKOUT
D15
•
•
•
D0
CMOS
OR
LVDS
1µF 1µF
3.3V
1µF
2209 TA01
64k Point FFT, fIN = 15.1MHz,
–1dBFS, PGA = 0
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
0
10 20 30 40 50 60 70 80
FREQUENCY (MHz)
2209 TA01b
2209f
1
1 page  
LTC2209
COMMON MODE BIAS CHARACTERISTICS The ● denotes the specifications which apply over
the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 4)
PARAMETER
VCM Output Voltage
wwwV.dCaMtaOsuhtepeutt4Tue.mcopmco
VCM Line Regulation
CONDITIONS
IOUT = 0
IOUT = 0
3.135V ≤ VDD ≤ 3.465V
MIN TYP MAX UNITS
1.15 1.25 1.35
V
+40 ppm/°C
1 mV/ V
VCM Output Resistance
1mA ≤ | IOUT | ≤ 1mA
2Ω
DIGITAL INPUTS AND DIGITAL OUTPUTS The ● denotes the specifications which apply over the
full operating temperature range, otherwise specifications are at TA = 25°C. (Note 4)
SYMBOL
PARAMETER
ENCODE INPUTS (ENC+, ENC–)
VID Differential Input Voltage
VICM Common Mode Input Voltage
RIN Input Resistance
CIN Input Capacitance
LOGIC INPUTS (DITH, PGA, SHDN, RAND)
VIH High Level Input Voltage
VIL Low Level Input Voltage
IIN Digital Input Current
CIN Digital Input Capacitance
LOGIC OUTPUTS (CMOS MODE)
OVDD = 3.3V
VOH
High Level Output Voltage
VOL Low Level Output Voltage
ISOURCE
Output Source Current
ISINK Output Sink Current
OVDD = 2.5V
VOH High Level Output Voltage
VOL Low Level Output Voltage
OVDD = 1.8V
VOH High Level Output Voltage
VOL Low Level Output Voltage
LOGIC OUTPUTS (LVDS MODE)
STANDARD LVDS
VOD Differential Output Voltage
VOS Output Common Mode Voltage
LOW POWER LVDS
VOD Differential Output Voltage
VOS Output Common Mode Voltage
CONDITIONS
(Note 7)
Internally Set
Externally Set (Note 7)
(See Figure 2)
(Note 7)
VDD = 3.3V
VDD = 3.3V
VIN = 0V to VDD
(Note 7)
MIN TYP MAX UNITS
● 0.2
1.6
1.2 3.0
6
3
V
V
V
kΩ
pF
●2
●
●
0.8
±10
1.5
V
V
µA
pF
VDD = 3.3V
VDD = 3.3V
VOUT = 0V
VOUT = 3.3V
VDD = 3.3V
VDD = 3.3V
VDD = 3.3V
VDD = 3.3V
100Ω Differential Load
100Ω Differential Load
100Ω Differential Load
100Ω Differential Load
IO = –10µA
IO = –200µA
IO = 160µA
IO = 1.6mA
●
●
3.1
IO = –200µA
IO = 1.60mA
IO = –200µA
IO = 1.60mA
3.299
3.29
0.01
0.10
– 50
50
2.49
0.1
1.79
0.1
0.4
V
V
V
V
mA
mA
V
V
V
V
● 247
350
454
● 1.125 1.2 1.375
● 125 175
250
● 1.125 1.2 1.375
mV
V
mV
V
2209f
5
5 Page 
TYPICAL PERFORMANCE CHARACTERISTICS
LTC2209
SFDR vs Input Level,
fIN = 70.2MHz,
www.datashPeeGtA4u=.c0o,mDither “On”
130
120
110
100
90
80
70
60
50
40
30
20
10
0
–80 –70 –60 –50 –40 –30 –20 –10 0
INPUT LEVEL (dBFS)
2209 G19
64k Point 2-Tone FFT,
fIN = 70.25MHz and 74.3MHz,
–25dBFS, PGA = 0
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
0
10 20 30 40 50 60 70 80
FREQUENCY (MHz)
2209 G22
SFDR vs Input Level,
fIN = 140.2MHz,
PGA = 1, Dither “On”
130
120
110
100
90
80
70
60
50
40
30
20
10
0
–80 –70 –60 –50 –40 –30 –20 –10 0
INPUT LEVEL (dBFS)
2209 G25
64k Point 2-Tone FFT,
fIN = 70.25MHz and 74.3MHz,
–7dBFS, PGA = 0
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
0
10 20 30 40 50 60 70 80
FREQUENCY (MHz)
2209 G20
64k Point FFT, fIN = 140.2 MHz,
–1dBFS, PGA = 1
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
0
10 20 30 40 50 60 70 80
FREQUENCY (MHz)
2209 G23
64k Point FFT, fIN = 170.1MHz,
–1dBFS, PGA = 1
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
0
10 20 30 40 50 60 70 80
FREQUENCY (MHz)
2209 G26
64k Point 2-Tone FFT,
fIN = 70.25MHz and 74.3MHz,
–15dBFS, PGA = 0
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
0
10 20 30 40 50 60 70 80
FREQUENCY (MHz)
2209 G21
SFDR vs Input Level,
fIN = 140.2MHz,
PGA = 1, Dither “Off”
130
120
110
100
90
80
70
60
50
40
30
20
10
0
–80 –70 –60 –50 –40 –30 –20 –10 0
INPUT LEVEL (dBFS)
2209 G24
64k Point FFT, fIN = 250.1MHz,
–1dBFS, PGA = 1
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
0 10 20 30 40 50 60 70 80
FREQUENCY (MHz)
2209 G27
2209f
11
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet LTC2209.PDF ] | |
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