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PDF LTC2203 Data sheet ( Hoja de datos )
| Número de pieza | LTC2203 | |
| Descripción | (LTC2202 / LTC2203) 25Msps/10Msps ADCs | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LTC2203 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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LTC2203/LTC2202
16-Bit, 25Msps/10Msps ADCs
FEATURESwww.datasheet4u.com
■ Sample Rate: 25Msps/10Msps
■ 81.6dB SNR and 100dB SFDR (2.5V Range)
■ SFDR 90dB at 70MHz (1.667VP-P Input Range)
■ PGA Front End (2.5VP-P or 1.667VP-P Input Range)
■ 380MHz Full Power Bandwidth S/H
■ Optional Internal Dither
■ Optional Data Output Randomizer
■ Single 3.3V Supply
■ Power Dissipation: 220mW/140mW
■ Clock Duty Cycle Stabilizer
■ Out-of-Range Indicator
■ Pin Compatible Family
25Msps: LTC2203 (16-Bit)
10Msps: LTC2202 (16-Bit)
■ 48-Pin (7mm × 7mm) QFN Package
U
APPLICATIO S
■ Telecommunications
■ Receivers
■ Cellular Base Stations
■ Spectrum Analysis
■ Imaging Systems
■ ATE
DESCRIPTIO
The LTC®2203/LTC2202 are 25Msps/10Msps, sampling
16-bit A/D converters designed for digitizing high frequen-
cy, wide dynamic range signals with input frequencies up
to 380MHz. The input range of the ADC can be optimized
with the PGA front end.
The LTC2203/LTC2202 are perfect for demanding ap-
plications, with AC performance that includes 81.6dB
SNR and 100dB spurious free dynamic range (SFDR).
Maximum DC specs include ±4LSB INL, ±1LSB DNL (no
missing codes).
A separate output power supply allows the CMOS output
swing to range from 0.5V to 3.6V.
A single-ended CLK input controls converter operation. An
optional clock duty cycle stabilizer allows high performance
at full speed with a wide range of clock duty cycles.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All
other trademarks are the property of their respective owners. Protected by U.S. Patents
including 4843302 and 6949965B1
TYPICAL APPLICATIO
VCM
2.2μF
1.25V
COMMON MODE
BIAS VOLTAGE
AIN +
ANALOG
INPUT
AIN –
+
S/H
AMP
–
CLOCK/DUTY
CYCLE
CONTROL
CLK
3.3V
SENSE
INTERNAL ADC
REFERENCE
GENERATOR
16-BIT
PIPELINED
ADC CORE
CORRECTION
LOGIC AND
SHIFT REGISTER
OVDD
OUTPUT
DRIVERS
OGND
VDD
GND
0.5V TO 3.6V
1μF
OF
CLKOUT+
CLKOUT–
D15
•
•
•
D0
CMOS
OUTPUTS
3.3V
1μF 1μF 1μF
PGA SHDN DITH MODE OE
ADC CONTROL INPUTS
RAND
22032 TA01
LTC2203: 128K Point FFT,
fIN = 5.1MHz, –1dBFS, PGA = 0
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
–140
0 2 4 6 8 10 12
FREQUENCY(MHz)
22032 GO7
22032fb
1
1 page  
LTC2203/LTC2202
DIGITAL I PUTS A D 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
LOGIC INPUTS (CLK, ⎯O⎯E, DITH, PGA, SHDN, RAND)
www.datasheet4u.com
VIH High Level Input Voltage
VIL Low Level Input Voltage
IIN Digital Input Current
CIN Digital Input Capacitance
LOGIC OUTPUTS
OVDD = 3.3V
VOH
High Level Output Voltage
VOL Low Level Output Voltage
ISOURCE
ISINK
OVDD = 2.5V
VOH
VOL
OVDD = 1.8V
VOH
VOL
Output Source Current
Output Sink Current
High Level Output Voltage
Low Level Output Voltage
High Level Output Voltage
Low Level Output Voltage
CONDITIONS
VDD = 3.3V
VDD = 3.3V
VIN = 0V to VDD
(Note 7)
VDD = 3.3V
VDD = 3.3V
VOUT = 0V
VOUT = 3.3V
VDD = 3.3V
VDD = 3.3V
VDD = 3.3V
VDD = 3.3V
MIN TYP MAX UNITS
●2
●
●
0.8
±10
1.5
V
V
μA
pF
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
POWER REQUIRE E TS The ● denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at TA = 25°C. AIN = –1dBFS. (Note 4)
SYMBOL
VDD
PSHDN
OVDD
IVDD
PDIS
PARAMETER
Analog Supply Voltage
Shutdown Power
Output Supply Voltage
Analog Supply Current
Power Dissipation
CONDITIONS
LTC2203
MIN TYP MAX
● 3.135 3.3 3.465
SHDN = VDD, CLK = VDD
● 0.5
2
3.6
● 66 80
● 220 264
MIN
3.135
0.5
LTC2202
TYP
3.3
2
42
140
MAX
3.465
3.6
50
165
UNITS
V
mW
V
mA
mW
22032fb
5
5 Page 
TYPICAL PERFOR A CE CHARACTERISTICS
LTC2203: Normalized Full
Scale vs Temperature, Internal
Reference, 5 Units
www.dat1a.0s1heet4u.com
LTC2203: Offset Voltage vs
Temperature, 5 Units
6
1.005
4
2
10
0.995
–2
–4
0.99
–40 –20 0
20 40 60
TEMPERATURE (°C)
80
22023 G37
–6
–40 –20 0
20 40 60
TEMPERATURE (˚C)
80
22023 G38
LTC2203/LTC2202
LTC2203: SFDR vs Input Common
Mode Voltage, fIN = 5MHz,
–1dBFS, PGA = 0
110
105
100
95
90
85
80
75
70
65
60
0.5 0.75 1 1.25 1.50 1.75
INPUT COMMON MODE VOLTAGE (V)
2
22023 G39
LTC2202: Integral Nonlinearity
(INL) vs Output Code
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
0
16384
32768
CODE
49152 65536
22023 G40
LTC2202: 128K Point FFT,
fIN = 5.1MHz, –1dBFS, PGA = 0
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
–140
01 2 3 4
FREQUENCY (MHz)
5
22023 G43
LTC2202: Differential Nonlinearity
(DNL) vs Output Code
1.0
0.8
0.6
0.4
0.2
0
0.2
0.4
0.6
0.8
1.0
0
16384
32768
CODE
49152
65536
22023 G41
LTC2202: 128K Point FFT,
fIN = 5.1MHz, –10dBFS, PGA = 0
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
–140
01 2 3 4 5
FREQUENCY (MHz)
22023 G44
LTC2202: AC Grounded Input
Histogram (256K Samples)
50000
45000
40000
35000
30000
25000
20000
15000
10000
5000
0
32793
32797 32801 32805 32809
OUTPUT CODE
22023 G42
LTC2202: 128K Point FFT,
fIN = 5.1MHz, –20dBFS, PGA = 0,
Internal Dither “Off”
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
–140
01 2 3 4 5
FREQUENCY (MHz)
22023 G45
22032fb
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet LTC2203.PDF ] | |
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