Electrical Specifications Subject to Change
LTC2203/LTC2202
16-Bit, 25Msps/10Msps ADC
U
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
–140
FEATURES
■
■
■
■
■
■
■
■
■
■
■
■
DESCRIPTIO
■
Sample Rate: 25Msps/10Msps
81.6dB SNR and 100dB SFDR (2.5V Range)
SFDR >83dB at 70MHz (1.667V
P-P
Input Range)
PGA Front End (2.5V
P-P
or 1.667V
P-P
Input Range)
400MHz Full Power Bandwidth S/H
Optional Internal Dither
Optional Data Output Randomizer
Single 3.3V Supply
Power Dissipation: 210mW/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
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 400MHz. 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 81.4dB
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.
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
APPLICATIO S
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■
■
■
Telecommunications
Receivers
Cellular Base Stations
Spectrum Analysis
Imaging Systems
ATE
3.3V
SENSE
V
CM
1.25V
COMMON MODE
BIAS VOLTAGE
INTERNAL ADC
REFERENCE
GENERATOR
AIN
+
ANALOG
INPUT
+
–
S/H
AMP
16-BIT
PIPELINED
ADC CORE
AIN
–
CORRECTION
LOGIC AND
SHIFT REGISTER
OUTPUT
DRIVERS
OF
CLKOUT+
CLKOUT–
D15
•
•
•
D0
CMOS
OUTPUTS
OGND
CLOCK/DUTY
CYCLE
CONTROL
V
DD
GND
PGA
SHDN
DITH
MODE
3.3V
1F
1F
1F
AMPLITUDE (dBFS)
2.2F
CLK
ADC CONTROL INPUTS
U
TYPICAL APPLICATIO
U
LTC2203: 128K Point FFT,
f
IN
= 5.1MHz, –1dBFS, PGA = 0
OV
DD
0.5V TO 3.6V
1F
0
2
8
4
6
FREQUENCY(MHz)
10
12
22032 GO7
OE
RAND
22032 TA01
22032p
1
LTC2203/LTC2202
OV
DD
= V
DD
(Notes 1 and 2)
Supply Voltage (V
DD
) ................................... –0.3V to 4V
Digital Output Ground Voltage (OGND)........ –0.3V to 1V
Analog Input Voltage (Note 3) ..... –0.3V to (V
DD
+ 0.3V)
Digital Input Voltage .................... –0.3V to (V
DD
+ 0.3V)
Digital Output Voltage ................–0.3V to (OV
DD
+ 0.3V)
Power Dissipation............................................ 2000mW
Operating Temperature Range
LTC2203C/LTC2202C ............................... 0°C to 70°C
LTC2203I/LTC2202I .............................–40°C to 85°C
Storage Temperature Range ..................–65°C to 150°C
Digital Output Supply Voltage (OV
DD
) .......... –0.3V to 4V
TOP VIEW
48 GND
47 PGA
46 RAND
45 MODE
44 OE
43 OF
42 D15
41 D14
40 D13
39 D12
38 OGND
37 OVDD
SENSE 1
V
CM
2
V
DD
3
V
DD
4
GND 5
AIN
+
6
AIN
–
7
GND 8
GND 9
CLK 10
GND 11
V
DD
12
49
36 OVDD
35 D11
34 D10
33 D9
32 D8
31 OGND
30 CLKOUT+
29 CLKOUT–
28 D7
27 D6
26 D5
25 OVDD
P
U
ED
AR
EP
R
ORDER PART
NUMBER
LTC2203C
LTC2202C
LTC2203I
LTC2202I
OR
F
UK PACKAGE
48-LEAD (7mm
×
7mm) PLASTIC QFN
EXPOSED PAD IS GND (PIN 49)
MUST BE SOLDERED TO PCB BOARD
T
JMAX
= 125°C,
θ
JA
= 29°C/W
Order Options
Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
*The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for parts specified with wider operating temperature ranges.
CO VERTER CHARACTERISTICS
The
●
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 4)
PARAMETER
Resolution (No missing codes)
Integral Linearity Error
Integral Linearity Error
Differential Linearity Error
Offset Error
Offset Drift
Gain Error
Full-Scale Drift
Transition Noise
CONDITIONS
Differential Analog Input (Note 5) T
A
= 25°C
Differential Analog Input (Note 5)
Differential Analog Input
(Note 6)
External Reference
Internal Reference
External Reference
External Reference
MIN
16
●
●
●
●
V
DD
13
V
DD
14
GND 15
SHDN 16
DITH 17
D0 18
D1 19
D2 20
D3 21
D4 22
OGND 23
OVDD 24
UK PART*
MARKING
XXXXX
XXXXX
TYP
±1.2
±1.5
±0.3
±2
±10
±0.2
±30
±15
1.95
MAX
±4.0
±4.5
±1
±8
±1.5
UNITS
LSB
LSB
LSB
mV
μV/
°C
%FS
ppm/°C
ppm/°C
LSB
RMS
22032p
2
U
W
U
U
W W
W
ABSOLUTE
AXI U RATI GS
PACKAGE/ORDER I FOR ATIO
LTC2203/LTC2202
A ALOG I PUT
SYMBOL
V
IN
V
IN, CM
I
IN
I
SENSE
I
MODE
I
LVDS
C
IN
t
AP
t
JITTER
CMRR
BW-3dB
The
●
denotes the specifications which apply over the full operating temperature range, otherwise
specifications are at T
A
= 25°C. (Note 4)
PARAMETER
Analog Input Range (A
IN+
–
A
IN–
)
Analog Input Common Mode
Analog Input Leakage Current
SENSE Input Leakage Current
MODE Pin Pull-Down Current to GND
LVDS Pin Pull-Down Current to GND
Analog Input Capacitance
Sample-and-Hold
Acquisition Delay Time
Sample-and-Hold
Acquisition Delay Time Jitter
Analog Input
Common Mode Rejection Ratio
Full Power Bandwidth
CONDITIONS
3.135V ≤ V
DD
≤ 3.465V
Differential Input (Note 7)
0V ≤ A
IN+
,
A
IN–
≤ V
DD
0V ≤ SENSE ≤ V
DD
MIN
●
●
●
The
●
denotes the specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C. A
IN
= –1dBFS. (Note 4)
SYMBOL
SNR
PARAMETER
Signal-to-Noise Ratio
CONDITIONS
1MHz Input (2.5V Range, PGA = 0)
1MHz Input (1.667V Range, PGA = 1)
5MHz Input (2.5V Range, PGA = 0)
5MHz Input (1.667V Range, PGA = 1)
12.5MHz Input (2.5V Range, PGA = 0)
12.5MHz Input (1.667V Range, PGA = 1)
30MHz Input (2.5V Range, PGA = 0)
30MHz Input (1.667V Range, PGA = 1)
70MHz Input (2.5V Range, PGA = 0)
70MHz Input (1.667V Range, PGA =1 )
1MHz Input (2.5V Range, PGA = 0)
1MHz Input (1.667V Range, PGA = 1)
5MHz Input (2.5V Range, PGA = 0)
5MHz Input (1.667V Range, PGA = 1)
12.5MHz Input (2.5V Range, PGA = 0)
12.5MHz Input (1.667V Range, PGA = 1)
30MHz Input (2.5V Range, PGA = 0)
30MHz Input (1.667V Range, PGA = 1)
70MHz Input (2.5V Range, PGA = 0)
70MHz Input (1.667V Range, PGA = 1)
1MHz Input (2.5V Range, PGA = 0)
1MHz Input (1.667V Range, PGA = 1)
5MHz Input (2.5V Range, PGA = 0)
5MHz Input (1.667V Range, PGA = 1)
12.5MHz Input (2.5V Range, PGA = 0)
12.5MHz Input (1.667V Range, PGA = 1)
30MHz Input (2.5V Range, PGA = 0)
30MHz Input (1.667V Range, PGA = 1)
70MHz Input (2.5V Range, PGA = 0)
70MHz Input (1.667V Range, PGA = 1)
LTC2203
MIN
TYP
MAX
81.6
79.4
80.5
81.6
79.4
81.4
79.3
80.8
77.8
78.9
78.3
77.2
100
100
92
100
100
95
100
90
90
95
85
90
100
100
96
100
100
100
100
100
94
100
90
90
MIN
LTC2202
TYP MAX
81.6
79.4
81.6
79.4
81.4
79.3
80.8
78.9
78.3
77.2
100
100
95
100
90
95
85
95
85
90
100
100
100
100
100
100
100
100
90
90
UNITS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
22032p
DY A IC ACCURACY
W U
SFDR
Spurious Free
Dynamic Range
2
nd
or 3
rd
Harmonic
SFDR
Spurious Free
Dynamic Range
4
th
Harmonic
or Higher
U
U
1
–1
–3
Sample Mode ENC
+
< ENC
–
Hold Mode ENC
+
> ENC
–
TYP
MAX
1.667 or 2.5
1.25
1.5
1
3
10
10
10.9
1.2
TBD
200
UNITS
V
P-P
V
µA
µA
µA
µA
pF
ns
fs RMS
dB
MHz
1V < (A
IN+
= A
IN–
) <1.5V
80
400
●
80.5
77.8
●
TBD
90
●
96
3
LTC2203/LTC2202
DY A IC ACCURACY
SYMBOL
S/(N+D)
The
●
denotes the specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C. A
IN
= –1dBFS unless otherwise noted. (Note 4)
PARAMETER
Signal-to-Noise
Plus Distortion Ratio
CONDITIONS
1MHz Input (2.5V Range, PGA = 0)
1MHz Input (1.667V Range, PGA = 1)
5MHz Input (2.5V Range, PGA = 0)
5MHz Input (1.667V Range, PGA = 1)
12.5MHz Input (2.5V Range, PGA = 0)
12.5MHz Input (1.667V Range, PGA = 1)
30MHz Input (2.5V Range, PGA = 0)
30MHz Input (1.667V Range, PGA = 1)
70MHz Input (2.5V Range, PGA = 0)
70MHz Input (1.667V Range, PGA = 1)
1MHz Input (2.5V Range, PGA = 0)
1MHz Input (1.667V Range, PGA = 1)
5MHz Input (2.5V Range, PGA = 0)
5MHz Input (1.667V Range, PGA = 1)
12.5MHz Input (2.5V Range, PGA = 0)
12.5MHz Input (1.667V Range, PGA = 1)
30MHz Input (2.5V Range, PGA = 0)
30MHz Input (1.667V Range, PGA = 1)
70MHz Input (2.5V Range, PGA = 0)
70MHz Input (1.667V Range, PGA = 1)
1MHz Input (2.5V Range, PGA = 0)
1MHz Input (1.667V Range, PGA = 1)
5MHz Input (2.5V Range, PGA = 0)
5MHz Input (1.667V Range, PGA = 1)
12.5MHz Input (2.5V Range, PGA = 0)
12.5MHz Input (1.667V Range, PGA = 1)
30MHz Input (2.5V Range, PGA = 0)
30MHz Input (1.667V Range, PGA = 1)
70MHz Input (2.5V Range, PGA = 0)
70MHz Input (1.667V Range, PGA = 1)
MIN
LTC2203
TYP
MAX
81.5
79.3
81.5
79.3
81.3
79.2
80.6
78.6
78.1
77
105
105
105
105
105
105
105
105
100
100
115
115
115
115
115
115
115
115
110
110
MIN
LTC2202
TYP
MAX
81.5
79.3
81.5
79.3
81.3
79.2
80.6
78.6
78.1
77
105
105
105
105
105
105
105
105
100
100
115
115
115
115
115
115
115
115
110
110
UNITS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
SFDR
SFDR
The
●
denotes the specifications which apply over
the full operating temperature range, otherwise specifications are at T
A
= 25°C. (Note 4)
PARAMETER
V
CM
Output Voltage
V
CM
Output Tempco
V
CM
Line Regulation
V
CM
Output Resistance
CONDITIONS
I
OUT
= 0
I
OUT
= 0
3.135V ≤ V
DD
≤ 3.465V
1mA ≤ | I
OUT
| ≤ 1mA
MIN
1.15
TYP
1.25
±100
1
2
MAX
1.35
UNITS
V
ppm/°C
4
W U
●
80.4
80.4
77.7
77.7
Spurious Free
Dynamic Range
at –25dBFS
Dither “OFF”
Spurious Free
Dynamic Range
at –25dBFS
Dither “ON”
P
ED
AR
EP
R
●
OR
F
100
100
100
100
mV/ V
Ω
22032p
LTC2203/LTC2202
DIGITAL I PUTS A D DIGITAL OUTPUTS
SYMBOL
PARAMETER
LOGIC INPUTS (CLK, OE, DITH, PGA, SHDN, RAND)
V
IH
High Level Input Voltage
V
IL
Low Level Input Voltage
I
IN
Digital Input Current
C
IN
Digital Input Capacitance
LOGIC OUTPUTS
OV
DD
= 3.3V
V
OH
High Level Output Voltage
V
OL
I
SOURCE
I
SINK
OV
DD
= 2.5V
V
OH
V
OL
OV
DD
= 1.8V
V
OH
V
OL
Low Level Output Voltage
Output Source Current
Output Sink Current
High Level Output Voltage
Low Level Output Voltage
High Level Output Voltage
Low Level Output Voltage
The
●
denotes the specifications which apply over the
full operating temperature range, otherwise specifications are at T
A
= 25°C. (Note 4)
CONDITIONS
V
DD
= 3.3V
V
DD
= 3.3V
V
IN
= 0V to V
DD
(Note 7)
●
●
●
POWER REQUIRE E TS
SYMBOL
V
DD
P
SHDN
OV
DD
I
VDD
P
DIS
PARAMETER
Analog Supply Voltage
Shutdown Power
Output Supply Voltage
Analog Supply Current
Power Dissipation
The
●
denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at T
A
= 25°C. A
IN
= –1dBFS. (Note 9)
CONDITIONS
●
U W
U
U
MIN
2
TYP
MAX
UNITS
V
V
µA
pF
0.8
±10
1.5
V
DD
= 3.3V
V
DD
= 3.3V
V
OUT
= 0V
V
OUT
= 3.3V
V
DD
= 3.3V
V
DD
= 3.3V
V
DD
= 3.3V
V
DD
= 3.3V
I
O
= –10µA
I
O
= –200µA
●
I
O
= 160uA
I
O
= 1.6mA
●
3.1
3.299
3.29
0.01
0.10
–50
50
0.4
V
V
V
V
mA
mA
V
V
V
V
I
O
= –200µA
I
O
= 1.60mA
I
O
= –200µA
I
O
= 1.60mA
2.49
0.1
1.79
0.1
SHDN = V
DD
, CLK = V
DD
●
●
●
LTC2203
MIN
TYP
3.135
3.3
2
0.5
64
210
MAX
3.465
V
DD
TBD
TBD
MIN
3.135
0.5
LTC2202
TYP
3.3
2
42
140
MAX
3.465
V
DD
TBD
TBD
UNITS
V
mW
V
mA
mW
22032p
5
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