FEATURES
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LTC2207-14/LTC2206-14
14-Bit, 105Msps/80Msps
ADCs
DESCRIPTIO
The LTC
®
2207-14/LTC2206-14 are 105Msps/80Msps,
sampling 14-bit A/D converters designed for digitizing
high frequency, wide dynamic range signals up to input
frequencies of 700MHz. The input range of the ADC can
be optimized with the PGA front end.
The LTC2207-14/LTC2206-14 are perfect for demanding
communications applications, with AC performance that
includes 77.3dB SNR and 98dB spurious free dynamic
range (SFDR). Ultralow jitter of 80fs
RMS
allows under-
sampling of high input frequencies with excellent noise
performance. Maximum DC specs include ±1.5LSB INL,
±1LSB DNL (no missing codes) over temperature.
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.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners. Patents Pending.
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Sample Rate: 105Msps/80Msps
77.3dBFS Noise Floor
98dB SFDR
SFDR >82dB at 250MHz (1.5V
P-P
Input Range)
PGA Front End (2.25V
P-P
or 1.5V
P-P
Input Range)
700MHz Full Power Bandwidth S/H
Optional Internal Dither
Optional Data Output Randomizer
Single 3.3V Supply
Power Dissipation: 947mW/762mW
Optional Clock Duty Cycle Stabilizer
Out-of-Range Indicator
Pin Compatible Family
105Msps: LTC2207 (16-Bit), LTC2207-14 (14-Bit)
80Msps: LTC2206 (16-Bit), LTC2206-14 (14-Bit)
65Msps: LTC2205 (16-Bit), LTC2205-14 (14-Bit)
40Msps: LTC2204 (16-Bit)
25Msps: LTC2203 (16-Bit) Single-Ended Clock
10Msps: LTC2202 (16-Bit) Single-Ended Clock
48-Pin 7mm
×
7mm QFN Package
APPLICATIO S
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Telecommunications
Receivers
Cellular Base Stations
Spectrum Analysis
Imaging Systems
ATE
TYPICAL APPLICATIO
3.3V
SENSE
V
CM
2.2µF
1.25V
COMMON MODE
BIAS VOLTAGE
INTERNAL ADC
REFERENCE
GENERATOR
OV
DD
0.5V TO 3.6V
0.1µF
OF
CLKOUT
+
CLKOUT
–
D13
•
•
•
D0
AMPLITUDE (dBFS)
3.3V
0.1µF
0.1µF
22076 TA01
AIN
+
ANALOG
INPUT
AIN
–
+
S/H
AMP
–
CLOCK/DUTY
CYCLE
CONTROL
ENC
+
ENC
–
14-BIT
PIPELINED
ADC CORE
CORRECTION
LOGIC AND
SHIFT REGISTER
OUTPUT
DRIVERS
OGND
V
DD
GND
PGA
SHDN
DITH
MODE
OE
RAND
0.1µF
ADC CONTROL INPUTS
U
U
U
LTC2207-14: 32K Point FFT,
f
IN
= 14.86MHz, –1dBFS,
PGA = 0, 105Msps
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
0
10
30
40
20
FREQUENCY (MHz)
50
22076 TA01b
220714614fa
1
LTC2207-14/LTC2206-14
ABSOLUTE MAXIMUM RATINGS
OV
DD
= V
DD
(Notes 1, 2)
PACKAGE/ORDER INFORMATION
48 GND
47 PGA
46 RAND
45 MODE
44 OE
43 OF
42 D13
41 D12
40 D11
39 D10
38 OGND
37 OV
DD
SENSE 1
V
CM
2
V
DD
3
V
DD
4
GND 5
AIN+ 6
AIN
–
7
GND 8
ENC
+
9
ENC
–
10
GND 11
V
DD
12
49
36 OV
DD
35 D9
34 D8
33 D7
32 D6
31 OGND
30 CLKOUT+
29 CLKOUT
–
28 D5
27 D4
26 D3
25 OV
DD
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
TOP VIEW
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
LTC2207-14C/LTC2206-14C .................... 0°C to 70°C
LTC2207-14I/LTC2206-14I .................. –40°C to 85°C
Storage Temperature Range .................. –65°C to 150°C
Digital Output Supply Voltage (OV
DD
) .......... –0.3V to 4V
ORDER PART NUMBER
LTC2207CUK-14
LTC2206CUK-14
LTC2207IUK-14
LTC2206IUK-14
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/
Consult factory for parts specified with wider operating temperature ranges.
*The temperature grade is identified by a label on the shipping container.
CONVERTER CHARACTERISTICS
The
●
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 4)
CONDITIONS
Differential Analog Input (Note 5)
Differential Analog Input
(Note 6)
External Reference
Internal Reference
External Reference
●
●
●
●
PARAMETER
Integral Linearity Error
Differential Linearity Error
Offset Error
Offset Drift
Gain Error
Full-Scale Drift
Transition Noise
V
DD
13
V
DD
14
GND 15
SHDN 16
DITH 17
NC 18
NC 19
D0 20
D1 21
D2 22
OGND 23
OV
DD
24
UK PART MARKING*
LTC2207UK-14
LTC2206UK-14
LTC2207UK-14
LTC2206UK-14
MIN
TYP
±0.4
±0.1
±1
±10
±0.2
±30
±15
0.8
MAX
±1.5
±1
±10.3
±2.3
UNITS
LSB
LSB
mV
μV/
°C
%FS
ppm/°C
ppm/°C
LSB
RMS
220714614fa
2
LTC2207-14/LTC2206-14
The
●
denotes the specifications which apply over the full operating temperature range, otherwise
specifications are at T
A
= 25°C. (Note 4)
SYMBOL
V
IN
V
IN, CM
I
IN
I
SENSE
I
MODE
C
IN
t
AP
t
JITTER
CMRR
BW-3dB
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
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
(Note 8)
0V ≤ SENSE ≤ V
DD
(Note 9)
Sample Mode ENC
+
< ENC
–
Hold Mode ENC
+
> ENC
–
●
●
●
●
ANALOG INPUT
MIN
1
–1
–4
TYP
1.5 to 2.25
1.25
MAX
1.5
1
4
UNITS
V
P-P
V
µA
µA
µA
pF
pF
ns
fs
RMS
dB
MHz
10
6.7
1.8
1
80
1V < (A
IN+
= A
IN–
) <1.5V
R
S
≤ 25Ω
80
700
DYNAMIC ACCURACY
SYMBOL PARAMETER
SNR
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)
CONDITIONS
MIN
LTC2206-14
TYP
MAX
77.3
75.1
●
MIN
LC2207-14
TYP
77.3
75.1
MAX UNITS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
Signal-to-Noise Ratio 5MHz Input (2.25V Range, PGA = 0)
5MHz Input (1.5V Range, PGA = 1)
15MHz Input (2.25V Range, PGA = 0), T
A
= 25°C
15MHz Input (2.25V Range, PGA = 0)
15MHz Input (1.5V Range, PGA = 1)
70MHz Input (2.25V Range, PGA = 0)
70MHz Input (1.5V Range, PGA = 1)
140MHz Input (2.25V Range, PGA = 0)
140MHz Input (1.5V Range, PGA = 1), T
A
= 25°C
140MHz Input (1.5V Range, PGA = 1)
170MHz Input (2.25V Range, PGA = 0)
170MHz Input (1.5V Range, PGA = 1)
73.1
72.9
76
75.8
77.2
77.2
75
76.9
75
76.2
74.5
74.6
75.8
75.1
98
98
76
75.8
77.2
77.2
75
76.9
75
●
73.1
72.9
76.2
74.5
74.6
75.8
75.1
98
98
SFDR
Spurious Free
Dynamic Range
2
nd
or 3
rd
Harmonic
5MHz Input (2.25V Range, PGA = 0)
5MHz Input (1.5V Range, PGA = 1)
15MHz Input (2.25V Range, PGA = 0), T
A
= 25°C
15MHz Input (2.25V Range, PGA = 0)
15MHz Input (1.5V Range, PGA = 1)
70MHz Input (2.25V Range, PGA = 0)
70MHz Input (1.5V Range, PGA = 1)
140MHz Input (2.25V Range, PGA = 0)
140MHz Input (1.5V Range, PGA = 1), T
A
= 25°C
140MHz Input (1.5V Range, PGA = 1)
170MHz Input (2.25V Range, PGA = 0)
170MHz Input (1.5V Range, PGA = 1)
82
81
●
85
84
93
93
98
90
94
85
90
90
81
85
85
84
93
93
98
90
94
●
82
81
85
90
90
81
85
220714614fa
3
LTC2207-14/LTC2206-14
DYNAMIC ACCURACY
SYMBOL PARAMETER
SFDR
Spurious Free
Dynamic Range
4
th
Harmonic
or Higher
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)
CONDITIONS
5MHz Input (2.25V Range, PGA = 0)
5MHz Input (1.5V Range, PGA = 1)
15MHz Input (2.25V Range, PGA = 0)
15MHz Input (1.5V Range, PGA = 1)
70MHz Input (2.25V Range, PGA = 0)
70MHz Input (1.5V Range, PGA = 1)
140MHz Input (2.25V Range, PGA = 0)
140MHz Input (1.5V Range, PGA = 1)
170MHz Input (2.25V Range, PGA = 0)
170MHz Input (1.5V Range, PGA = 1)
●
●
MIN
LTC2206-14
TYP
MAX
100
100
MIN
LC2207-14
TYP
100
100
MAX UNITS
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
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
dBFS
dBFS
90
100
100
100
100
90
100
100
100
100
86.5
95
97
89
93
77
74.9
86.5
95
97
89
93
77
74.9
S/(N+D) Signal-to-Noise
Plus Distortion Ratio
5MHz Input (2.25V Range, PGA = 0)
5MHz Input (1.5V Range, PGA = 1)
15MHz Input (2.25V Range, PGA = 0), T
A
= 25°C
15MHz Input (2.25V Range, PGA = 0
15MHz Input (1.5V Range, PGA = 1)
70MHz Input (2.25V Range, PGA = 0)
70MHz Input (1.5V Range, PGA = 1)
140MHz Input (2.25V Range, PGA = 0)
140MHz Input (1.5V Range, PGA = 1), T
A
= 25°C
140MHz Input (1.5V Range, PGA = 1)
170MHz Input (2.25V Range, PGA = 0)
170MHz Input (1.5V Range, PGA = 1)
72.7
72.5
●
75.9
75.7
77.1
77.1
75.3
76.7
75
74.8
74.5
74.5
74.1
73.7
100
100
100
100
100
100
97
97
96
96
108
108
75.9
75.7
77.1
77.1
75.3
76.7
75
●
72.7
72.5
74.8
74.5
74.5
74.4
73.7
100
100
100
100
100
100
97
97
96
96
108
108
SFDR
Spurious Free
Dynamic Range
at –25dBFS
Dither “OFF”
5MHz Input (2.25V Range, PGA = 0)
5MHz Input (1.5V Range, PGA = 1)
15MHz Input (2.25V Range, PGA = 0)
15MHz Input (1.5V Range, PGA = 1)
70MHz Input (2.25V Range, PGA = 0)
70MHz Input (1.5V Range, PGA = 1)
140MHz Input (2.25V Range, PGA = 0)
140MHz Input (1.5V Range, PGA = 1)
170MHz Input (2.25V Range, PGA = 0)
170MHz Input (1.5V Range, PGA = 1)
SFDR
Spurious Free
Dynamic Range
at –25dBFS
Dither “ON”
5MHz Input (2.25V Range, PGA = 0)
5MHz Input (1.5V Range, PGA = 1)
15MHz Input (2.25V Range, PGA = 0)
15MHz Input (1.5V Range, PGA = 1)
70MHz Input (2.25V Range, PGA = 0)
70MHz Input (1.5V Range, PGA = 1)
140MHz Input (2.25V Range, PGA = 0)
140MHz Input (1.5V Range, PGA = 1)
170MHz Input (2.25V Range, PGA = 0)
170MHz Input (1.5V Range, PGA = 1)
●
95
107
107
107
107
102
102
100
100
95
107
107
107
107
102
102
100
100
220714614fa
4
LTC2207-14/LTC2206-14
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
●
COMMON MODE BIAS CHARACTERISTICS
MIN
1.15
TYP
1.25
40
1
2
MAX
1.35
UNITS
V
ppm/°C
mV/ V
Ω
The
●
denotes the specifications which apply over the
full operating temperature range, otherwise specifications are at T
A
= 25°C. (Note 4)
SYMBOL
PARAMETER
ENCODE INPUTS (ENC
+
, ENC
–
)
V
ID
Differential Input Voltage
V
ICM
Common Mode Input Voltage
R
IN
Input Resistance
C
IN
Input Capacitance
LOGIC INPUTS (DITH, PGA, SHDN, RAND)
V
IH
High Level Input Voltage
V
IL
Low Level Input Voltage
I
IN
Input Current
C
IN
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
CONDITIONS
(Note 7)
Internally Set
Externally Set (Note 7)
(See Figure 2)
(Note 7)
V
DD
= 3.3V
V
DD
= 3.3V
V
IN
= 0V to V
DD
(Note 7)
●
●
●
●
DIGITAL INPUTS AND DIGITAL OUTPUTS
MIN
0.2
TYP
MAX
UNITS
V
V
1.6
1.4
6
3
2
0.8
±10
1.5
3.0
k
Ω
pF
V
V
µA
pF
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
= 160µA
I
O
= 1.6mA
●
●
3.1
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
I
O
= –200µA
I
O
= 1.60mA
I
O
= –200µA
I
O
= 1.60mA
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 PARAMETER
V
DD
P
SHDN
OV
DD
I
VDD
P
DIS
Analog Supply Voltage
Shutdown Power
Output Supply Voltage
Analog Supply Current
Power Dissipation
DC Input
DC Input
SHDN = V
DD
●
●
●
POWER REQUIREMENTS
CONDITIONS
●
MIN
3.135
0.5
LTC2206-14
TYP
3.3
0.2
MAX
3.465
3.6
MIN
3.135
0.5
LTC2207-14
TYP
3.3
0.2
MAX
3.465
3.6
UNITS
V
mW
V
mA
mW
231
762
275
908
287
947
350
1155
220714614fa
5
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