that includes a high-speed 16-bit A/D converter, matching
network, anti-aliasing filter and a low noise, differential
amplifier with fixed gain. It is designed for digitizing wide
dynamic range signals with an intermediate frequency (IF)
range up to 300MHz. The amplifier allows either AC- or
DC-coupled input drive. A low-pass or bandpass filter
network can be implemented with various bandwidths.
Contact Linear Technology regarding semi-custom con-
figurations.
The LTM9001 is perfect for IF receivers in demanding
communications applications, with AC performance that
includes 72dBFS noise floor and 82dB spurious free dy-
namic range (SFDR) at 162.5MHz (LTM9001-AA).
The digital outputs 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 buses running at half data rate. A separate
output power supply allows the CMOS output swing to
range from 0.5V to 3.3V.
The differential ENC
+
and ENC
–
inputs may be driven with
a sine wave, PECL, LVDS, TTL or CMOS inputs. An optional
clock duty cycle stabilizer allows high performance at full
speed with a wide range of clock duty cycles.
n
n
n
n
n
n
n
n
n
Integrated 16-Bit, High-Speed ADC, Passive Filter
and Fixed Gain Differential Amplifier
Up to 300MHz IF Range
Low-Pass and Bandpass Filter Versions
Low Noise, Low Distortion Amplifiers
Fixed Gain: 8dB, 14dB, 20dB or 26dB
50Ω, 200Ω or 400Ω Input Impedance
72dB SNR, 82dB SFDR (LTM9001-AA)
Integrated Bypass Capacitance, No External
Components Required
Optional Internal Dither
Optional Data Output Randomizer
LVDS or CMOS Outputs
3.3V Single Supply
Power Dissipation: 1.65W
Clock Duty Cycle Stabilizer
11.25mm
×
11.25mm
×
2.32mm LGA Package
APPLICATIONS
n
n
n
n
Telecommunications
High Sensitivity Receivers
Cellular Base Stations
Spectrum Analyzers
L,
LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
TYPICAL APPLICATION
Simplified IF Receiver Channel
V
CC
SENSE
V
DD
= 3.3V
64k Point FFT, F
IN
= 162.4MHz,
–1dBFS, PGA = 1
0
LTM9001
0V
DD
= 0.5V TO 3.6V
AMPLITUDE (dBFS)
–20
–40
–60
–80
–100
OGND
–120
HD3
HD2
D15
IN
SAW
LO
IN
+
DIFFERENTIAL
FIXED GAIN
AMPLIFIER
GND
ENC
+
ENC
–
ADC CONTROL PINS
–
RF
ANTI-ALIAS
FILTER
16-BIT
130Msps ADC
•
•
•
D0
CLKOUT
OF
CMOS
OR
LVDS
9001 TA01
0
12288
20480
28672
4096
FFT BIN NUMBER (32k TOTAL)
9001 TA01b
9001fa
1
LTM9001
ABSOLUTE MAXIMUM RATINGS
(Notes 1, 2)
PIN CONFIGURATION
ALL ELSE
= GND
TOP VIEW
CONTROL
1
J
IN
–
IN
+
H
G
F
V
CC
E
DNC D
ENC
+
C
ENC
–
B
A
CONTROL
V
DD
OGND OV
DD
OGND
OV
DD
2
3
4
DATA
5
6
7
8
9
OGND
Supply Voltage (V
CC
) ................................ –0.3V to 3.6V
Supply Voltage (V
DD
) ................................... –0.3V to 4V
Digital Output Supply Voltage (OV
DD
) .......... –0.3V to 4V
Analog Input Current (IN
+
, IN
–
) ............................±10mA
Digital Input Voltage
(Except AMPSHDN) ..................–0.3V to (V
DD
+ 0.3V)
Digital Input Voltage
(AMPSHDN)..............................–0.3V to (V
CC
+ 0.3V)
Digital Output Voltage ................ –0.3V to (OV
DD
+ 0.3V)
Operating Temperature Range
LTM9001C................................................ 0°C to 70°C
LTM9001I............................................. –40°C to 85°C
Storage Temperature Range................... –45°C to 125°C
Maximum Junction Temperature........................... 125°C
LGA PACKAGE
T
JMAX
= 125°C,
θ
JA
= 15°C/W,
θ
JC
= 19°C/W
θ
JA
DERIVED FROM 60mm
×
70mm PCB WITH 4 LAYERS
WEIGHT = 0.71g
ORDER INFORMATION
LEAD FREE FINISH
LTM9001CV-AA#PBF
LTM9001IV-AA#PBF
LTM9001CV-BA#PBF
LTM9001IV-BA#PBF
PART MARKING*
LTM9001V-AA
LTM9001V-AA
LTM9001V-BA
LTM9001V-BA
PACKAGE DESCRIPTION
81-Lead (11.25mm × 11.25mm × 2.3mm) LGA
81-Lead (11.25mm × 11.25mm × 2.3mm) LGA
81-Lead (11.25mm × 11.25mm × 2.3mm) LGA
81-Lead (11.25mm × 11.25mm × 2.3mm) LGA
TEMPERATURE RANGE
0°C to 70°C
–40°C to 85°C
0°C to 70°C
–40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
This product is only offered in trays. For more information go to:
http://www.linear.com/packaging/
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 4)
SYMBOL
G
DIFF
PARAMETER
Gain
CONDITIONS
DC, LTM9001-AA
f
IN
= 162.5MHz (Note 3)
DC, LTM9001-BA
f
IN
= 140MHz (Note 3)
G
TEMP
V
INCM
V
IN
Gain Temperature Drift
Input Common Mode Voltage Range
Input Voltage Range at –1dBFS
V
IN
= Maximum, (Note 3)
(IN
+
+ IN
–
)/2
LTM9001-AA at 162.5MHz
LTM9001-BA at 140MHz
l
l
ELECTRICAL CHARACTERISTICS
MIN
19.1
7.1
TYP
19.7
19
8.2
7.8
2
1.0–1.6
233
820
MAX
20.3
9.4
UNITS
dB
dB
dB
dB
mdB/°C
V
mV
P-P
mV
P-P
9001fa
2
LTM9001
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 4)
SYMBOL
R
INDIFF
C
INDIFF
V
OS
PARAMETER
Differential Input Impedance
Differential Input Capacitance
Offset Error (Note 6)
Offset Drift
Full-Scale Drift
CMRR
I
SENSE
I
MODE
I
LVDS
t
AP
t
JITTER
Common Mode Rejection Ratio
SENSE Input Leakage Current
MODE Pin Pull-Down Current to GND
LVDS Pin Pull-Down Current to GND
Sample-and-Hold Acquisition Delay Time
Sample-and-Hold Acquisition Delay Time Jitter
0V < SENSE < V
DD
l
ELECTRICAL CHARACTERISTICS
CONDITIONS
LTM9001-AA
LTM9001-BA
Includes Parasitic
Including Amplifier and ADC (LTM9001-AA)
Including Amplifier and ADC (LTM9001-BA)
Including Amplifier and ADC
Internal Reference
External Reference
l
l
MIN
TYP
200
400
1
MAX
UNITS
Ω
Ω
pF
–8
–20
–3.2
–10
±10
±30
±15
60
–0.5
–0.5
mV
mV
μV/°C
ppm/°C
ppm/°C
dB
–3
10
10
1
70
3
μA
μA
μA
ns
fs
RMS
CONVERTER CHARACTERISTICS
PARAMETER
Resolution (No Missing Codes)
Integral Linearity Error
Differential Linearity Error
Transition Noise
The
l
indicates specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C.
CONDITIONS
l
MIN
16
l
l
l
TYP
±2.4
±0.3
1
MAX
±8
±10
±1
UNITS
Bits
LSB
LSB
LSB
LSB
RMS
Differential Input LTM9001-AA (Notes 5, 7)
Differential Input LTM9001-BA (Notes 5, 7)
Differential Input (Notes 5, 7)
External Reference
DYNAMIC ACCURACY
SYMBOL
SNR
PARAMETER
Signal-to-Noise Ratio
The
l
indicates specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C. A
IN
= –1dBFS. (Note 4)
CONDITIONS
162.5MHz Input (PGA = 0) LTM9001-AA
162.5MHz Input (PGA = 1) LTM9001-AA
140MHz Input (PGA = 0) LTM9001-BA
140MHz Input (PGA = 1) LTM9001-BA
l
l
MIN
67.2
67
TYP
72
68.5
69.2
67.2
78
82
72
82
95
95
95
104
MAX
UNITS
dBFS
dBFS
dBFS
dBFS
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
SFDR
Spurious Free Dynamic Range, 2nd or 3rd
Harmonic
162.5MHz Input (PGA = 0) LTM9001-AA
162.5MHz Input (PGA = 1) LTM9001-AA
140MHz Input (PGA = 0) LTM9001-BA
140MHz Input (PGA = 1) LTM9001-BA
l
l
72
64
SFDR
Spurious Free Dynamic Range 4th or Higher
162.5MHz Input (PGA = 0) LTM9001-AA
162.5MHz Input (PGA = 1) LTM9001-AA
140MHz Input (PGA = 0) LTM9001-BA
140MHz Input (PGA = 1) LTM9001-BA
l
l
86
86
9001fa
3
LTM9001
DYNAMIC ACCURACY
SYMBOL
S/(N+D)
PARAMETER
Signal-to-Noise Plus Distortion Ratio
The
l
indicates specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C. A
IN
= –1dBFS. (Note 4)
CONDITIONS
162.5MHz Input (PGA = 0) LTM9001-AA
162.5MHz Input (PGA = 1) LTM9001-AA
140MHz Input (PGA = 0) LTM9001-BA
140MHz Input (PGA = 1) LTM9001-BA
l
l
MIN
67
64
TYP
71.4
68
67.5
66.4
90
93
91
92
MAX
UNITS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dB
dB
dBm
dBm
SFDR
Spurious Free Dynamic Range at –25dBFS,
Dither “OFF”
Spurious Free Dynamic Range at –15dBFS,
Dither “OFF”
162.5MHz Input (PGA = 0) LTM9001-AA
162.5MHz Input (PGA = 1) LTM9001-AA
140MHz Input (PGA = 0) LTM9001-BA
140MHz Input (PGA = 1) LTM9001-BA
162.5MHz Input (PGA = 0) LTM9001-AA
162.5MHz Input (PGA = 1) LTM9001-AA
140MHz Input (PGA = 0) LTM9001-BA
140MHz Input (PGA = 1) LTM9001-BA
f
IN
= 162.5MHz LTM9001-AA
f
IN
= 140MHz LTM9001-BA
f
IN
= 162.5MHz LTM9001-AA
f
IN
= 140MHz LTM9001-BA
l
l
SFDR
Spurious Free Dynamic Range at –25dBFS,
Dither “ON”
Spurious Free Dynamic Range at –15dBFS,
Dither “ON”
90
90
95
100
95
96
–78
–84
24
29.2
IMD
3
IIP
3
Third Order Intermodulation Distortion;
1MHz Tone Spacing, 2 Tones at –7dBFS
Equivalent Third Order Input Intercept Point,
2 Tone
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 4)
SYMBOL
V
ID
V
ICM
R
IN
C
IN
V
IH
V
IL
I
IN
C
IN
V
IH
V
IL
I
IH
I
IL
C
IN
OV
DD
= 3.3V
V
OH
V
OL
High Level Output Voltage
Low Level Output Voltage
V
DD
= 3.3V, I
O
= –10μA
V
DD
= 3.3V, I
O
= –200μA
V
DD
= 3.3V, I
O
= 10μA
V
DD
= 3.3V, I
O
= 1.6mA
l
l
DIGITAL INPUTS AND OUTPUTS
PARAMETER
Differential Input Voltage
Common Mode Input Voltage
Input Resistance
Input Capacitance
High Level Input Voltage
Low Level Input Voltage
Input Current
Input Capacitance
High Level Input Voltage
Low Level Input Voltage
Input High Current
Input Low Current
Input Capacitance
CONDITIONS
l
MIN
0.2
TYP
MAX
UNITS
V
Encode Inputs (ENC
+
, ENC
–
)
Internally Set
Externally Set
(Note 7)
V
DD
= 3.3V
V
DD
= 3.3V
V
IN
= 0V to V
DD
(Note 7)
V
CC
= 3.3V
V
CC
= 3.3V
V
IN
= 2V
V
IN
= 0.8V
(Note 7)
l
l
l
l
l
1.6
1.2
100
3
2
0.8
±10
1.5
2
0.8
1.3
0.1
1.5
3.1
V
V
Ω
pF
V
V
μA
pF
V
V
μA
μA
pF
Logic Inputs (DITH, PGA, ADCSHDN, RAND)
Logic Inputs (AMPSHDN)
Logic Outputs (CMOS Mode)
3.299
3.29
0.01
0.1
0.4
V
V
V
V
9001fa
3.1
4
LTM9001
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 4)
SYMBOL
I
SOURCE
I
SINK
OV
DD
= 2.5V
V
OH
V
OL
OV
DD
= 1.8V
V
OH
V
OL
Standard LVDS
V
OD
V
OS
Low Power LVDS
V
OD
V
OS
Differential Output Voltage
Output Common Mode Voltage
100Ω Differential Load
100Ω Differential Load
l
l
DIGITAL INPUTS AND OUTPUTS
PARAMETER
Output Source Current
Output Sink Current
High Level Output Voltage
Low Level Output Voltage
High Level Output Voltage
Low Level Output Voltage
CONDITIONS
V
OUT
= 0V
V
OUT
= 3.3V
V
DD
= 3.3V, I
O
= –200μA
V
DD
= 3.3V, I
O
= 1.6mA
V
DD
= 3.3V, I
O
= –200μA
V
DD
= 3.3V, I
O
= 1.6μA
MIN
TYP
–50
50
2.49
0.1
1.79
0.1
MAX
UNITS
mA
mA
V
V
V
V
Logic Outputs (LVDS Mode)
Differential Output Voltage
Output Common Mode Voltage
100Ω Differential Load
100Ω Differential Load
l
l
247
1.125
125
1.125
350
1.2
175
1.2
454
1.375
250
1.375
mV
V
mV
V
The
l
denotes the specifications which apply over the full operating temperature
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