MAX3971A
+3.3V, 10.7Gbps Limiting Amplifier
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, VCC1, VCC2, VCC3 ......................-0.5V to +5.0 V
Voltage at IN+, IN-, DISABLE, CZ+, CZ-,
OUT+, OUT- .........................................+0.5V to (VCC + 0.5V)
Differential Voltage Between CZ+ and CZ- ...........................±1V
Differential Voltage Between IN+ and IN-...........................±2.5V
Continuous Power Dissipation (TA = +85°C)
20-Pin QFN (derate 20mW/°C above +85°C) .................1.3W
Operating Ambient Temperature Range .............-40°C to +85°C
Storage Temperature Range .............................-55°C to +150°C
Die Attach Temperature...................................................+400°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VCC = +3.0V to +3.6V, output load = 50
Ω to VCC, TA = 0°C to +85°C, unless otherwise noted. All AC parameters are measured with
a 223 - 1 PRBS pattern applied to the input at 10.7Gbps. Typical values are at VCC = +3.3V, TA = +25°C, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Supply Current
ICC
50
85
mA
Small-Signal Bandwidth
BW
10
GHz
Input Sensitivity
VIN-min
(Notes 1, 2)
2
5
mVP-P
Input Overload
VIN-max
(Note 1)
1200
mVP-P
Low-Frequency Cutoff
CZ = 0.1F (Note 1)
60
75
kHz
5mVP-P input (Notes 1, 3)
5.2
16.0
10mVP-P input (Notes 1, 3)
3.5
14.0
800mVP-P input (Notes 1, 3)
1.8
7.0
Deterministic Jitter
1200mVP-P input (Notes 1, 3)
1.9
11.0
ps
Random Jitter
20mVP-P < input < 1200mVP-P (Notes 1, 4)
0.6
1.1
psRMS
Transition Time
tr, tf
20% to 80%, differential output (Note 1)
20
30
ps
Data Input Impedance
Single ended
42
50
58
Ω
Data Output-Voltage Swing
Differential signal amplitude between
OUT+ and OUT-
190
240
400
mVP-P
Data Output Voltage when
Disabled
Differential signal amplitude
between OUT+ and OUT-
0.25
50
mVP-P
Data Output Common-Mode
Voltage
VCC -
75
mV
Data Output Impedance
Single ended
42
50
58
Ω
Data Output Offset when
DISABLE is High
75
200
mV
Disable Input Current
30
60
A
DISABLE High Voltage
VIH
2V
DISABLE Low Voltage
VIL
0.8
V
Disable Response Time
20
ns
Note 1: Guaranteed by design and characterization.
Note 2: The output signal amplitude at the sensitivity is > .95 the amplitude with large input.
Note 3: Deterministic jitter is measured with K28.5 pattern (0011 1110 1011 0000 0101) at 10.7Gbps. It is the peak-to-peak devia-
tion from the ideal time crossing, measured at the zero-level crossing of the differential output.
Note 4: For a bit-error rate of 10-12, the peak-to-peak random jitter is 14.1 the RMS random jitter.