6.4 DC Electrical Characteristics
over recommended operating conditions with VOD = 300 mVPP (unless otherwise noted); typical values are at VCC = 3.3 V and TA = 25°C
PARAMETER |
TEST CONDITIONS |
MIN |
TYP |
MAX |
UNIT |
TEST LEVEL(3) |
VCC |
Supply voltage |
|
2.8 |
3.3 |
3.47 |
V |
A |
ICC |
Supply current |
Per channel, 30-μAPP input, 27°C |
22 |
|
42 |
mA |
A |
Per channel, 30-μAPP input, maximum 85°C |
|
30 |
|
C |
Per channel, 30-μAPP input, maximum 100°C |
|
36 |
|
C |
P(RX) |
Receiver power dissipation |
Per channel, 30-μAPP input, 27°C |
73 |
|
139 |
mW |
A |
Per channel, 30-μAPP input, maximum 85°C |
|
99 |
|
C |
Per channel, 30-μAPP input, maximum 100°C |
|
118 |
|
C |
VIN |
Input bias voltage |
|
0.75 |
0.85 |
0.98 |
V |
A |
ROUT |
Output resistance |
Single-ended to VCC |
40 |
50 |
60 |
Ω |
A |
V(FILTER) |
Photodiode bias voltage(1) |
|
2.8 |
3.2 |
|
V |
A |
A(RSSI_IB) |
RSSI gain |
Resistive load to GND(2) |
0.49 |
0.5 |
0.54 |
A/A |
A |
|
RSSIx feature output offset current (no light) |
|
0 |
|
2.5 |
µA |
A |
(1) Regulated voltage is typically 100 mV lower than VCC.
(2) The RSSIx output is a current output that requires a resistive load to ground (GND). The voltage gain can be adjusted for the intended application by choosing the external resistor; however, for proper operation, ensure that the voltage at RSSIx does not exceed VCC – 0.65 V.
(3) Test levels: (A) 100% tested at 25°C. Overtemperature limits set by characterization and simulation. (B) Limits set by characterization and simulation. (C) Typical value only for information.
6.5 AC Electrical Characteristics
over recommended operating conditions with VOD = 300 mVPP (unless otherwise noted); typical values are at VCC = 3.3 V and TA = 25°C
PARAMETER |
TEST CONDITIONS |
MIN |
TYP |
MAX |
UNIT |
TEST LEVEL(5) |
Z21 |
Small-signal transimpedance |
25-μAPP input signal |
|
7.5 |
|
kΩ |
C |
f(3dB-H) |
–3-dB bandwidth |
25-μAPP input signal(1) |
|
17.5 |
|
GHz |
C |
f(3dB-L) |
Low-frequency, –3-dB bandwidth |
|
|
30 |
|
kHz |
C |
iN(IN) |
Input-referred RMS noise |
CPD = 0.1 pF, 28-GHz BT4 filter(2) |
|
2 |
|
μA |
C |
DJ |
Deterministic jitter |
35 µAPP < iIN < 250 µAPP
(27.95 Gbps, PRBS9 pattern) |
|
2 |
|
psPP |
C |
250 µAPP < iIN < 500 µAPP
(27.95 Gbps, PRBS9 pattern) |
|
2 |
|
C |
500 µAPP < iIN < 2900 µAPP
(27.95 Gbps, PRBS9 pattern) |
|
4 |
|
C |
VOD |
Differential output voltage |
500-mVPP setting |
250 |
500 |
700 |
mVPP |
C |
|
Crosstalk |
Between adjacent channels, up to 20 GHz(3) |
|
–40 |
|
dB |
C |
|
RSSIx response time |
|
|
1 |
|
μs |
C |
PSRR |
Power-supply rejection ratio |
f < 10 MHz(4) |
|
–15 |
|
dB |
C |
(1) The small-signal bandwidth is specified over process corners, temperature, and supply voltage variation. The assumed photodiode capacitance is 0.1 pF and the bond-wire inductance is 0.3 nH. The small-signal bandwidth strongly depends on environmental parasitics. Careful attention to layout parasitics and external components is necessary to achieve optimal performance.
(2) Input-referred RMS noise is (RMS output noise) / (gain at 100 MHz).
(3) Die only, no wire bonds.
(4) PSRR is the differential output amplitude divided by the voltage ripple on the supply. No input current at INx.
(5) Test levels: (A) 100% tested at 25°C. Overtemperature limits set by characterization and simulation. (B) Limits set by characterization and simulation. (C) Typical value only for information.