MAX3275 Datasheet, PDF (3/9 Pages) Maxim Integrated Products – Low-Noise, Fibre Channel Transimpedance Amplifiers

Low-Noise, Fibre Channel Transimpedance
Amplifiers
ELECTRICAL CHARACTERISTICS (continued)
(V_CC = +3.0V to +3.6V, T_A = 0°C to +85°C. Typical values are at V_CC = +3.3V, source capacitance (C_IN) = 0.85pF, T_A = +25°C,
unless otherwise noted.) (Notes 1, 2)
Note 1: Die parameters are production tested at room temperature only, but are guaranteed by design and characterization from
0°C to +85°C.
Note 2: Source capacitance represents the total capacitance at the IN pad during characterization of the noise and bandwidth
parameters.
Note 3: Guaranteed by design and characterization.
Note 4: Measured using an RF-power meter with no pattern applied at the input. The TIA output is bandwidth limited for
measurement using a 4th-order Bessel Thompson filter. The -3dB frequency of the filter matches the frequency (0.8GHz,
1.6GHz, or 2.1GHz) for the specified noise BW.
Note 5: DC offset and deterministic jitter may exceed specification if AC or DC overload conditions are exceeded.
Note 6: Using fibre channel K28.5± pattern. The input bandwidth is limited to 0.75 ✕ (2.125Gbps) by a 4th-order Bessel Thompson
filter. Measured differentially across an AC-coupled 100Ω external load.
Note 7: K28.5± pattern: (00111110101100000101).
Note 8: Gain may vary ±5% relative to reference measured with 30µA_P-P input.
Note 9: Production tested with 1mA_P-P input.
Note 10: Using a K28.7 (0011111000) pattern. Measured differentially across an AC-coupled 100Ω external load.
Note 11: Power-supply rejection PSR = -20log(∆V_OUT/∆V_CC), where ∆V_OUT is the differential output voltage and ∆V_CC is the noise
on V_CC.
Typical Operating Characteristics
(V_CC = +3.3V, C_IN = 0.85pF, T_A = +25°C, unless otherwise noted.)
INPUT-REFERRED NOISE
vs. TEMPERATURE
350
340 CIN IS SOURCE CAPACITANCE
330 ^{PRESENTED TO DIE, INCLUDING}
320 ^{PIN DIODE, AND PARASITIC}
310 ^{INTERCONNECT CAPACITANCE}
300
290
280
C_IN = 0.85pF
270
260
250
C_IN = 0.6pF
240
230
220
210
BW = 1.6GHz
200
0
20
40
60
80
100
AMBIENT TEMPERATURE (°C)
INPUT-REFERRED NOISE
vs. TEMPERATURE
250
240
C_IN IS SOURCE CAPACITANCE
PRESENTED TO DIE, INCLUDING
230 PIN DIODE, AND PARASITIC
INTERCONNECT CAPACITANCE
220
210
200
C_IN = 0.85pF
190
C_IN = 0.6pF
180
170
160
150
0
BW = 0.8GHz
20
40
60
80 100
AMBIENT TEMPERATURE (°C)
FREQUENCY RESPONSE
71
69
67
65
63
61
59
57
100M
1G
10G
FREQUENCY (Hz)
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