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SA5225 Datasheet, PDF (4/10 Pages) NXP Semiconductors – Fiber optic postamplifier
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Philips Semiconductors
Fiber optic postamplifier
Product specification
SA5225
DC ELECTRICAL CHARACTERISTICS
Min and Max limits apply over operating temperature at VCC = 5V ±10%, unless otherwise specified.
Typical data apply at TA = 25°C and VCC = +5V.
SYMBOL
PARAMETER
TEST CONDITIONS
Min
Input signal voltage
VIN
single-ended
differential
0.002
0.004
VOS
Input offset voltage2
VN
Input RMS noise2
VTH
Input level-detect programmability single-en-
ded
VIN = 200kHz square wave
2
VHYS
Level-detect hysteresis3
2
ICC
VCCA + VCCE supply current
No ECL loading
IINL
JAM input current
Pin 8 = 0V
–10
VIH
Minimum input for JAM = high1
–1.165
VIL
Maximum input for JAM = low1
VOH4
Status pins
VOL4
Status pins
NOTES:
1. These ECL specifications are referenced to the VCCE rail and apply for TA = 0°C to 85°C.
2. Guaranteed by design.
3. Also see the SA5224 which has 5dB ±1dB hysteresis for FDDI compatibility.
4. Valid for Status pins only (#9, 10).
–1.0
–1.95
Table 1. 10K ECL Voltage Levels (referenced to VCCE) (Pins 12 & 13 only)
PARAMETER
–30°C
0°C
25°C
75°C
VOHMAX
–0.890
–0.840
–0.810
–0.735
VOHMIN
–1.060
–1.020
–0.980
–0.920
VOLMAX
–1.650
–1.630
–1.630
–1.600
VOLMIN
–1.890
–1.950
–1.950
–1.950
SA5225
Typ
3
27
Max
1.5
3.0
50
60
12
4
35
10
–1.490
–0.81
–1.63
UNIT
VP-P
µV
µV
mVP-P
dB
mA
µA
VDC
VDC
VDC
VDC
85°C
–0.700
–0.890
–1.615
–1.920
UNIT
VDC
VDC
VDC
VDC
AC ELECTRICAL CHARACTERISTICS
Min and Max limits apply for 4.5 ≤ VCC ≤ 5.5V.
Typical data apply at TA = 25°C and VCC = +5V.
SYMBOL
PARAMETER
TEST CONDITIONS
SA5225
Min
Typ
Max
BW1
BW2
RIN
CIN
tr, tf
Lower –3dB bandwidth
Upper –3dB bandwidth
Input resistance
Input capacitance
ECL output1
risetime,
falltime
CAZ = 0.1µF
Pin 4 or 5
Pin 4 or 5
RL = 50Ω
To VCCE – 2V
20–80%
0.5
1.0
1.5
90
120
150
2.9
4.5
7.6
2.5
1.2
2.2
tPWD Pulsewidth distortion
0.3
RAZ
Auto zero output resistance
Pin 1 or 2
155
250
423
RF
Level-detect filter resistance
Pin 7
14
24
41
tLD
Level-detect time constant
CF = 0
0.5
1.0
2.0
NOTE:
1. Both outputs should be terminated identically to minimize differential feedback to the device inputs on a PC board or substrate.
UNIT
kHz
MHz
kΩ
pF
ns
nsP-P
kΩ
kΩ
µs
1998 Oct 07
4
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