參數(shù)資料
型號(hào)： 935263836118
廠商： NXP SEMICONDUCTORS
元件分類： 其它接口
英文描述： SPECIALTY INTERFACE CIRCUIT, PQFP32
封裝： PLASTIC, SOT-401, LQFP-32
文件頁(yè)數(shù)： 11/35頁(yè)
文件大小： 208K
代理商： 935263836118
2000 Feb 22
19
Philips Semiconductors
Product specication
SDH/SONET STM1/OC3 laser drivers
TZA3031AHL; TZA3031BHL;
TZA3031U
Notes
1. Supply current:
a) The values do not include the modulation and bias currents through pins LA, LAQ and BIAS.
b) Minimum value refers to VTONE = 1.4 V at Io(mod)(min) and VTZERO = 1.4 V at IO(BIAS)(min).
c) Maximum value refers to VTONE = 3.4 V at Io(mod)(max) and VTZERO = 3.4 V at IO(BIAS)(max).
d) A first order estimate of the typical value of ICC(tot) as a function of Tj, Io(mod), and IO(BIAS) is:
ICC(tot) =
.
2. Power dissipation:
a) The value for Ptot includes the modulation and bias currents through pins LA, LAQ and BIAS.
b) The minimum value for Ptot is the on-chip dissipation when VTONE = 1.4 V at Io(mod)(min), VLA =VLAQ =2V,
VTZERO = 1.4 V at IO(BIAS)(min), VO(BIAS) = 1 V, and parameter processes are at a minimum.
c) The maximum value for Ptot is the on-chip dissipation when VTONE = 3.4 V at Io(mod)(max), VLA =VLAQ =2V,
VTZERO = 3.4 V at IO(BIAS)(max), VO(BIAS) = 1 V, and parameter processes are at a maximum.
d) Ptot =ICC(tot) × VCC +IO(BIAS) × VO(BIAS) +ILA × VLA with Io(mod)(on) flowing through pin LA.
3. The minimum value of the capacitance on pin MONIN is required to prevent instability.
4. The reference currents can be set by connecting external resistors between VCC and pins ONE and ZERO
(see Section “Automatic laser control”). The corresponding MPD current range for optical 1 is from 96 to 1040
A.
The MPD current range for optical 0 is from 24 to 260
A.
5. See Section “Accuracy of voltage on inputs: ONE, ZERO, ALARMLO, ALARMHI”.
6. See Section “Automatic laser control”.
7. The specified transconductance is the ratio between the modulation current on pins LA or LAQ and the voltage on
pin TONE, under small signal conditions.
Alarm reference current inputs: pins ALARMHI and ALARMLO (TZA3031AHL)
Iref(ALARMLO)
reference current on
pin ALARMLO
note 14
6
100
A
Vref(ALARMLO)
reference voltage on
pin ALARMLO
referenced to VCC(R)
1.5
V
α
(ALARMLO)
attenuation ratio of
Iref(ALARMLO) to IO(BIAS)(min)
note 15
200
315
400
IO(BIAS)(min)(hys)
minimum bias current
detection hysteresis
7.5
10
15
%
Iref(ALARMHI)
reference current on
pin ALARMHI
note 14
6
65
A
Vref(ALARMHI)
reference voltage on
pin ALARMHI
referenced to VCC(R)
1.5
V
α
(ALARMHI)
attenuation ratio of
Iref(ALARMHI) to IO(BIAS)(max)
note 15
1300
1500
1700
IO(BIAS)(max)(hys) maximum bias current
detection hysteresis
7.5
10
15
%
Reference voltage output: pin BGAP
VO
output voltage
1.165
1.20
1.235
A
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
55.6 mA
0.0015
+
I
OBIAS
() mA
[] I
o mod
() on
() mA
[]
×
1
0.026
T
j ° C
[]
25
-----------------
×
–
×
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