TL441-EP_14 Datasheet, PDF (3/19 Pages) Texas Instruments – LOGARITHMIC AMPLIFIER

TL441ĆEP
LOGARITHMIC AMPLIFIER
SGLS268 − OCTOBER 2004
ABSOLUTE MAXIMUM RATINGS OVER OPERATING FREE-AIR TEMPERATURE RANGE (unless
otherwise noted)^†
TL441−EP
VCC+
VCC−
Supply voltages (see Note 1)
Input voltage (see Note 1)
8V
−8 V
6V
Output sink current (any one output)
30 mA
θ_JA
Package thermal impedance (see Notes 2 and 3)
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
83°C/W
260°C
Tstg
Storage temperature range (see Note 4)
−65°C to 150°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 under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. All voltages, except differential out voltages, are with respect to network ground terminal.
2. Maximum power dissipation is a function of TJ(max), θ_JA, and TA. The maximum allowable power dissipation at any allowable
ambient temperature is PD = (TJ(max) − TA)/θ_JA. Operating at the absolute maximum TJ of 150°C can affect reliability.
3. The package thermal impedance is calculated in accordance with JESD 51-7.
4. Long-term high-temperature storage and/or extended use at maximum recommended operating conditions may result in a reduction
of overall device life. See http://www.ti.com/ep_quality for additional information on enhanced plastic packaging.
RECOMMENDED OPERATING CONDITIONS
Peak-to-peak input voltage for each 30-dB stage
Operating free-air temperature, TA
ELECTRICAL CHARACTERISTICS, V_CC± = ±6 V, T_A = 255C
PARAMETER
Differential output offset voltage
Quiescent output voltage
DC scale factor (differential output), each 3-dB stage, −35 dBV to −5 dBV
AC scale factor (differential output)
DC error at −20 dBV (midpoint of −35 dBV to −5 dBV range)
Input impedance
Output impedance
Rise time, 10% to 90% points, CL = 24 pF
Supply current from VCC+
Supply current from VCC−
Power dissipation
TEST
FIGURE
1
2
3
3
4
2
2
2
MIN
0.01
− 55
MAX
1
125
UNIT
V
°C
MIN TYP MAX UNIT
±25 ±70 mV
5.45 5.6 5.85 V
7
8
11 mV/dB
8
mV/dB
1 2.6 dB
500
Ω
200
Ω
20
35 ns
14.5 18.5
23 mA
−6 −8.5 −10.5 mA
123 162 201 mW
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