TDA8783M 查看數據表（PDF） - Philips Electronics

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TDA8783M

True logarithmic amplifier

Philips Electronics 

Philips Semiconductors

True logarithmic amplifier

Product specification

TDA8780M

SYMBOL

PARAMETER

CONDITIONS

MIN. TYP. MAX. UNIT

Output (pin 13)

Vos

DC offset voltage (Vout to Vref)

no input signal

−60 +40 +140 mV

Vout

output voltage level across

logarithmic range

Vin = 60 µV (−71.4 dBm)

Vin = 400 µV (−54.9 dBm)

45

80

115

mV

200 245 290

mV

Vin = 3 mV (−37.4 dBm)

365 440 495

mV

Vin = 25 mV (−19.0 dBm)

530 610 690

mV

Vin = 200 mV (−1.0 dBm)

680 780 880

mV

Vin = 300 mV (+2.6 dBm)

710 820 930

mV

Rg = 0; Vin = 3 mV; see Fig.3 −

530 −

mV

Rg = ∞; Vin = 3 mV; see Fig.3 −

360 −

mV

Vout(lim) limiting output voltage

Vin = 1 V (+13.0 dBm)

750 950 1050 mV

∆ϕ

spread in output phase transfer

−

15

−

characteristic across logarithmic

range

flf

low frequency cut-off point (3 dB) see Fig.6

Gflat

gain flatness at 1 to 15 MHz

Vin = 10 mV

R13

output resistance

−

−

0.1

MHz

−

0.5

1.5

dB

−

150 −

Ω

Logic input (pin 16)

VIL

LOW level input voltage

VIH

HIGH level input voltage

ILI

input leakage current

VIL = 0 to VP

0

−

2

−

−1

−

0.8

V

VP

V

+1

µA

Note

1. With some changes in application the lower input frequency limit can be lowered.

1995 Jul 25

7

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