adl5304 Analog Devices, Inc., adl5304 Datasheet - Page 4

• Manufacturer Part Number: adl5304
• Description: High Speed, 200 Db Range, Logarithmic Converter
• Manufacturer: Analog Devices, Inc.

ADL5304
Parameter
POWER SUPPLY
1
2
3
4
5
6
Slope is of the same magnitude but opposite sign for input applied to IDEN.
I
Output noise and small signal bandwidth are functions of input current; measured from the INUM input to the VLOG output. See the
Characteristics
High-to-low currents (falling edge) represent the worst-case settling condition. Low-to-high currents (rising edge) settling times are ~2× faster than the falling edge
settling. Settling time is measured to 1 dB error (10 mV/dB; V
IREF applied to IDEN together with 1P5V determines the logarithmic intercept current, I
Using dual-supply operation with the VSMx, DCBI, and INPS pins at ground, VNEG needs to be in the −2 V to −5 V range for proper device function.
Z
VPOS
VNEG
= I
REF
Quiescent Current
Quiescent Current
/10
6
(V OFS /V Y )
section.
. Note that the error of I
Z
is dependent on three parameters, I
Test Conditions/Comments
VPOS, VNEG
INUM = IDEN = 10 μA; VPOS = 5 V, VNEG = 0 V
4.5 V ≤ VPOS ≤ 5.5 V
Nominal 0 V for single supply
INUM = IDEN = 10 μA; VPOS = 5 V, VNEG = 0 V
VNEG = −5 V
LOG
settles to within 10 mV of the final value).
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REF
, V
OFS
, and V
Z
, and thereby the accuracy of the intercept.
Y
. All three of those are trimmed.
Min
4.5
10
0
−8.5
−10.5
Typ
5.0
13.5
−7.3
Typical Performance
Max
5.5
16
17
−5
−6
Data Sheet
Unit
V
mA
mA
V
mA
mA