Datasheet
LMP8601, LMP8601-Q1
www.ti.com
SNOSAR2E –SEPTEMBER 2008–REVISED MARCH 2013
3.3V Electrical Characteristics
(1)
Unless otherwise specified, all limits ensured at T
A
= 25°C, V
S
= 3.3V, GND = 0V, -4V ≤ V
CM
≤ 27V, and R
L
= ∞, Offset (Pin 7)
is grounded, 10nF between V
S
and GND. Boldface limits apply at the temperature extremes.
Parameter Test Conditions Min
(2)
Typ
(3)
Max
(2)
Unit
Overall Performance (From -IN (pin 1) and +IN (pin 8) to OUT (pin 5) with pins A1 (pin 3) and A2 (pin 4) connected)
I
S
Supply Current 0.6 1 1.3 mA
A
V
Total Gain 19.9 20 20.1 V/V
Gain Drift
(4)
-40°C ≤ T
A
≤ 125°C -2.7 ±20 ppm/°C
SR Slew Rate
(5)
V
IN
= ±0.165V 0.4 0.7 V/μs
BW Bandwidth 50 60 kHz
V
OS
Input Offset Voltage V
CM
= V
S
/ 2 0.15 ±1 mV
TCV
OS
Input Offset Voltage Drift
(6)
-40°C ≤ T
A
≤ 125°C 2 ±10 μV/°C
e
n
Input Referred Voltage Noise 0.1 Hz - 10 Hz, 6 Sigma 16.4 μV
P-P
Spectral Density, 1 kHz 830 nV/√Hz
PSRR Power Supply Rejection Ratio DC, 3.0V ≤ V
S
≤ 3.6V, V
CM
= V
S
/2 70 86 dB
Mid-scale Offset Scaling Accuracy ±0.15 ±0.5 %
Input Referred ±0.413 mV
Preamplifier (From input pins -IN (pin 1) and +IN (pin 8) to A1 (pin 3))
R
CM
Input Impedance Common Mode -4V ≤ V
CM
≤ 27V 250 295 350 kΩ
R
DM
Input Impedance Differential Mode -4V ≤ V
CM
≤ 27V 500 590 700 kΩ
V
OS
Input Offset Voltage V
CM
= V
S
/ 2 ±0.15 ±1 mV
DC CMRR DC Common Mode Rejection Ratio -2V ≤ V
CM
≤ 24V 86 96 dB
AC CMRR AC Common Mode Rejection Ratio
(7)
f = 1 kHz 80 94
dB
f = 10 kHz 85
CMVR Input Common Mode Voltage Range for 80 dB CMRR -4 27 V
A1
V
Gain
(4)
9.95 10.0 10.05 V/V
R
F-INT
Output Impedance Filter Resistor 99 100 101 kΩ
TCR
F-INT
Output Impedance Filter Resistor Drift ±5 ±50 ppm/°C
A1 V
OUT
A1 Output Voltage Swing V
OL
R
L
= ∞ 2 10 mV
V
OH
3.2 3.25 V
Output Buffer (From A2 (pin 4) to OUT( pin 5 ))
V
OS
Input Offset Voltage 0V ≤ V
CM
≤ V
S
-2 2
±0.5 mV
-2.5 2.5
A2
V
Gain
(4)
1.99 2 2.01 V/V
I
B
Input Bias Current of A2
(8)
, -40 fA
±20 nA
A2 V
OUT
A2 Output Voltage Swing
(9) (10)
V
OL
R
L
= 100 kΩ 4 20 mV
V
OH
3.28 3.29 V
(1) The electrical Characteristics tables list ensured specifications under the listed Recommended Operating Conditions except as otherwise
modified or specified by the Electrical Characteristics Conditions and/or Notes. Typical specifications are estimations only and are not
ensured.
(2) Datasheet min/max specification limits are ensured by test.
(3) Typical values represent the most likely parameter norms at T
A
= +25°C, and at the Recommended Operation Conditions at the time of
product characterization and are not ensured.
(4) Both the gain of the preamplifier A1
V
and the gain of the buffer amplifier A2
V
are measured individually. The over all gain of both
amplifiers A
V
is also measured to assure the gain of all parts is always within the A
V
limits
(5) Slew rate is the average of the rising and falling slew rates.
(6) Offset voltage drift determined by dividing the change in V
OS
at temperature extremes into the total temperature change.
(7) AC Common Mode Signal is a 5V
PP
sine-wave (0V to 5V) at the given frequency.
(8) Positive current corresponds to current flowing into the device
(9) For this test input is driven from A1 stage.
(10) For V
OL
, R
L
is connected to V
S
and for V
OH
, R
L
is connected to GND.
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