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DRV401 Datasheet(Hoja de datos) 3 Page - Burr-Brown (TI)

[Old version datasheet] Texas Instruments acquired Burr-Brown Corporation. Click here to check the latest version.
No. de Pieza. DRV401
Descripción  Sensor Signal Conditioning IC for Closed-Loop Magnetic Current Sensor
Descarga  28 Pages
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Fabricante  BURR-BROWN [Burr-Brown (TI)]
Página de inicio  http://www.burr-brown.com
Logo 

 
 3 page
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DRV401
SBVS070A − JUNE 2006 − REVISED OCTOBER 2006
www.ti.com
3
ELECTRICAL CHARACTERISTICS
Boldface limits apply over the specified temperature range: TJ = −40°C to +125°C.
At TA = +25°C and VDD1 = VDD2 = +5V with external 100kHz filter BW, and zero output current ICOMP, unless otherwise noted.
DRV401
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
DIFFERENTIAL AMPLIFIER
RL = 10kΩ to 2.5V, VREFIN = 2.5V
OFFSET VOLTAGE
Offset Voltage, RTO(1)(2)
VOS
Gain 4V/V
±0.01
±0.1
mV
Drift, RTO(2)
dVOS/dT
±0.1
±1(3)
µV/°C
vs Common-Mode, RTO
CMRR
−1V to +6V, VREF = 2.5V
±50
±250
µV/V
vs Power-Supply, RTO
PSRR
VREF not included
±4
±50
µV/V
SIGNAL INPUT
Common-Mode Voltage Range
−1
(VDD) + 1
V
SIGNAL OUTPUT
Signal Over-Range Indication (OVER-RANGE), Delay(2)
VIN = 1V Step, See Notes 2 and 3
2.5 to 3.5
µs
Voltage Output Swing From Negative Rail(2),
OVER-RANGE Trip Level
I = +2.5mA, CMP Trip Level
+48
+85
mV
Voltage Output Swing From Positive Rail(2),
OVER-RANGE Trip Level
I = −2.5mA, CMP Trip Level
VDD − 85
VDD − 48
mV
Short-Circuit Current(2)
ISC
VOUT Connected To GND
−18
mA
VOUT Connected To VDD
+20
mA
Gain, VOUT/VIN_DIFF
4
V/V
Gain Error
±0.02
±0.3
%
Gain Error Drift
±0.1
ppm/
°C
Linearity Error
RL = 1kΩ
10
ppm
FREQUENCY RESPONSE
Bandwidth(2)
BW−3dB
2
MHz
Slew Rate(2)
SR
CMVR = −1V to = +4V
6.5
V/
µs
Settling Time, Large-Signal(2)
dV
± 2V to 1%, No External Filter
0.9
µs
Settling Time(2)
dV
± 0.4V to 0.01%
14
µs
INPUT RESISTANCE
Differential
16.5
20
23.5
k
Common-Mode
41
50
59
k
External Reference Input
41
50
59
k
NOISE
Output Voltage Noise Density, f = 1kHz, RTO(2)
en
Compensation Loop Disabled
170
nV/
√Hz
COMPENSATION LOOP
DC STABILITY
Probe f = 250kHz, RLOAD = 20Ω
Offset Error(4)
Deviation from 50% PWM, Pin Gain = L
0.03
%
Offset Error Drift(2)
Deviation from 50% PWM, Pin Gain = L
7.5
ppm/
°C
Gain, Pin Gain = L(2)
|VICOMP1| − |VICOMP2|
−200
25
200
ppm/V
Power-Supply Rejection Ratio
PSRR
Probe Loop f = 250kHz
500
ppm/V
FREQUENCY RESPONSE
Open-Loop Gain, Two Modes, 7.8kHz
Pin Gain H/L
24/32
dB
PROBE COIL LOOP
Input Voltage Clamp Range
Field Probe Current < 50mA
−0.7 to VDD + 0.7
V
Internal Resistor, IS1 or IS2 to VDD1(2)
RHIGH
47
59
71
Internal Resistor, IS1 or IS2 to GND1(2)
RLOW
60
75
90
Resistance Mismatch Between IS1 and IS2(2)
ppm of RHIGH + RLOW
300
1500
ppm
Total Input Resistance(3)
134
200
W
Comparator Threshold Current(3)
22
28
34
mA
Minimum Probe Loop Half-Cycle(2)
250
280
310
ns
Probe Loop Minimum Frequency
250
kHz
No Oscillation Detect (Error) Suppression
35
µs
COMPENSATION COIL DRIVER, H-BRIDGE
Peak Current(2)
VICOMP1 − VICOMP2 = 4.0VPP
250
mA
Voltage Swing
20
Ω Load
4.2
VPP
Output Common-Mode Voltage
VDD2/2
V
Wire Break Detect, Threshold Current(5)
ICOMP1 and ICOMP2 Railed
33
57
mA




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