SPECIFICATIONS
At T
A
= +25°C and V
CC
=
±15V,
unless otherwise noted.
VFC32KP, KU
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
INPUT (V/F CONVERTER)
F
OUT
= V
IN
/7.5 R
1
C
1
Voltage Range
(1)
Positive Input
Negative Input
Current Range
(1)
Bias Current
Inverting Input
Noninverting Input
Offset Voltage
(2)
Differential Impedance
Common-mode
Impedance
INPUT (F/V CONVERTER)
V
OUT
= 7.5 R
1
C
1
F
IN
Impedance
Logic “1”
Logic “0”
Pulse-width Range
ACCURACY
Linearity Error
(3)
0.01Hz
≤
Oper
Freq
≤
10kHz
0.1Hz
≤
Oper
Freq
≤
100kHz
0.5Hz
≤
Oper
Freq
≤
500kHz
VFC32BM
TYP
MAX
MIN
VFC32SM
TYP
MAX
UNITS
>0
>0
>0
20
100
1
650 || 10
500 || 3
150 || 10
+1.0
–0.05
+0.25mA
x R
1
–10
+0.25
100
250
4
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
mA
nA
nA
mV
kΩ || pF
MΩ || pF
kΩ || pF
V
V
µs
300 || 10
300 || 3
50 || 10
V
V
V
V
V
V
V
V
V
V
V
V
0.1
150k/F
MAX
V
V
V
V
V
V
±0.005
±0.025
±0.05
1
±3
5
±75
±75
±0.010
(4)
±0.05
V
V
V
V
V
V
V
V
V
V
% of FSR
(5)
% of FSR
% of FSR
Offset Error Input
Offset Votlage
(2)
Offset Drift
(6)
Gain Error
(2)
Gain Drift
(6)
Full Scale Drift
(offset drift and
gain drift)
(6, 7)
Power Supply
Sensitivity
4
f = 10kHz
f = 10kHz
V
V
V
±50
±50
V
±100
±100
V
V
V
±70
±70
V
±150
±150
mV
ppm of FSR/°C
% of FSR
ppm/°C
ppm of FSR/°C
f = DC,
±V
CC
= 12VDC
to 18VDC
±0.015
V
V
V
V
V
% of FSR/%
OUTPUT (V/F CONVERTER) (open collector output)
Voltage, Logic “0”
Leakage Current,
Logic “1”
Voltage, Logic “1”
Pulse Width
Fall Time
I
SINK
= 8mA
V
O
= 15V
External Pull-up Resistor
Required (see Figure 4)
For Best Linearity
I
OUT
= 5mA, C
LOAD
= 500pF
I
O
≤
7mA
V
O
≤
7VDC
Closed Loop
Without Oscillation
0 to +10
+10
1
100
500
(8)
6
(V/F) to Specified Linearity
for a Full Scale Input Step
< 50% Overload
(9)
(9)
0
0.2
0.01
0.4
1.0
V
PU
V
V
V
V
V
V
V
V
V
V
µA
V
s
ns
0.25/F
MAX
400
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
OUTPUT (F/V CONVERTER)
V
OUT
Voltage
Current
Impedance
Capacitive Load
DYNAMIC RESPONSE
Full Scale Frequency
Dynamic Range
Settling Time
Overload Recovery
POWER SUPPLY
Rated Voltage
Voltage Range
Quiescent Current
TEMPERATURE RANGE
Specification
Operating
Storage
V
mA
Ω
pF
kHz
decades
V
V
V
V
mA
+125
+125
+150
°C
°C
°C
V
V
±11
±15
±5.5
±20
±6.0
+70
+85
+85
–25
–55
–65
V
V
+85
+125
+150
–55
–55
–65
V
V
0
–25
–25
V
Specification the same as VFC32KP.
NOTES: (1) A 25% duty cycle (0.25mA input current) is recommended for best linearity. (2) Adjustable to zero. See Offset and Gain Adjustment section. (3) Linearity error is specified
at any operating frequency from the straight line intersecting 90% of full scale frequency and 0.1% of full scale frequency. See Discussion of Specifications section. Above 200kHz,
it is recommended all grades be operated below +85°C. (4)
±0.015%
of FSR for negative inputs shown in Figure 5. Positive inputs are shown in Figure 1. (5) FSR = Full Scale Range
(corresponds to full scale frequency and full scale input voltage). (6) Exclusive of external components’ drift. (7) Positive drift is defined to be increasing frequency with increasing
temperature. (8) For operations above 200kHz up to 500kHz, see Discussion of Specifications and Installation and Operation sections. (9) One pulse of new frequency plus 1µs.
VFC32
2
BURR-BROWN [ BURR-BROWN CORPORATION ]
