TC9400_06 Datasheet, PDF (4/24 Pages) Microchip Technology – Voltage-to-Frequency/Frequency-to-Voltage Converters

TC9400/9401/9402
TABLE 1-1: TC940X ELECTRICAL SPECIFICATIONS (CONTINUED)
Electrical Characteristics: V_DD = +5V, V_SS = -5V, V_GND = 0V, V_REF = -5V, R_BIAS = 100 kΩ, Full Scale = 10 kHz, unless otherwise
specified. T_A = +25°C, unless temperature range is specified (-40°C to +85°C for E device, 0°C to +70°C for C device).
Parameter
Min Typ Max Min Typ Max Min Typ Max Units
Test Conditions
Analog Input
I_IN Full Scale
—
10
——
10
——
10
—
I_IN Over Range
Response Time
—
—
50 —
—
50 —
—
50
—
2
——
2
——
2
—
Digital Section
TC9400
V_SAT @ I_OL = 10mA —
0.2 0.4
V_OUTMAX – V_OUT
—
—
18
Common (Note 4)
TC9401
—
0.2 0.4
—
—
18
TC9402
—
0.2
0.4
—
—
18
Pulse Frequency
—
3
——
3
——
3
—
Output Width
Frequency-to-Voltage
μA
μA
Cycle
Full Scale Analog Input
Current to achieve
Specified Accuracy
Over Range Current
Settling Time to 0.1%
Full Scale
V
V
μsec
Logic “0” Output
Voltage (Note 3)
Voltage Range
Between Output and
Common
Supply Current
I_DD Quiescent
(Note 5)
I_SS Quiescent
(Note 5)
V_DD Supply
V_SS Supply
— 1.5
6—
1.5
6—
— -1.5 -6 — -1.5 -6 —
4
— 7.5 4
— 7.5 4
-4
— -7.5 -4
— -7.5 -4
3
10
-3
-10
—
7.5
—
-7.5
mA Current Required from
Positive Supply during
Operation
mA Current Required from
Negative Supply during
Operation
V
Operating Range of
Positive Supply
V
Operating Range of
Negative Supply
Reference Voltage
V_REF – V_SS
-2.5 —
— -2.5 —
— -2.5 —
—
V
Range of Voltage
Reference Input
Accuracy
Non-Linearity
(Note 10)
Input Frequency
Range
(Notes 7 and 8)
— 0.02 0.05 — 0.01 0.02 — 0.05 0.25
% Deviation from ideal
Full Scale Transfer Function as a
Percentage Full Scale
Voltage
10
— 100k 10
— 100k 10
— 100k
Hz Frequency Range for
Specified Non-Linearity
Frequency Input
Note
1: Full temperature range; not tested.
2: I_IN = 0.
3: Full temperature range, I_OUT = 10 mA.
4: I_OUT = 10 μA.
5: Threshold Detect = 5V, Amp Out = 0V, full temperature range.
6: 10 Hz to 100 kHz; not tested.
7: 5μsec minimum positive pulse width and 0.5μsec minimum negative pulse width.
8: t_R = t_F = 20nsec.
9: R_L ≥ 2 kΩ, tested @ 10 kΩ.
10: Full temperature range, V_IN = -0.1V.
DS21483C-page 4
© 2006 Microchip Technology Inc.