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Fabricante

TC9400

Voltage-to-Frequency/Frequency-to-Voltage Converters

Microchip Technology 

TC9400/9401/9402

1.0 ELECTRICAL

CHARACTERISTICS

Absolute Maximum Ratings*

VDD – VSS ........................................................... +18V

IIN ........................................................................ 10mA

VOUTMAX – VOUT Common...................................... 23V

VREF – VSS ..........................................................-1.5V

Storage Temperature Range .............. -65°C to +150°C

Operating Temperature Range:

C Device ........................................... 0°C to +70°C

E Device......................................... -40°C to +85°C

Package Dissipation (TA ≤ 70°C):

8-Pin CerDIP .............................................. 800mW

8-Pin Plastic DIP ........................................ 730mW

8-Pin SOIC ................................................. 470mW

*Stresses above those listed under "Absolute Maximum

Ratings" may cause permanent damage to the device. These

are stress ratings only and functional operation of the device

at these or any other conditions above those indicated in the

operation sections of the specifications is not implied.

Exposure to Absolute Maximum Rating conditions for

extended periods may affect device reliability.

TC940X ELECTRICAL SPECIFICATIONS

Electrical Characteristics: VDD = +5V, VSS = -5V, VGND = 0V, VREF = -5V, RBIAS = 100kΩ, Full Scale = 10kHz, unless otherwise

specified. TA = +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

Voltage-to-Frequency

Accuracy

TC9400

TC9401

TC9402

Linearity 10kHz

— 0.01 0.05 — 0.004 0.01 — 0.05 0.25

Linearity 100kHz

— 0.1 0.25 — 0.04 0.08 — 0.25 0.5

Gain Temperature

Drift (Note 1)

Gain Variance

— ±25 ±40 —

— ±10 — —

±25 ±40 —

±10 — —

±50 ±100

±10

—

Zero Offset

(Note 2)

— ±10 ±50 — ±10 ±50 — ±20 ±100

Zero Temperature

Drift (Note 1)

— ±25 ±50 —

±25 ±50 —

±50 ±100

Note

1: Full temperature range; not tested.

2: IIN = 0.

3: Full temperature range, IOUT = 10mA.

4: IOUT = 10µA.

5: Threshold Detect = 5V, Amp Out = 0V, full temperature range.

6: 10Hz to 100kHz; not tested.

7: 5µsec minimum positive pulse width and 0.5µsec minimum negative pulse width.

8: tR = tF = 20nsec.

9: RL ≥ 2kΩ, tested @ 10kΩ.

10: Full temperature range, VIN = -0.1V.

% Output Deviation from

Full Scale Straight Line Between

Normalized Zero and

Full Scale Input

%

Output Deviation from

Full Scale Straight Line Between

Normalized Zero Read-

ing and Full Scale Input

ppm/°C Variation in Gain A due

Full Scale to Temperature Change

% of Variation from Ideal

Nominal Accuracy

mV Correction at Zero

Adjust for Zero Output

when Input is Zero

µV/°C

Variation in Zero Offset

Due to Temperature

Change

© 2002 Microchip Technology Inc.

DS21483B-page 3

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