TC850 데이터 시트보기 (PDF) - Microchip Technology

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TC850

15-Bit, Fast Integrating CMOS A/D Converter

Microchip Technology 

1.0 ELECTRICAL SPECIFICATIONS

Absolute Maximum Ratings*

Positive Supply Voltage..........................................+6V

Negative Supply Voltage ....................................... - 9V

Analog Input Voltage (IN+ pr IN-) .............. VDD to VSS

Voltage Reference Input:

(REF1+, REF1–, REF2+).................. VDD to VSS

Logic Input Voltage.............VDD + 0.3V to GND – 0.3V

Current Into Any Pin...........................................10 mA

While Operating .....................................100 μA

Ambient Operating Temperature Range

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

I Device......................................-25°C to +85°C

Package Power Dissipation (TA ≤ 70°C)

CerDIP .....................................................2.29Ω

Plastic DIP................................................1.23Ω

Plastic PLCC ...........................................1.23Ω

TC850

*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.

TABLE 1-1: TC850 ELECTRICAL SPECIFICATIONS

Electrical Characteristics: VS = ±5V; FCLK = 61.44kHz, VFS = 3.2768V, TA = 25°C, Figure 1-1, unless otherwise specified.

Symbol

Parameter

Min

Typ

Max

Unit

Test Conditions

Zero Scale Error

End Point Linearity Error

Differential Nonlinearity

±0.25 ±0.5

LSB VIN = 0V

—

±1

±2

LSB -VFS ≤ VIN ≤ +VFS

—

±0.1

±0.5

LSB

IIN Input Leakage Current

VCMR

CMRR

Common Mode Voltage Range

Common Mode Rejection Ratio

Full Scale Gain Temperature

Coefficient

Zero Scale Error

Temperature Coefficient

Full Scale Magnitude

Symmetry Error

—

—

VSS + 1.5

—

—

—

—

30

75

pA VIN = 0V, TA = 25°C

1.1

3

nA -25° ≤ TA ≤ +85°C

— VSS – 1.5

V

Over Operating Temperature Range

80

—

dB VIN = 0V, VCM = ±1V

2

5

ppm/°C External Ref. Temperature

Coefficient = 0 ppm/°C

0°C ≤ TA ≤ +70°C

0.3

2

μV/°C VIN = 0V

0°C ≤ TA ≤ +70°C

0.5

2

LSB VIN = ±3.275V

eN Input Noise

—

30

—

μVP-P Not Exceeded 95% of Time

IS+ Positive Supply Current

—

2

3.5

mA

IS– Negative Supply Current

—

2

3.5

mA

VOH Output High Voltage

3.5

4.9

—

V IO = 500 μA

VOL Output Low Voltage

IOP Output Leakage Current

—

0.15

0.4

—

0.1

1

V IO = 1.6 mA

μA Pins 8 -15, High-impedance State

VIH Input High Voltage

3.5

2.3

—

V Note 3

VIL Input Low Voltage

IPU Input Pull-Up Current

—

2.1

1

—

4

—

V Note 3

μA Pins 2, 3, 4, 6, 7; VIN = 0V

IPD Input Pull-Down Current

—

14

—

μA Pins 1, 5; VIN = 5V

IOSC Oscillator Output Current

—

140

—

μA Pin 18, VOUT = 2.5V

Note 1: Demand mode, CONT/DEMAND = LOW. Figure 8-2 timing diagram. CL = 100 pF.

2: Continuous mode, CONT/DEMAND = HIGH. Figure 8-4 timing diagram.

3: Digital inputs have CMOS logic levels and internal pull-up/pull-down resistors. For TTL compatibility, external pull-up

resistors to VDD are recommended.

© 2006 Microchip Technology Inc.

DS21479C-page 3

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