ADC0804 datasheet(4/41 Pages) NSC

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AC Electrical Characteristics (Continued)

The following specifications apply for V

CC=5VDC and TMIN≤TA≤TMAX unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ

Max

Units

C

OUT

TRI-STATE Output

5

7.5

pF

Capacitance (Data Buffers)

CONTROL INPUTS [Note: CLK IN (Pin 4) is the input of a Schmitt trigger circuit and is therefore specified separately]

V

IN (1)

Logical “1” Input Voltage

V

CC=5.25 VDC

2.0

15

V

DC

(Except Pin 4 CLK IN)

V

IN (0)

Logical “0” Input Voltage

V

CC=4.75 VDC

0.8

V

DC

(Except Pin 4 CLK IN)

I

IN (1)

Logical “1” Input Current

V

IN=5VDC

0.005

1

µA

DC

(All Inputs)

I

IN (0)

Logical “0” Input Current

V

IN=0VDC

−1

−0.005

µA

DC

(All Inputs)

CLOCK IN AND CLOCK R

V

T+

CLK IN (Pin 4) Positive Going

2.7

3.1

3.5

V

DC

Threshold Voltage

V

T−

CLK IN (Pin 4) Negative

1.5

1.8

2.1

V

DC

Going Threshold Voltage

V

H

CLK IN (Pin 4) Hysteresis

0.6

1.3

2.0

V

DC

(V

T+)−(VT−)

V

OUT (0)

Logical “0” CLK R Output

I

O=360 µA

0.4

V

DC

Voltage

V

CC=4.75 VDC

V

OUT (1)

Logical “1” CLK R Output

I

O=−360 µA

2.4

V

DC

Voltage

V

CC=4.75 VDC

DATA OUTPUTS AND INTR

V

OUT (0)

Logical “0” Output Voltage

Data Outputs

I

OUT=1.6 mA, VCC=4.75 VDC

0.4

V

DC

INTR Output

I

OUT=1.0 mA, VCC=4.75 VDC

0.4

V

DC

V

OUT (1)

Logical “1” Output Voltage

I

O=−360 µA, VCC=4.75 VDC

2.4

V

DC

V

OUT (1)

Logical “1” Output Voltage

I

O=−10 µA, VCC=4.75 VDC

4.5

V

DC

I

OUT

TRI-STATE Disabled Output

V

OUT=0VDC

−3

µA

DC

Leakage (All Data Buffers)

V

OUT=5VDC

3µA

DC

I

SOURCE

V

OUT Short to Gnd, TA=25˚C

4.5

6

mA

DC

I

SINK

V

OUT Short to VCC,TA=25˚C

9.0

16

mA

DC

POWER SUPPLY

I

CC

Supply Current (Includes

f

CLK=640 kHz,

Ladder Current)

V

REF/2=NC, TA=25˚C

and CS =5V

ADC0801/02/03/04LCJ/05

1.1

1.8

mA

ADC0804LCN/LCWM

1.9

2.5

mA

Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specifications do not apply when operating

the device beyond its specified operating conditions.

Note 2: All voltages are measured with respect to Gnd, unless otherwise specified. The separate A Gnd point should always be wired to the D Gnd.

Note 3: A zener diode exists, internally, from VCC to Gnd and has a typical breakdown voltage of 7 VDC.

Note 4: For VIN(−)≥ VIN(+) the digital output code will be 0000 0000. Two on-chip diodes are tied to each analog input (see block diagram) which will forward conduct

for analog input voltages one diode drop below ground or one diode drop greater than the VCC supply. Be careful, during testing at low VCC levels (4.5V), as high

level analog inputs (5V) can cause this input diode to conduct–especially at elevated temperatures, and cause errors for analog inputs near full-scale. The spec allows

50 mV forward bias of either diode. This means that as long as the analog VIN does not exceed the supply voltage by more than 50 mV, the output code will be correct.

To achieve an absolute 0 VDC to5VDC input voltage range will therefore require a minimum supply voltage of 4.950 VDC over temperature variations, initial tolerance

and loading.

Note 5: Accuracy is guaranteed at fCLK = 640 kHz. At higher clock frequencies accuracy can degrade. For lower clock frequencies, the duty cycle limits can be ex-

tended so long as the minimum clock high time interval or minimum clock low time interval is no less than 275 ns.

Note 6: With an asynchronous start pulse, up to 8 clock periods may be required before the internal clock phases are proper to start the conversion process. The

start request is internally latched, see

Figure 4 and section 2.0.

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Số phần tương tự - ADC0804

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Intersil Corporation	ADC0804	250Kb / 16P	8-Bit, Microprocessor- Compatible, A/D Converters August 1997
NXP Semiconductors	ADC0804	154Kb / 18P	CMOS 8-bit A/D converters 2002 Oct 17
National Semiconductor ...	ADC0804	2Mb / 3P	8 BIT UP COMPATIBLE A/D CONVERTERS
National Semiconductor ...	ADC0804	1Mb / 41P	8-Bit 關P Compatible A/D Converters
Intersil Corporation	ADC0804	4Mb / 122P	P-CHANNEL JFET

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Mô tả tương tự - ADC0804

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
National Semiconductor ...	ADC080X	2Mb / 3P	8 BIT UP COMPATIBLE A/D CONVERTERS
	ADC0808	264Kb / 14P	8-Bit uP Compatible A/D Converters with 8-Channel Multiplexer
	ADC0808	394Kb / 16P	8-Bit uP Compatible A/D Converters with 8-Channel Multiplexer
	ADC0808	348Kb / 14P	8-Bit uP Compatible A/D Converters with 8-Channel Multiplexer
	ADC0844	467Kb / 20P	8-Bit uP Compatible A/D Converters with Multiplexer Options
	ADC1025	411Kb / 11P	10-BIT uP COMPATIBLE A/D CONVERTERS
Intersil Corporation	ADC0802	250Kb / 16P	8-Bit, Microprocessor- Compatible, A/D Converters August 1997
Intersil Corporation	ADC0803	580Kb / 17P	8-Bit, Microprocessor-Compatible, A/D Converters August 2002
Renesas Technology Corp	ADC0803	875Kb / 17P	8-Bit, Microprocessor-Compatible, A/D Converters
Texas Instruments	ADC0804LCWMX	3Mb / 48P	[Old version datasheet] 8-Bit muP Compatible A/D Converters

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