LTC1099_15 datasheet(3/16 Pages) LINER

Part #	LTC1099

Description	High Speed 8-Bit A/D Converter with Built-In Sample-and-Hold

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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LTC1099

3

DIGITAL AND DC ELECTRICAL CHARACTERISTICS

LTC1099AI/LTC1099I

LTC1099AC/LTC1099C

SYMBOL PARAMETER

CONDITIONS

MIN

TYP

MAX

MIN

TYP

MAX

UNITS

VIH

High Level Input Voltage

All Digital Inputs, VCC = 5.25V

q

2.0

V

VIL

Low Level Input Voltage

All Digital Inputs, VCC = 4.75V

q

0.8

0.0001

0.8

V

IIH

High Level Input Current

VIH = 5V; CS, RD, Mode

q

0.0001

1

µA

VIH = 5V; WR

q

0.0005

3

0.0005

3

µA

IIL

Low Level Input Current

VIL = 0V; All Digital Inputs

q

–0.0001

–1

–0.0001

–1

µA

VOH

High Level Output Voltage DB0-DB7, OFL, INT; VCC = 4.75V

IOUT = 360µA

q

2.4

4.0

2.4

4.0

V

IOUT =10µA

4.7

V

VOL

Low Level Output Voltage DB0-DB7, OFL, INT, RDY; VCC = 4.75V

IOUT =1.6mA

q

0.4

V

IOZ

Hi-Z Output Leakage

DB0-DB7, RDY; VOUT = 5V

q

0.1

3

0.1

3

µA

DB0-DB7, RDY; VOUT = 0V

q

–0.1

–3

–0.1

–3

µA

ISOURCE

Output Source Current

DB0-DB7, OFL, INT; VOUT = 0V

q

–11

–6

–11

–7

mA

ISINK

Output Sink Current

DB0-DB7, OFL, INT, RDY; VOUT = 5V

q

14

7

14

9

mA

ICC

Supply Current

CS = WR = RD = VCC

q

11

20

11

15

mA

The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C.

VCC = 5V, REF+ = 5V, REF– = 0V and TA = TMIN to TMAX unless otherwise noted.

The q denotes the specifications which apply over the full operating temperature range,

otherwise specifications are at TA = 25°C. VCC = 5V, REF+ = 5V, REF– = 0V and TA = TMIN to TMAX unless otherwise noted.

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: All voltages are with respect to GND (Pin 10) unless otherwise

noted.

AC CHARACTERISTICS

Note 3: Total unadjusted error includes offset, gain, linearity and hold step

errors.

Note 4: Reference input voltage range is guaranteed but is not tested.

LTC1099AI/LTC1099I

LTC1099AC/LTC1099C

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

MIN

TYP

MAX

UNITS

RD Mode (Figure 2) Pin 7 = GND

tCRD

Conversion Time

TA = 25°C

2.2

2.5

2.8

2.2

2.5

2.8

µs

q

5.0

3.75

µs

tRDY

Delay From CS

↓ to RDY↓

CL = 100pF

70

ns

tACC0

Delay From RD

↓to Output Data Valid

CL = 100pF

tCRD + 35

ns

tINTH

Delay From RD

↑to INT↑

CL = 100pF

70

ns

t1H, t0H

Delay From RD

↑ to Hi-Z State on Outputs

Test Circuit Figure 1

70

ns

tP

Delay Time Between Conversions

700

ns

tACC2

Delay Time From RD

↓to Output Data Valid

70

ns

WR/RD Mode (Figures 3 and 4) Pin 7 = VCC

tCWR

Conversion Time

TA = 25°C

2.2

2.5

2.8

2.2

2.5

2.8

µs

q

5.0

3.75

µs

tACC0

Delay Time From WR

↓to Output Data Valid CL = 100pF

tCWR + 40

ns

tACC2

Delay From RD

↓to Output Data Valid

CL = 100pF

70

ns

tINTH

Delay From RD

↑to INT↑

CL = 100pF

70

ns

tIHWR

Delay From WR

↓ to INT↑

CL = 100pF

240

ns

t1H, t0H

Delay From RD

↑ to Hi-Z State on Outputs

Test Circuit Figure 1

70

ns

tP

Delay Time Between Conversions

700

ns

tWR

Minimum WR Pulse Width

55

ns

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