TDF8704TSLASH4 datasheet(6/20 Pages) PHILIPS

6 / 20 page

June 1994

Philips Semiconductors

Product speciﬁcation

8-bit high-speed analog-to-digital converter

TDF8704

CHARACTERISTICS (see Tables 1 and 2)

VCCA = V7 to V6 = 4.75 to 5.25 V; VCCD = V18 to V17 = 4.75 to 5.25 V; VCCO = V19 and V21 to V20 = 4.75 to 5.25 V; AGND

and DGND shorted together; VCCA to VCCD = −0.25 to +0.25 V; VCCO to VCCD = −0.25 to +0.25 V;

VCCA to VCCD = −0.25 to +0.25 V; Tamb = −40 to +85 °C; typical readings taken at VCCA =VCCD = 5 V and Tamb =25 °C;

unless otherwise speciﬁed.

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Supply

VCCA

analog supply voltage

4.75

5.0

5.25

VCCD

digital supply voltage

4.75

5.0

5.25

VCCO

output stages supply voltage

4.75

5.0

5.25

ICCA

analog supply current

−

ICCD

digital supply current

−

ICCO

output stages supply current

all outputs LOW

−

Inputs

CLOCK INPUT CLK (REFERENCED TO DGND)

VIL

LOW level input voltage

−

0.8

VIH

HIGH level input voltage

2.0

−

VCCD

IIL

LOW level input current

Vclk = 0.4 V

−400

−−µA

IIH

HIGH level input current

Vclk = 2.7 V

−−

100

µA

Vclk =VCCD

−−

300

µA

input impedance

fclk = 50 MHz

−

Ω

input capacitance

fclk = 50 MHz

−

4.5

−

VI (ANALOG INPUT VOLTAGE REFERENCED TO AGDN; SEE FIGS 3 AND 4 AND TABLE 1)

VI(B)

input voltage (BOTTOM)

1.21

1.25

1.29

VI(0)

input voltage

output code = 0

1.42

1.48

1.51

Vos(B)

offset voltage (BOTTOM)

VI(0) to VI(B)

210

225

240

VI(T)

input voltage (TOP)

3.37

3.46

3.58

VI(255)

input voltage

output code = 255

3.14

3.22

3.30

Vos(T)

offset voltage (TOP)

VI(T) to VI(255)

225

240

255

VI(p-p)

input voltage amplitude

(peak-to-peak value)

1.69

1.74

1.79

load current on VRT and VRB

−300

−

+300

µA

IIL

LOW level input current

VI = 1.25 V

−

−µA

IIH

HIGH level input current

VI = 3.46 V

150

400

µA

input impedance

fi = 4.43 MHz

−

Ω

input capacitance

fi = 4.43 MHz

−

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