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SPECIFICATIONS

DAC7634

SBAS134B – JULY 2004 – REVISED DECEMBER 2005

At T

A = TMIN to TMAX, VDD = VCC = 5 V, VSS = 0 V, VREFH = 2.5 V, and VREFL = 0 V, unless otherwise noted

DAC7634E

DAC7634EB

PARAMETER

TEST CONDITIONS

UNIT

MIN

TYP

MAX

MIN

TYP

MAX

ACCURACY

Linearity error(1)

±3

±4

±2

±3

LSB

Linearity match

±4

±2

LSB

Differential linearity error

±2

±3

±1

±2

LSB

Monotonicity, TMIN to TMAX

14

15

Bits

Zero-scale error

±1

±2

±1

±2

mV

Zero-scale error drift

5

10

5

10

ppm/°C

Full-scale error

±1

±2

±1

±2

mV

Full-scale error drift

5

10

5

10

ppm/°C

Zero-scale matching

Channel-to-channel matching

±1

±2

±1

±2

mV

Full-scale matching

Channel-to-channel matching

±1

±2

±1

±2

mV

Power supply rejection ratio (PSRR)

At full scale

10

100

10

100

ppm/V

ANALOG INPUT

Voltage output

0

VREFH

0

VREFH

V

VREFL = 0 V, VSS = 0 V,

RL = 10 kΩ

Output current

– 1.25

1.25

–1.25

1.25

mA

Maximum load capacitance

No oscillation

500

500

pF

Short-circuit current

±30

±30

mA

Short-circuit duration

GND or VCC

Indefinite

Indefinite

REFERENCE INPUT

VREFL

VREFL

Ref high input voltage range

2.5

2.5

V

+1.25

+1.25

VREFH

VREFH

Ref low input voltage range

0

0

V

–1.25

–1.25

Ref high input current

250

250

µA

Ref low input current

–250

–250

µA

DYNAMIC PERFORMANCE

Settling time

To ±0.003%, 2.5-V output step

8

10

8

10

µs

Channel-to-channel crosstalk

See Figure 6

0.5

0.5

LSB

Digital feedthrough

2

2

nV-s

Output noise voltage

f = 10 kHz

60

60

nV/

√Hz

7FFFH to 8000H or

DAC glitch

40

40

nV-s

8000H to 7FFFH

DIGITAL INPUT

VIH

0.7 × VDD

0.7 × VDD

V

VIL

0.3 × VDD

0.3 × VDD

V

IIH

±10

±10

µA

IIL

±10

±10

µA

DIGITAL OUTPUT

VOH

IOH = –0.8 mA

3.6

4.5

3.6

4.5

V

VOL

IOL = 1.6 mA

0.3

0.4

0.3

0.4

V

POWER SUPPLY

VDD

4.75

5.0

5.25

4.75

5.0

5.25

V

VCC

4.75

5.0

5.25

4.75

5.0

5.25

V

VSS

0

0

0

0

0

0

V

ICC

1.5

2

1.5

2

mA

IDD

50

50

µA

Power

7.5

10

7.5

10

mW

(1)

If VSS = 0 V specification applies at Code 0040H and above due to possible negative zero-scale error.

4