TLV5626

2.7-V TO 5.5-V LOW-POWER DUAL 8-BIT DIGITAL-TO-ANALOG

CONVERTER WITH INTERNAL REFERENCE AND POWER DOWN

SLAS236A –JUNE 1999 – REVISED JUNE 2000

4

POST OFFICE BOX 655303

electrical characteristics over recommended operating conditions (unless otherwise noted)

power supply

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VDD = 5 V,

Fast

4.2

7

mA

DD

Int. ref.

Slow

2

3.6

mA

VDD = 3 V,

Fast

3.7

6.3

mA

IDD

Power supply current

No load,

All inputs = AGND or VDD

DD

Int. ref.

Slow

1.7

3.0

mA

IDD

Power supply current

All inputs = AGND or VDD,

DAC latch = 0x800

VDD = 5 V,

Fast

3.8

6.3

mA

DD

Ext. ref.

Slow

1.7

3.0

mA

VDD = 3 V,

Fast

3.4

5.7

mA

DD

Ext. ref.

Slow

1.4

2.6

mA

Power-down supply current

1

µA

PSRR

Power supply rejection ratio

Zero scale, See Note 2

–65

dB

PSRR

Power supply rejection ratio

Full scale,

See Note 3

–65

dB

NOTES:

2. Power supply rejection ratio at zero scale is measured by varying VDD and is given by:

PSRR = 20 log [(EZS(VDDmax) – EZS(VDDmin))/VDDmax]

3. Power supply rejection ratio at full scale is measured by varying VDD and is given by:

PSRR = 20 log [(EG(VDDmax) – EG(VDDmin))/VDDmax]

static DAC specifications

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Resolution

8

bits

INL

Integral nonlinearity, end point adjusted

See Note 4

±0.4

±1

LSB

DNL

Differential nonlinearity

See Note 5

±0.1

±0.5

LSB

EZS

Zero-scale error (offset error at zero scale)

See Note 6

±24

mV

EZS TC

Zero-scale-error temperature coefficient

See Note 7

10

ppm/

°C

EG

Gain error

See Note 8

±0.6

% full

scale V

EG TC

Gain error temperature coefficient

See Note 9

10

ppm/

°C

NOTES:

4. The relative accuracy or integral nonlinearity (INL) sometimes referred to as linearity error, is the maximum deviation of the output

from the line between zero and full scale excluding the effects of zero code and full-scale errors.

5. The differential nonlinearity (DNL) sometimes referred to as differential error, is the difference between the measured and ideal 1

LSB amplitude change of any two adjacent codes. Monotonic means the output voltage changes in the same direction (or remains

constant) as a change in the digital input code.

6. Zero-scale error is the deviation from zero voltage output when the digital input code is zero.

7. Zero-scale-error temperature coefficient is given by: EZS TC = [EZS (Tmax) – EZS (Tmin)]/Vref × 106/(Tmax – Tmin).

8. Gain error is the deviation from the ideal output (2Vref – 1 LSB) with an output load of 10 k excluding the effects of the zero-error.

9. Gain temperature coefficient is given by: EG TC = [EG(Tmax) – EG (Tmin)]/Vref × 106/(Tmax – Tmin).

output specifications

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VO

Output voltage

RL = 10 kΩ

0

VDD–0.4

V

Output load regulation accuracy

VO = 4.096 V, 2.048 V,

RL = 2 kΩ vs 10 k©

±0.25

% full

scale V