DAC2902

3

SBAS167C

www.ti.com

ELECTRICAL CHARACTERISTICS (continued)

At TMIN to TMAX, +VA = +5V, +VD = +3.3V, differential transformer coupled output, and 50Ω doubly-terminated, unless otherwise noted. Independent Gain mode.

DYNAMIC PERFORMANCE (Cont.)

Signal-to-Noise Ratio (SNR)

0dBFS Output

68

dBc

fOUT = 5.02MHz, fCLOCK = 50MHz

Signal-to-Noise and Distortion (SINAD)

0dBFS Output

67

dBc

fOUT = 5.02MHz, fCLOCK = 50MHz

Channel Isolation

fOUT = 1MHz, fCLOCK = 52MSPS

85

dBc

fOUT = 20MHz, fCLOCK = 125MSPS

77

dBc

Output Settling Time(2)

to 0.1%

30

ns

Output Rise Time(2)

10% to 90%

2

ns

Output Fall Time(2)

10% to 90%

2

ns

Glitch Impulse

2pV-s

DC ACCURACY

Full-Scale Output Range(3)(FSR)

All Bits HIGH, IOUT

220

mA

Output Compliance Range

–1.0

+1.25

V

Gain Error—Full-Scale

With Internal Reference

–5

±1+5

%FSR

Gain Error

With External Reference

–2.5

±1

+2.5

%FSR

Gain Matching

With Internal Reference

–2.0

0.5

+2.0

%FSR

Gain Drift

With Internal Reference

±50

ppmFSR/

°C

Offset Error

With Internal Reference

–0.02

+0.02

%FSR

Offset Drift

With Internal Reference

±0.2

ppmFSR/

°C

Power-Supply Rejection, +VA

+5V,

±10%

–0.2

+0.2

%FSR/V

Power-Supply Rejection, +VD

+3.3V,

±10%

–0.025

+0.025

%FSR/V

Output Noise

IOUT = 20mA, RLOAD = 50Ω

50

pA/

√Hz

IOUT = 2mA

30

pA/

√Hz

Output Resistance

200

k

Ω

Output Capacitance

IOUT, IOUT to Ground

6

pF

REFERENCE/CONTROL AMP

Reference Voltage

+1.18

+1.25

+1.31

V

Reference Voltage Drift

±50

ppmFSR/

°C

Reference Output Current

100

nA

Reference Multiplying Bandwidth

0.3

MHz

Input Compliance Range

+0.5

+1.25

V

DIGITAL INPUTS

Logic Coding

Straight Binary

Logic High Voltage, VIH

+VD = +5V

3.5

5

V

Logic Low Voltage, VIL

+VD = +5V

0

1.2

V

Logic High Voltage, VIH

+VD = 3.3V

2

3

V

Logic Low Voltage, VIL

+VD = 3.3V

0

0.8

V

Logic High Current, IIH(4)

+VD = 3.3V

±10

µA

Logic Low Current

+VD = 3.3V

±10

µA

Input Capacitance

5pF

POWER SUPPLY

Supply Voltages

+VA

+3.0

+5

+5.5

V

+VD

+3.0

+3.3

+5.5

V

Supply Current

IVA(5)

VA = +5V, lOUT = 20mA

58

65

mA

IVA(5)

Power-Down Mode

1.7

3

mA

IVD(5)

4.2

7

mA

IVD(6)

17

19.5

mA

Power Dissipation(5)

VA = +5V, VD = 3.3V, lOUT = 20mA

310

350

mW

Power Dissipation(6)

VA = +5V, VD = 3.3V, lOUT = 20mA

348

390

mW

Power Dissipation(5)

VA = +5V, VD = 3.3V, lOUT = 2mA

130

mW

Power Dissipation

Power-Down Mode

23

38

mW

Thermal Resistance, TQFP-48

θ

JA

60

°C/W

θ

JC

13

°C/W

TEMPERATURE RANGE

Specified

Ambient

–40

+85

°C

Operating

Ambient

–40

+85

°C

NOTES: (1) At output lOUT, while driving a virtual ground. (2) Measured single-ended into 50Ω load. (3) Nominal full-scale output current is 32 × IREF; see Application

section for details. (4) Typically 45

µA for the PD pin, which has an internal pull-down resistor. (5) Measured at f

CLOCK = 25MSPS and fOUT = 1MHz. (6) Measured

at fCLOCK = 100MSPS and fOUT = 40MHz.

DAC2902Y

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNIT