THS1040

SLAS290C − OCTOBER 2001 − REVISED OCTOBER 2004

5

www.ti.com

electrical characteristics

over recommended operating conditions, AVDD = 3 V, DVDD = 3 V, fs = 40 MSPS/50% duty cycle, MODE = AVDD (internal reference),

differential input range = 1 VPP and 2 VPP, TA = Tmin to Tmax (unless otherwise noted)

power supply

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

AVDD

Supply voltage

3

3.6

V

DVDD

Supply voltage

3

3.6

V

ICC

Operating supply current

See Note 4

33

40

mA

PD

Power dissipation

See Note 4

100

120

mW

PD(STBY)

Standby power

75

µW

Power up time for all references from standby, t(PU)

10

µF bypass

770

µs

t(WU)

Wake-up time

See Note 5

45

µs

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Reference voltage top, REFT

VREF = 0.5 V

AVDD = 3 V

1.75

V

Reference voltage top, REFT

VREF = 1 V

AVDD = 3 V

2

V

Reference voltage bottom, REFB

VREF = 0.5 V

AVDD = 3 V

1.25

V

Reference voltage bottom, REFB

VREF = 1 V

AVDD = 3 V

1

V

Input resistance between REFT and REFB

1.4

1.9

2.5

k

Ω

VREF (on-chip voltage reference generator)

PARAMETER

MIN

TYP

MAX

UNIT

Internal 0.5-V reference voltage (REFSENSE = VREF)

0.45

0.5

0.55

V

Internal 1-V reference voltage (REFSENSE = AGND)

0.95

1

1.05

V

Reference input resistance (REFSENSE = AVDD, MODE = AVDD/2 or AVDD)

7

14

21

k

Ω

dc accuracy

PARAMETER

MIN

TYP

MAX

UNIT

Resolution

10

Bits

INL

Integral nonlinearity (see definitions)

−1.5

±0.75

1.5

LSB

DNL

Differential nonlinearity (see definitions)

−0.9

±0.45

0.9

LSB

Zero error (see definitions)

−1.5

0.7

1.5

%FSR

Full-scale error (see definitions)

−3

2.2

3

%FSR

Missing code

No missing code assured

NOTE 4: Apply a −1 dBFS 10-KHz triangle wave at AIN+ and AIN− with an internal bandgap reference and ADC reference enabled, and BIASREF

enabled at AVDD/2. Any additional load at BIASREF or VREF may require additional current.

NOTE 5: Wake-up time is from the power-down state to accurate ADC samples being taken and is specified for MODE = AGND with external

reference sources applied to the device at the time of release of power-down, and an applied 40-MHz clock. Circuits that need to power

up are the bandgap, bias generator, ADC, and SHA.

NOTE 6: External reference values are listed in the Recommended Operating Conditions Table.