ADS7813

3

SBAS043C

www.ti.com

SAMPLING DYNAMICS

Aperture Delay

40

✻

ns

Aperture Jitter

20

✻

ps

Transient Response

FS Step

5

✻

µs

Overvoltage Recovery(7)

750

✻

ns

REFERENCE

Internal Reference Voltage

2.48

2.5

2.52

✻✻

✻

V

Internal Reference Source Current

100

✻

µA

Internal Reference Drift

8

✻

ppm/

°C

External Reference Voltage Range

2.3

2.5

2.7

✻✻

✻

V

External Reference Current Drain

VREF = +2.5V

100

✻

µA

CAP Compensation Capacitors ESR(8)

3

✻

Ω

DIGITAL INPUTS

Logic Levels

VIL

–0.3

+0.8

✻✻

V

VIH(9)

+2.0

VS +0.3V

✻✻

V

IIL

±10

✻

µA

IIH

±10

✻

µA

DIGITAL OUTPUTS

Data Format

Data Coding

VOL

ISINK = 1.6mA

+0.4

✻

V

VOH

ISOURCE = 500µA+4

✻

V

Leakage Current

High-Z State,

±1

✻

µA

VOUT = 0V to VS

Output Capacitance

High-Z State

15

15

pF

POWER SUPPLY

VS

+4.75

+5

+5.25

✻✻

✻

V

Power Dissipation

fS = 40kHz

35

✻

mW

TEMPERATURE RANGE

Specified Performance

–40

+85

✻✻

°C

Derated Performance

–55

+125

✻✻

°C

✻ Same specification as grade to the left.

NOTES:

ELECTRICAL CHARACTERISTICS (Cont.)

At TA = –40°C to +85°C, fS = 40kHz, VS = +5V ±5%, using internal reference, unless otherwise specified.

ADS7813P, U

ADS7813PB, UB

PARAMETER

CONDITIONS

MIN

TYP

MAX

MIN

TYP

MAX

UNITS

Serial

Binary Two’s Complement

(1) LSB means Least Significant Bit. For the

±10V input range, one LSB is 305µV.

(2) Typical rms noise at worst case transitions and temperatures.

(3) Full scale error is the worst case of –Full Scale or +Full Scale untrimmed deviation from ideal first and last code transitions, divided by the

transition voltage (not divided by the full-scale range) and includes the effect of offset error.

(4) After the ADS7813 is initially powered on and fully settles, this is the time delay after it is brought out of Power Down Mode until all internal

settling occurs and the analog input is acquired to rated accuracy, and normal conversions can begin again.

(5) All specifications in dB are referred to a full-scale input.

(6) Useable Bandwidth defined as Full-Scale input frequency at which Signal-to-(Noise+Distortion) degrades to 60dB, or 10 bits of accuracy.

(7) Recovers to specified performance after 2 x FS input overvoltage.

(8) ESR = total equivalent series resistance for the compensation capacitors.

(9) The minimum VIH level for the DATACLK signal is 3V.