ADS7809

4

SBAS017C

www.ti.com

ELECTRICAL CHARACTERISTICS (Cont.)

At TA = –40°C to +85°C, fS = 100kHz, VDIG = VANA = +5V, using internal reference and fixed resistors as shown in Figure 4, unless otherwise specified.

ADS7809U

ADS7809UB

PARAMETER

CONDITIONS

MIN

TYP

MAX

MIN

TYP

MAX

UNITS

DIGITAL OUTPUTS

Data Format

Serial 16 bits

Data Co

Binary Two’s Complement or Straight Binary

Pipeline Delay

Conversion results only available after completed conversion.

Data Clock

Selectable for internal or external data clock

Internal

EXT/INT LOW

2.3

✻

MHz

(Output Only When

Transmitting Data)

External

EXT/INT HIGH

0.1

10

✻✻

MHz

(Can Run Continually)

VOL

ISINK = 1.6mA

+0.4

✻

V

VOH

ISOURCE = 500µA+4

✻

V

Leakage Current

High-Z State,

±5

✻

µA

VOUT = 0V to VDIG

Output Capacitance

High-Z State

15

✻

pF

POWER SUPPLIES

Specified Performance

VDIG

Must be

≤ V

ANA

+4.75

+5

+5.25

✻✻✻

V

VANA

+4.75

+5

+5.25

✻✻✻

V

IDIG

0.3

✻

mA

IANA

16

✻

mA

Power Dissipation: PWRD LOW

VANA = VDIG = 5V, fS = 100kHz

100

✻

mW

PWRD HIGH

50

✻

µW

TEMPERATURE RANGE

Specified Performance

–40

+85

✻✻

°C

Derated Performance

–55

+125

✻✻

°C

Storage

–65

+150

✻✻

°C

Thermal Resistance (

θ

JA)

SO

75

✻

°C/W

✻ Same as specification for ADS7809U.

NOTES: (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) As measured with fixed resistors shown in Figure 4. Adjustable to zero with external potentiometer.

(4) For bipolar input ranges, 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. For unipolar input ranges, full-scale error

is the deviation of the last code transition divided by the transition voltage. It also includes the effect of offset error.

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

±10V input.

(6) Full-Power Bandwidth defined as Full-Scale input frequency at which Signal-to-(Noise + Distortion) degrades to 60dB.

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

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