2

ADS7835

®

SPECIFICATIONS

At TA = –40°C to +85°C, +VCC = +5V, fSAMPLE = 500kHz, fCLK = 16 • fSAMPLE, and internal +2.5V reference, unless otherwise specified.

The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN

assumes no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject

to change without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not

authorize or warrant any BURR-BROWN product for use in life support devices and/or systems.

ADS7835E

ADS7835EB

PARAMETER

CONDITIONS

MIN

TYP

MAX

MIN

TYP

MAX

UNITS

RESOLUTION

12

T

Bits

ANALOG INPUT(1)

Input Voltage Range

±2.5V with the 2.5V

–VREF

+VREF

TT

V

Internal Reference

Input Capacitance

25

T

pF

Input Resistance

During Conversion (CONV = LOW)

2

T

k

Ω

SYSTEM PERFORMANCE

No Missing Codes

12

T

Bits

Integral Linearity

±1

±2

±0.5

±1

LSB(2)

Differential Linearity

±0.8

±0.5

±1

LSB

Bipolar Offset Error

±2

±10

±1

±5

LSB

Positive Fulll-Scale Error(3)

At 25

°C

±12

±20

±7

±12

LSB

–40

°C to +85°C

±35

±25

LSB

Negative Full-Scale Error(3)

At 25

°C

±12

±20

±7

±12

LSB

–40

°C to +85°C

±35

±25

LSB

Noise

200

T

µVrms

Power Supply Rejection Ratio

Worst-Case

∆, +V

CC = 5V ±5%

0.3

T

LSB

SAMPLING DYNAMICS

Conversion Time

1.625

T

µs

Acquisition Time

0.350

T

µs

Throughput Rate

500

T

kHz

Aperture Delay

5

T

ns

Aperture Jitter

30

T

ps

Step Response

375

T

ns

DYNAMIC CHARACTERISTICS

Signal-to-Noise Ratio

VIN = 5Vp-p at 10kHz

72

T

dB

Total Harmonic Distortion(4)

VIN = 5Vp-p at 10kHz

–78

–72

–82

–75

dB

Signal-to-(Noise+Distortion)

VIN = 5Vp-p at 10kHz

68

70

70

72

dB

Spurious Free Dynamic Range

VIN = 5Vp-p at 10kHz

72

78

75

82

dB

REFERENCE OUTPUT

Voltage

IOUT = 0

2.475

2.50

2.525

2.48

T

2.52

V

Source Current(5)

Static Load

50

T

µA

Line Regulation

4.75V

≤ V

CC ≤ 5.25V

0.2

T

mV

REFERENCE INPUT

Range

2.3

2.9

TT

V

Resistance(6)

To Internal Reference Voltage

10

T

k

Ω

DIGITAL INPUT/OUTPUT

Logic Family

CMOS

T

Logic Levels:

VIH

IIH ≤ +5µA

3.0

+VCC + 0.3

TT

V

VIL

IIL ≤ +5µA

–0.3

0.8

TT

V

VOH

IOH = –500µA

3.5

T

V

VOL

IOL = 500µA

0.4

T

V

Data Format

Binary Two’s Complement

T

POWER SUPPLY REQUIREMENT

+VCC

Specified Performance

4.75

5.25

TT

V

Quiescent Current

fSAMPLE = 500kHz

3.5

T

mA

Power-Down

0.5

T

mA

Power Dissipation

17.5

30

TT

mW

Power-Down

2.5

T

mW

TEMPERATURE RANGE

Specified Performance

–40

+85

TT

°C

T Specifications same as ADS7835E.

NOTES: (1) Ideal input span, does not include gain or offset error. (2) LSB means Least Significant Bit, with VREF equal to +2.5V, one LSB is 1.22mV. (3) Measured

relative to an ideal positive full scale of 2.499V for positive full-scale error. Measured relative to an ideal negative full scale of –2.499V for negative full-scale error.

(4) Calculated on the first nine harmonics of the input frequency. (5) If the internal reference is required to source current to an external load, the reference voltage

will change due to the internal 10k

Ω resistor. (6) Can vary ±30%.