VSP5621 datasheet(5/41 Pages) TI1

Part #	VSP5621

Description	16-Bit, 4-Channel, CCD/CMOS Sensor Analog Front-End with LED Driver

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Manufacturer	TI1 [Texas Instruments]

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VSP5620

VSP5621

VSP5622

www.ti.com

SBES022

– JULY 2011

ELECTRICAL CHARACTERISTICS: VSP5620 (continued)

All specifications at TA = +25°C, supply voltage = +3.3 V, conversion rate = 8.75 MHz, and four-channel mode, unless

otherwise noted.

VSP5620

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

TRANSFER CHARACTERISTICS

Channels

2

4

Channels

Resolution

16

Bits

LVDS, two- and three-channel mode

1

11.66

MHz/Ch

LVDS, four-channel mode

1

8.75

MHz/Ch

CMOS 4-bit

× 4, two-channel mode

1

10

MHz/Ch

Conversion rate

CMOS 4-bit

× 4, three-channel

1

6.7

MHz/Ch

mode

CMOS 4-bit

× 4, four-channel mode

1

5

MHz/Ch

Maximum differential nonlinearity

Gain = 1 V/V, 12-bit

±0.5

LSB

Maximum integral nonlinearity

Gain = 1 V/V, 12-bit

±2

LSB

No missing codes

Specified

Signal-to-noise ratio

SNR

Gain = 1 V/V

72(2)

76

dB

Analog channel crosstalk

Gain = 1 V/V, 12-bit, full-scale step

±3

LSB

Total absolute gain error

–10

10

%

ANALOG PROGRAMMABLE GAIN (APG)

Gain range

APG_x

0.5

3.5

V/V

Gain step

63

Steps

Gain relative error

Basis gain = 1 V/V

–10

10

%

Gain monotonicity

Only APG_x

Specified

DIGITAL PROGRAMMABLE GAIN (DPG)

Gain range

DPG_x

1.0

2.0

V/V

Gain step

255

Steps

Gain monotonicity

Only DPG_x

Specified

AIN REFERENCE LEVEL (REF_AIN)

Setting code = 0

0.5

V

Setting code = 1

1.1

V

Internal DAC output

VRINT

Setting code = 2 (default)

1.5

V

Setting code = 3

2.0

V

Internal DAC output tolerance

VRINT

–10

10

%

Internal DAC output temperature

VRINT

TA = 0°C to +85°C

(2)

–2

2

%

drift

External reference range

VREXT

0.5

VDD

– 0.9

V

INPUT CLAMP

Internal reference level clamp

VRINT

V

Clamp level

VCLP

External reference level clamp

VREXT

V

Fixed level clamp

2.2

V

Clamp-on resistance

RCLP

500

Ω

OFFSET DAC

Resolution

8

Bits

Output range

±250

mV

Setting tolerance

–10

10

%

Temperature drift

TA = 0°C to +85°C

(2)

–2

2

%

(2)

Specified by design.

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