ADS1605

ADS1606

SBAS274H − MARCH 2003 − REVISED MAY 2007

www.ti.com

4

ELECTRICAL CHARACTERISTICS (continued)

All specifications at −40

°C to +85°C, AVDD = 5V, DVDD = IOVDD = 3V, fCLK = 40MHz, External VREF = +3V, 2XMODE = low, VCM = 2.0V,

FIFO disabled, and RBIAS = 37kΩ, unless otherwise noted.

PARAMETER

UNIT

MAX

TYP

MIN

TEST CONDITIONS

fIN = 100kHz, −2dBFS

96

dB

fIN = 100kHz, −6dBFS

101

dB

fIN = 100kHz, −20dBFS

85

96

dB

fIN = 500kHz, −2dBFS

95

dB

Spurious free dynamic range (SFDR)

fIN = 500kHz, −6dBFS

100

dB

Spurious free dynamic range (SFDR)

fIN = 500kHz, −20dBFS

95

dB

fIN = 2MHz, −2dBFS

102

dB

fIN = 2MHz, −6dBFS

105

dB

fIN = 2MHz, −20dBFS

96

dB

Intermodulation distortion (IMD)

f1 = 1.99MHz, −6dBFS

f = 2.00MHz, −6dBFS

−94

dB

Intermodulation distortion (IMD)

f1 = 1.99MHz, −6dBFS

f2 = 2.00MHz, −6dBFS

−94

dB

Aperture delay

4

ns

Digital Filter Characteristics

Passband

0

2.2

f

CLK

40MHz

MHz

Passband ripple

±0.0025

dB

Passband transition

−0.1dB attenuation

2.3

f

CLK

40MHz

MHz

Passband transition

−3.0dB attenuation

2.45

f

CLK

40MHz

MHz

Stop band

2.8

f

CLK

40MHz

37.2

f

CLK

40MHz

MHz

Stop band attenuation

72

dB

Group delay

5.2

40MHz

f

CLK

µs

Settling time

To

±0.001%

9.4

40MHz

f

CLK

µs

Static Specifications

Resolution

16

Bits

No missing codes

16

Bits

Input-referred noise

1.0

LSB, rms

Integral nonlinearity

−1.5dBFS signal

±0.75

LSB

Differential nonlinearity

±0.25

LSB

Offset error

0.05

%FSR

Offset error drift

1

ppmFSR/

°C

Gain error

0.25

%

Gain error drift

Excluding reference drift

10

ppm/

°C

Common-mode rejection

At dc

75

dB

Power-supply rejection

At dc

65

dB