ADS7829IDRBR datasheet(3/20 Pages) TI

tên linh kiện	ADS7829IDRBR

Giải thích chi tiết về linh kiện	10/8/12-BIT HIGH SPEED 2.7 V microPOWER SAMPLING ANALOG-TO-DIGITAL CONVERTER

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ADS7826

ADS7827

ADS7829

SLAS388 – JUNE 2003

SPECIFICATIONS

At -40

°C to 85°C, V

CC = 2.7 V, Vref = 2.5 V, unless otherwise specified.

ADS7829IB

ADS7829

ADS7826I

ADS7827I

TEST

PARAMETER

UNIT

CONDITIONS

MIN

TYP

MAX

MIN

TYP

MAX

MIN

TYP

MAX

MIN

TYP

MAX

ANALOG INPUT

Full-scale input

+In - (-In)

0

Vref

0

Vref

0

Vref

0

Vref

V

span

Absolute input

+In

-0.2

VCC +0.2

-0.2

VCC +0.2

-0.2

VCC +0.2

-0.2

VCC +0.2

V

range

-IN

-0.2

1.0

-0.2

1.0

-0.2

1.0

-0.2

1.0

V

Capacitance

25

pF

Leakage current

±1

µA

SYSTEM PERFORMANCE

Resolution

12

10

8

Bits

No missing codes

12

11

10

8

Bits

Integral linearity error

-1.25

±0.4

1.25

-2

±0.8

2

-1

±0.3

1

-1

±0.2

1

LSB (1)

Differential linearity error

-1

±0.4

1.25

-2

±0.8

2

-1

±0.3

1

-1

±0.2

1

LSB

Offset error

-3

±0.3

3

-3

±0.6

3

-2

±0.4

2

-1

±0.4

1

LSB

Gain error

-2

±0.3

2

-2

±0.6

2

-1

±0.3

1

-1

±0.2

1

LSB

Noise

33

µVrms

Power supply rejection

82

94

98

dB

SAMPLING DYNAMICS

Conversion time

12

10

8

DCLOCK

Cycles

Acquisition time

1.5

DCLOCK

Cycles

fDCLOCK

16 x fsample

14 x fsample

12 x fsample

kHz

Throughput

2.7 V

≤ V

CC

125

200

250

kHz

(sample rate)

≤ 5.25 V (2)

fsample

2.0 V

≤ V

CC

75

85

100

kHz

< 2.7 V (3) (2)

DYNAMIC CHARACTERISTICS

Total harmonic distortion

-82

-80

-78

-72

dB

SINAD

VIN = 2.5 Vpp at

72

70

62

50

dB

1 kHz

Spurious free

VIN = 2.5 Vpp at

85

82

81

68

dB

dynamic range

1 kHz

(SFDR)

REFERENCE INPUT

Voltage range

2.7 V

≤V

CC≤3.6 V

0.05

VCC-0.2

0.05

VCC-0.2

0.05

VCC-0.2

0.05

VCC-0.2

V

Resistance

CS = GND,

5

G

Ω

fSAMPLE = 0 Hz

CS = VCC

5

G

Ω

Current drain

Full speed at Vref/2

12

60

12

60

20

100

24

120

µA

fSAMPLE = 7.5 kHz

0.8

µA

CS = VCC

0.001

3

0.001

3

0.001

3

0.001

3

µA

DIGITAL INPUT/OUTPUT

Logic family

CMOS

Logic levels

VIH

IIH = +5 µA

2.0

5.5

2.0

5.5

2.0

5.5

2.0

5.5

V

VIL

IIL = +5 µA

-0.3

0.8

-0.3

0.8

-0.3

0.8

-0.3

0.8

V

(1)

LSB means Least Significant Bit and is equal to Vref / 2

N where N is the resolution of ADC. For example, with V

ref equal to 2.5 V, one

LSB is 0.61 mV for a 12 bit ADC (ADS7829).

(2)

See the Typical Performance Curves for VCC = 5 V and Vref = 5 V.

(3)

The maximum clock rate of the ADS7826/27/29 are less than 1.2 MHz at 2 V

≤V

CC <2.7 V. The recommended regerence voltage is

between 1.25 V to 1.024 V.

3

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nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Texas Instruments	ADS7829IDRBR	1Mb / 26P	[Old version datasheet] ANALOG-TO-DIGITAL CONVERTER
Texas Instruments	ADS7829IDRBRG4	1Mb / 26P	[Old version datasheet] ANALOG-TO-DIGITAL CONVERTER

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nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
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