CY8C3865LTI-059 datasheet(84/129 Pages) CYPRESS

84 / 129 page

PSoC® 3: CY8C38 Family

Data Sheet

Document Number: 001-11729 Rev. *R

Page 84 of 129

Table 11-21. Delta-sigma ADC AC Specifications

Vextref

ADC external reference input voltage, see

also internal reference in Voltage

Reference on page 87

Pins P0[3], P3[2]

0.9

–

1.3

Current Consumption

IDD_20

Current consumption, 20 bit[38]

187 sps, unbuffered

–

1.25

IDD_16

Current consumption, 16 bit[38]

48 ksps, unbuffered

–

1.2

IDD_12

Current consumption, 12 bit[38]

192 ksps, unbuffered

–

1.4

IBUFF

Buffer current consumption[38]

––

2.5

Parameter

Description

Conditions

Min

Typ

Max

Units

Startup time

–

Samples

THD

Total harmonic distortion[38]

Buffer gain = 1, 16 bit,

Range = ±1.024 V

–

0.0032

20-Bit Resolution Mode

SR20

Sample rate[38]

Range = ±1.024 V, unbuffered

7.8

–

187

sps

BW20

Input bandwidth at max sample rate[38]

Range = ±1.024 V, unbuffered

–

16-Bit Resolution Mode

SR16

Sample rate[38]

Range = ±1.024 V, unbuffered

–

ksps

BW16

Input bandwidth at max sample rate[38]

Range = ±1.024 V, unbuffered

–

kHz

SINAD16int Signal to noise ratio, 16-bit, internal

reference[38]

Range = ±1.024V, unbuffered

–

SINAD16ext Signal to noise ratio, 16-bit, external

reference[38]

Range = ±1.024 V, unbuffered

–

12-Bit Resolution Mode

SR12

Sample rate, continuous, high power[38]

Range = ±1.024 V, unbuffered

–

192

ksps

BW12

Input bandwidth at max sample rate[38]

Range = ±1.024 V, unbuffered

–

kHz

SINAD12int Signal to noise ratio, 12-bit, internal

reference[38]

Range = ±1.024 V, unbuffered

–

8-Bit Resolution Mode

SR8

Sample rate, continuous, high power[38]

Range = ±1.024 V, unbuffered

–

384

ksps

BW8

Input bandwidth at max sample rate[38]

Range = ±1.024 V, unbuffered

–

kHz

SINAD8int

Signal to noise ratio, 8-bit, internal

reference[38]

Range = ±1.024 V, unbuffered

–

Table 11-20. 20-bit Delta-sigma ADC DC Specifications (continued)

Parameter

Description

Conditions

Min

Typ

Max

Units

Note

38. Based on device characterization (Not production tested).

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