CY8CKIT-059 datasheet(90/140 Pages) INFINEON

90 / 140 page

Document Number: 001-84932 Rev. *N

Page 89 of 139

PSoC® 5LP: CY8C58LP Family

Datasheet

Rin_Buff

ADC input resistance

Input buffer used

–

Rin_ADC16 ADC input resistance

Input buffer bypassed, 16-bit,

Range = ±1.024 V

–74[46]

–k

Rin_ADC12 ADC input resistance

Input buffer bypassed, 12 bit,

Range = ±1.024 V

–148[46]

–k

Rin_ExtRef ADC external reference input resistance

–

70[46, 47]

–k

Vextref

ADC external reference input voltage, see

also internal reference in Voltage

Reference on page 93

Pins P0[3], P3[2]

0.9

–

1.3

Current Consumption

IDD_20

IDDA + IDDD Current consumption, 20 bit[48] 187 sps, unbuffered

–

1.5

IDD_16

IDDA + IDDD Current consumption, 16 bit[48] 48 ksps, unbuffered

–

1.5

IDD_12

IDDA + IDDD Current consumption, 12 bit[48] 192 ksps, unbuffered

–

1.95

IDD_8

IDDA + IDDD Current consumption, 8 bit[48] 384 ksps, unbuffered

–

1.95

IBUFF

Buffer current consumption[48]

––

2.5

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

Parameter

Description

Conditions

Min

Typ

Max

Units

Table 11-21. Delta-sigma ADC AC Specifications

Parameter

Description

Conditions

Min

Typ

Max

Units

Startup time

–

Samples

THD

Total harmonic distortion[48]

Buffer gain = 1, 16 bit,

Range = ±1.024 V

–

0.0032

20-Bit Resolution Mode

SR20

Sample rate[48]

Range = ±1.024 V, unbuffered

7.8

–

187

sps

BW20

Input bandwidth at max sample rate[48]

Range = ±1.024 V, unbuffered

–

16-Bit Resolution Mode

SR16

Sample rate[48]

Range = ±1.024 V, unbuffered

–

ksps

BW16

Input bandwidth at max sample rate[48]

Range = ±1.024 V, unbuffered

–

kHz

SINAD16int Signal to noise ratio, 16-bit, internal

reference[48]

Range = ±1.024V, unbuffered

–

TA ≤ 105 °C

–

SINAD16ext Signal to noise ratio, 16-bit, external

reference[48]

Range = ±1.024 V, unbuffered

–

12-Bit Resolution Mode

SR12

Sample rate, continuous, high power[48]

Range = ±1.024 V, unbuffered

–

192

ksps

BW12

Input bandwidth at max sample rate[48]

Range = ±1.024 V, unbuffered

–

kHz

SINAD12int Signal to noise ratio, 12-bit, internal

reference[48]

Range = ±1.024 V, unbuffered

–

8-Bit Resolution Mode

SR8

Sample rate, continuous, high power[48]

Range = ±1.024 V, unbuffered

–

384

ksps

BW8

Input bandwidth at max sample rate[48]

Range = ±1.024 V, unbuffered

–

kHz

SINAD8int

Signal to noise ratio, 8-bit, internal

reference[48]

Range = ±1.024 V, unbuffered

–

Notes

46. By using switched capacitors at the ADC input an effective input resistance is created. Holding the gain and number of bits constant, the resistance is proportional

to the inverse of the clock frequency. This value is calculated, not measured. For more information see the Technical Reference Manual.

47. Recommend an external reference device with an output impedance <100 Ω, for example, the LM185/285/385 family. A 1 µF capacitor is recommended. For more

information, see AN61290 - PSoC® 3 and PSoC 5LP Hardware Design Considerations.

48. Based on device characterization (not production tested).

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