CC2540T_15 Datasheet, PDF (14/37 Pages) Texas Instruments – SimpleLink CC2540T 2.4-GHz Bluetooth Low Energy Wireless MCU

CC2540T
SWRS172 – JULY 2014
4.18 ADC Characteristics
T_A = 25°C and VDD = 3 V
PARAMETER
Input voltage
External reference voltage
External reference voltage differential
Input resistance, signal
Full-scale signal⁽¹⁾
ENOB ⁽¹⁾
Effective number of bits
THD
Useful power bandwidth
Total harmonic distortion
Signal to nonharmonic ratio
CMRR
DNL
Common-mode rejection ratio
Crosstalk
Offset
Gain error
Differential nonlinearity
INL
Integral nonlinearity
SINAD
(–THD+N)
Signal-to-noise-and-distortion
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TEST CONDITIONS
MIN TYP MAX UNIT
VDD is voltage on AVDD5 pin
0
VDD
V
VDD is voltage on AVDD5 pin
0
VDD
V
VDD is voltage on AVDD5 pin
0
VDD
V
Simulated using 4-MHz clock speed
197
kΩ
Peak-to-peak, defines 0 dBFS
2.97
V
Single-ended input, 7-bit setting
5.7
Single-ended input, 9-bit setting
7.5
Single-ended input, 10-bit setting
9.3
Single-ended input, 12-bit setting
10.3
Differential input, 7-bit setting
Differential input, 9-bit setting
6.5
bits
8.3
Differential input, 10-bit setting
10
Differential input, 12-bit setting
11.5
10-bit setting, clocked by RCOSC
9.7
12-bit setting, clocked by RCOSC
10.9
7-bit setting, both single and differential
0–20
kHz
Single ended input, 12-bit setting, –6
dBFS ⁽¹⁾
Differential input, 12-bit setting, –6
dBFS ⁽¹⁾
Single-ended input, 12-bit setting⁽¹⁾
Differential input, 12-bit setting⁽¹⁾
–75.2
dB
–86.6
70.2
79.3
Single-ended input, 12-bit setting, –6
dBFS ⁽¹⁾
78.8
dB
Differential input, 12-bit setting, –6
dBFS ⁽¹⁾
88.9
Differential input, 12-bit setting, 1-kHz
sine (0 dBFS), limited by ADC resolution
>84
dB
Single ended input, 12-bit setting, 1-kHz
sine (0 dBFS), limited by ADC resolution
>84
dB
Midscale
–3
mV
0.68%
12-bit setting, mean⁽¹⁾
12-bit setting, maximum⁽¹⁾
0.05
LSB
0.9
12-bit setting, mean⁽¹⁾
4.6
12-bit setting, maximum⁽¹⁾
13.3
LSB
12-bit setting, mean, clocked by RCOSC
10
12-bit setting, max, clocked by RCOSC
Single ended input, 7-bit setting⁽¹⁾
Single ended input, 9-bit setting⁽¹⁾
Single ended input, 10-bit setting⁽¹⁾
Single ended input, 12-bit setting⁽¹⁾
Differential input, 7-bit setting⁽¹⁾
Differential input, 9-bit setting⁽¹⁾
Differential input, 10-bit setting⁽¹⁾
Differential input, 12-bit setting⁽¹⁾
29
35.4
46.8
57.5
66.6
dB
40.7
51.6
61.8
70.8
(1) Measured with 300-Hz sine-wave input and VDD as reference.
14
Specifications
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