WM8146 查看數據表（PDF） - Wolfson Microelectronics plc
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WM8146 Datasheet PDF : 17 Pages
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WM8146
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ELECTRICAL CHARACTERISTICS
Test Conditions
AVDD = DVDD1 = DVDD2 =4.75 to 5.25V, AGND = DGND = 0V, TA = 0 to 70°C, MCLK = 12MHz unless otherwise stated.
PARAMETER
SYMBOL
TEST
MIN
CONDITIONS
Overall System Specification (including 12-bit ADC, PGA, Offset and CDS functions)
NO MISSING CODES GUARANTEED
Full-scale transition error
Zero-scale transition error
Differential non-linearity
DNL
References
Upper reference voltage
VRT
AVDD = 5V
3.47
Lower reference voltage
VRB
AVDD = 5V
1.47
DAC reference voltage
VMID
AVDD = 5V
2.47
RLC switching impedance
Reset level clamp options
VRLC
AVDD = 5V
1.46
Voltage set by register
2.46
configuration
3.46
Impedance VRT to VRB
250
Input Multiplexer
CDS mode full scale input range
(VVS-VRS)
Channel to channel gain matching
x denotes the channel selected
Offset DAC (monotonicity guaranteed)
Resolution
8 (+sign)
Zero code voltage
VMID-20
Full scale voltage error
0
Differential non-linearity
DNL
Integral non-linearity
INL
Step size
DACRNG=0
DACRNG=1
Output voltage
DACRNG=0
DACRNG=1
Programmable Gain Amplifier (monotonicity guaranteed)
Resolution
5
Max gain, each channel
Min gain, each channel
Gain error, each channel
GMAX
GMIN
DIGITAL SPECIFICATIONS
Digital Inputs
High level input voltage
VIH
0.8 ∗
DVDD2
Low level input voltage
VIL
High level input current
Low level input current
Input capacitance
Digital Outputs
High level output voltage
Low level output voltage
IIH
IIL
CI
VOH
IOH = 1mA
DVDD2 -
0.5
VOL
IOL = 1mA
High impedance output current
IOZ
TYP
MAX
UNIT
±25
±100
mV
±25
±100
mV
+1.5
LSB
3.5
3.53
V
1.5
1.53
V
2.5
2.53
V
500
Ω
1.5
1.54
V
2.5
2.54
V
3.5
3.54
V
500
750
Ω
2
Vp-p
Gx
1
%
0.1
0.25
4.9
7.4
+/-1.25
+/-1.875
VMID+20
20
0.5
1
bits
mV
mV
LSB
LSB
mV/step
mV/step
V
V
bits
8.25
V/V
0.5
V/V
1
%
V
0.2 ∗
V
DVDD2
1
µA
1
µA
5
pF
V
DGND +
V
0.5
1
µA
WOLFSON MICROELECTRONICS LTD
PP Rev 1.1 January 2000
4
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