WM8148 Wolfson Microelectronics Ltd., WM8148 Datasheet - Page 5

• Manufacturer Part Number: WM8148
• Description: WM8148 : 12-BIT/12 MSPS Ccd/cis Analogue Front End/digitiser
• Manufacturer: Wolfson Microelectronics Ltd.

WM8148
ELECTRICAL CHARACTERISTICS
WOLFSON MICROELECTRONICS LTD
TEST CONDITIONS
AVDD = 4.75 to 5.25V, DVDD1 and DVDD2 = 2.97 to 5.25V, AGND = DGND = 0V, T
otherwise stated (AVDD denotes the voltage applied to all AVDD pins).
PARAMETER
Overall System Performance Including 12-bit ADC, PGA, Offset and CDS Functions
NO MISSING CODES GUARANTEED
Full-scale input voltage range
Zero-scale transition error
Full-scale transition error
Differential non-linearity
Integral non-linearity
ANALOGUE SPECIFICATION
Input Multiplexer
Channel to channel gain matching
Input voltage range
References
Upper reference voltage
Lower reference voltage
Input return bias voltage
Diff. reference voltage (VRT-VRB)
Output resistance VRT, VRB, VRX
Resistance VRT to VRB
VRX Hi-Z leakage current
VRLC/Reset-Level Clamp (RLC)
RLC switching impedance
VRLC Hi-Z leakage current
VRLC DAC resolution
VRLC DAC step
VRLC short-circuit current
VRLC output resistance
Offset DAC
Resolution
Differential non-linearity
Integral non-linearity
Output voltage
Programmable Gain Amplifier. Monotonicity Guaranteed
Resolution
Max gain, each channel
Min gain, each channel
Gain error, each channel
SYMBOL
G
DNL
VRB
VRX
V
VRT
DNL
G
INL
INL
V
RTB
MAX
MIN
IN
VRX buffer disabled
VRLC = 0 to AVDD
VRT, VRB buffers
VRT, VRB, VRX
buffers enabled
VRLC = AVDD
CONDITIONS
VRLC = other
Code 00(hex)
Code FF(hex)
AVDD = 5V
VRLC = 0V
Gain = 1.0
Gain = 1.0
Gain = 1.0
Gain = 1.0
Gain = 1.0
Max Gain
Min Gain
disabled
TEST
-0.25
-0.50
3.00
1.50
1.50
1.30
MIN
500
290
0
4
8
6
A
= 0 to 70 C, MCLK = 48MHz unless
0.413
4.13
0.25
3.30
1.80
1.75
1.50
0.05
0.10
-200
0.74
TYP
800
333
200
3.0
1.0
7.4
20
20
75
80
80
1
2
5
5
2
AVDD
1100
MAX
1.00
3.60
2.10
2.00
1.70
0.25
0.50
370
1
1
5
PD Rev 4.0 April 1999
Production Data
mV/step
UNIT
LSB
LSB
LSB
LSB
V/V
V/V
mV
mV
bits
mA
bits
mV
mV
bits
%
%
V
V
V
V
V
V
V
V
A
A
5