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參數資料
型號： TPS65950ZXNR
廠商： TEXAS INSTRUMENTS INC
元件分類： 消費家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PBGA209
封裝： 7 X 7 MM, 0.40 MM PITCH, PLASTIC, BGA-209
文件頁數： 32/167頁
文件大小： 2566K
代理商： TPS65950ZXNR
9
MADC
9.1
General Description
9.2
Main Electrical Characteristics
9.3
Channel Voltage Input Range
TPS65950
Integrated Power Management/Audio Codec
www.ti.com
SWCS032 – OCTOBER 2008
The TPS65950 shares the MADC resource with the host processors in the system (hardware and
software conversion modes) and its BCI. Therefore, the TPS65950 must:
Manage potential concurrent requests of conversions and priority among resource users
Flag, using interrupt signals, the end-of-sequence of conversions
Grant quarter-bit accuracy for modem conversion of battery voltage
The quarter-bit accurate start signal is provided through a STARTADC from the host processor (real-time
conversion).
The MADC generates interrupt signals to the host processors. Interrupts are handled primarily by the
MADC internal secondary interrupt handler (SIH) and secondly at the upper level (outside the MADC) by
the TPS65950 primary interrupt handler (PIH). The MADC indicates to the BCI module, through a data
ready signal, that conversion results are available.
Table 9-1 lists the electrical characteristics of the MADC.
Table 9-1. Electrical Characteristics
Parameter
Conditions
Min(1)
Typ(2)
Max(3)
Unit
Resolution
10
Bit
Input dynamic range for external input
Except ADIN0 and ADIN1 and internal MADC
0
2.5
V
input (0 to 1.5 V)
MADC voltage reference
1.5
V
Differential nonlinearity
For all channels (except ADIN2 through ADIN7
–1
1
LSB
channels)
Integral nonlinearity
Best fitting. For all channels (except ADIN2
–2
2
LSB
through ADIN7)
Differential nonlinearity for ADIN2 through
–1
1
LSB
ADIN7
Best fitting for codes 230 to maximum
–2
2
LSB
Integral nonlinearity for ADIN2 through
Best fitting considering offset of 25
–3.75
3.75
LSB
ADIN7
least-significant bits (LSBs)
Offset
Best fitting
–28.5
28.5
mV
Input bias
1
A
Input capacitor CBANK
10
pF
Maximum source input resistance Rs (for
100
k
all 16 internal or external inputs)
Input current leakage (for all 16 internal or
1
A
external inputs)
(1)
Min = Minimum value
(2)
Typ = Typical value
(3)
Max = Maximum value
Table 9-2 lists the channel voltage input ranges.
MADC
127
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