參數(shù)資料
型號(hào): TLV5608IDWR
廠商: TEXAS INSTRUMENTS INC
元件分類: DAC
英文描述: SERIAL INPUT LOADING, 3 us SETTLING TIME, 8-BIT DAC, PDSO20
封裝: GREEN, PLASTIC, SOIC-20
文件頁(yè)數(shù): 5/21頁(yè)
文件大?。?/td> 501K
代理商: TLV5608IDWR
DAC A-H AND TWO-CHANNEL REGISTERS
PRESET
CTRL0
CTRL1
REFERENCE
BUFFERED AMPLIFIER
www.ti.com.................................................................................................................................................... SLAS268G – MAY 2000 – REVISED NOVEMBER 2008
Writing to DAC A-H sets the output voltage of channel A-H. It is possible to automatically generate the
complement of one channel by writing to one of the four two-channel registers (DAC A and B etc.).
The TLV5610 decodes all 12 data bits. The TLV5608 decodes D11 to D2 (D1 and D0 are ignored). The TLV5629
decodes D11 to D4 (D3 to D0 are ignored).
The outputs of the DAC channels can be driven simultaneously to a predefined value stored in the preset register
by driving the PRE input pin low and asserting the LDAC input pin. The preset register is cleared (set to zero) by
the POR circuit after power up. Therefore, it must be written with a predefined value before asserting the PRE
pin low, unless zero is the desired preset value. The PRE input is asynchronous to the clock.
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
X
PD
DO
X
IM
PD
: Full device power down
0 = normal
1 = power down
DO
: Digital output enable
0 = disable
1 = enable
IM
: Input mode
0 = straight binary
1 = twos complement
X
: Reserved
If DOUT is enabled, the data input on DIN is output on DOUT with a 16-cycle delay. That makes it possible to
daisy-chain multiple DACs on one serial bus.
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
X
PGH
PEF
PCD
PAB
SGH
SEF
SCD
SAB
PXY
: Power down DACXY
0 = normal
1 = power down
SXY
: Speed DACXY
0 = slow
1 = fast
XY
: DAC pair AB, CD, EF, or GH
In power-down mode, the amplifiers of the selected DAC pair within the device are disabled and the total power
consumption of the device is significantly reduced. Power-down mode of a specific DAC pair can be selected by
setting the PXY bit within the data word to 1.
There are two settling time modes: fast and slow. Fast mode of a DAC pair is selected by setting SXY to 1 and
slow mode is selected by setting SXY to 0.
The DAC reference can be sourced externally using precision reference circuits. Since the reference input is
buffered, it can be connected to the supply voltage.
The DAC outputs are buffered by an amplifier with a gain of two, which are configurable as Class A (fast mode)
or Class AB (slow or low-power mode). The output buffers have near rail-to-rail output with short-circuit
protection, and can reliably drive a 2-k
load with a 100-pF load capacitance.
Copyright 2000–2008, Texas Instruments Incorporated
13
Product Folder Link(s): TLV5608 TLV5610 TLV5629
相關(guān)PDF資料
PDF描述
TLV5608IDWG4 SERIAL INPUT LOADING, 3 us SETTLING TIME, 8-BIT DAC, PDSO20
TLV5608IPWRG4 SERIAL INPUT LOADING, 3 us SETTLING TIME, 8-BIT DAC, PDSO20
TLV5608IPW SERIAL INPUT LOADING, 3 us SETTLING TIME, 8-BIT DAC, PDSO20
TLV5610IDWRG4 SERIAL INPUT LOADING, 3 us SETTLING TIME, 12-BIT DAC, PDSO20
TLV5629IPW SERIAL INPUT LOADING, 3 us SETTLING TIME, 8-BIT DAC, PDSO20
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