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PDF WM2616 Data sheet ( Hoja de datos )

Número de pieza WM2616
Descripción 12-bit Serial Input Voltage Output DAC
Fabricantes Wolfson Microelectronics plc 
Logotipo Wolfson Microelectronics plc Logotipo



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No Preview Available ! WM2616 Hoja de datos, Descripción, Manual

WM2616
12-bit Serial Input Voltage Output DAC
Production Data June 1999, Rev1.0
FEATURES
12-bit voltage output DAC
Single supply from 2.7V to 5.5V
DNL ±0.5 LSB, INL ±1.9 LSB
Very low power consumption (3V supply):
- 900µW, slow mode
- 2.1mW, fast mode
TMS320, (Q)SPI, and Microwirecompatible serial
interface
Programmable settling time of 4µs or 12µs typical
High impedance reference input buffer
APPLICATIONS
Battery powered test instruments
Digital offset and gain adjustment
Battery operated/remote industrial controls
Machine and motion control devices
Wireless telephone and communication systems
Speech synthesis
Arbitrary waveform generation
ORDERING INFORMATION
DEVICE
TEMP. RANGE
PACKAGE
WM2616CD
WM2616ID
0° to 70°C
-40° to 85°C
BLOCK DIAGRAM
8-pin SOIC
8-pin SOIC
REFIN(6)
DIN (1)
SCLK (2)
NCS (3)
FS (4)
16-BIT
SHIFT
REGISTER
AND
CONTROL
LOGIC
data
REFERENCE
INPUT BUFFER
X1
12-BIT
DAC
LATCH
VDD
(8)
DAC
OUTPUT
BUFFER
X2
(7) OUT
POWER-ON
RESET
(5)
AGND
2-BIT
CONTROL
LATCH
POWERDOWN/
SPEED
CONTROL
WM2616
DESCRIPTION
The WM2616 is a 12-bit voltage output, resistor string digital-to-
analogue converter that can be powered down under software
control. Power down reduces current consumption to 10nA.
The device has been designed to interface efficiently to industry
standard microprocessors and DSPs, including the TMS320
family. The WM2616 is programmed with a 16-bit serial word
comprising 4 control bits and 12 data bits.
Excellent performance is delivered with a typical DNL of 0.5LSBs.
The settling time of the DAC is programmable to allow the designer
to optimize speed versus power dissipation. The output stage is
buffered by a x2 gain rail-to-rail amplifier, which features a Class
AB output stage.
The device is available in an 8-pin SOIC package. Commercial
temperature (0° to 70°C) and Industrial temperature (-40° to 85°C)
variants are supported.
TYPICAL PERFORMANCE
1
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1
0
AVDD = DVDD = 5V, VREF = 2.048V, Speed = Fast mode, Load = 10k/100pF
512
1024
1536
2048
2559
DIGITAL CODE
3071
3583
4095
WOLFSON MICROELECTRONICS LTD
Lutton Court, Bernard Terrace, Edinburgh, EH8 9NX, UK
Tel: +44 (0) 131 667 9386
Fax: +44 (0) 131 667 5176
http://www.wolfson.co.uk
Production Data Datasheets contain final
specifications current on publication date.
Supply of products conforms to Wolfson
Microelectronics’ Terms and conditions.
2616 master.doc June 17, 1999 14:13
©1999 Wolfson Microelectronics Ltd.

1 page




WM2616 pdf
Production Data Rev 1.0
SERIAL INTERFACE
tWL tWH
SCLK
1
tSUD
tHD
DIN
D15
tSUCSFS
NCS
tWHFS
tSUFS
2
D14
3
D13
FS
WM2616
4
5 15
16
D12
D1 D0
tSUC16CS
tSUC16FS
Figure 1 Timing Diagram
Test Conditions:
RL = 10k, CL = 100pF. VDD = 5V ± 10%, VREF = 2.048V and VDD = 3V ± 10%, VREF = 1.024V over recommended operating free-air
temperature range (unless noted otherwise).
SYMBOL
tSUCSFS
tSUFS
tSUC16FS
tSUC16CS
tWH
tWL
tSUD
tHD
tWHFS
TEST CONDITIONS
Setup time NCS low before negative FS edge.
Setup time FS low before first negative SCLK edge.
Setup time, sixteenth negative SCLK edge after FS low
on which D0 is sampled before rising edge of FS.
Setup time, sixteenth positive SCLK edge (first positive
after D0 sampled) before NCS rising edge. If FS is used
instead of the sixteenth positive edge to update the DAC,
then the setup time is between the FS rising edge and
the NCS rising edge.
Pulse duration, SCLK high.
Pulse duration, SCLK low.
Setup time, data ready before SCLK falling edge.
Hold time, data held valid after SCLK falling edge.
Pulse duration, FS high.
MIN
10
8
10
10
25
25
8
5
20
TYP
MAX
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
WOLFSON MICROELECTRONICS LTD
Production Data Rev 1.0 June 1999
5

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