LTC2600IGN Linear Technology, LTC2600IGN Datasheet - Page 13

• Manufacturer Part Number: LTC2600IGN
• Description: IC DAC R-R 16-BIT OCTAL 16-SSOP
• Manufacturer: Linear Technology

Specifications of LTC2600IGN

• Settling Time: 10µs
• Number Of Bits: 16
• Data Interface: Serial
• Number Of Converters: 8
• Voltage Supply Source: Single Supply
• Power Dissipation (max): 20mW
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

OPERATION
INPUT WORD (LTC2600)
INPUT WORD (LTC2610)
INPUT WORD (LTC2620)
32-bit sequence. The 32-bit word is required for daisy-
chain operation, and is also available to accommodate
microprocessors which have a minimum word width of
16 bits (2 bytes).
Daisychain Operation
The serial output of the shift register appears at the SDO
pin. Data transferred to the device from the SDI input is
delayed 32 SCK rising edges before being output at the
next SCK falling edge.
The SDO output can be used to facilitate control of multiple
serial devices from a single 3-wire serial port (i.e., SCK,
SDI and CS/LD). Such a “daisychain” series is confi gured
by connecting SDO of each upstream device to SDI of the
next device in the chain. The shift registers of the devices
C3
C3
C3
COMMAND
COMMAND
COMMAND
C2
C2
C2
C1 C0
C1 C0
C1 C0
A3
A3
A3
ADDRESS
ADDRESS
ADDRESS
A2
A2
A2
A1
A1
A1
A0
A0 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2
A0
MSB
D15
MSB
MSB
D11 D10 D9 D8 D7 D6 D5 D4 D3 D2
D14
D13
D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2
DATA (14 BITS + 2 DON’T-CARE BITS)
DATA (12 BITS + 4 DON’T-CARE BITS)
are thus connected in series, effectively forming a single
input shift register which extends through the entire
chain. Because of this, the devices can be addressed and
controlled individually by simply concatenating their input
words; the fi rst instruction addresses the last device in
the chain and so forth. The SCK and CS/LD signals are
common to all devices in the series.
In use, CS/LD is fi rst taken low. Then the concatenated
input data is transferred to the chain, using SDI of the
fi rst device as the data input. When the data transfer is
complete, CS/LD is taken high, completing the instruction
sequence for all devices simultaneously. A single device
can be controlled by using the no-operation command
(1111) for the other devices in the chain.
LTC2600/LTC2610/LTC2620
DATA (16 BITS)
D1 D0
LSB
D1 D0
X
LSB
X
D1 D0
X
X
2600 TBL01
2600 TBL02
2600 TBL03
LSB
X
X
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