232 mW @ 125 MSPS
Sleep mode: <3 mW @ 3.3 V
Supply voltage: 1.8 V to 3.3 V
SFDR to Nyquist
86 dBc @ 1 MHz output
85 dBc @ 10 MHz output
AD9117 NSD @ 1 MHz output, 125 MSPS, 20 mA: −162 dBc/Hz
Differential current outputs: 4 mA to 20 mA
2 on-chip auxiliary DACs
CMOS inputs with single-port operation
Output common mode: adjustable 0 V to 1.2 V
Small footprint 40-lead LFCSP RoHS-compliant package
APPLICATIONS
Wireless infrastructures
Picocell, femtocell base stations
Medical instrumentation
The AD9114/AD9115/AD9116/AD9117 are pin-compatible
dual, 8-/10-/12-/14-bit, low power digital-to-analog converters
(DACs) that provide a sample rate of 125 MSPS. These TxDAC®
converters are optimized for the transmit signal path of communication systems. All the devices share the same interface, package,
and pinout, providing an upward or downward component
selection path based on performance, resolution, and cost.
The AD9114/AD9115/AD9116/AD9117 offer exceptional ac and
dc performance and support update rates up to 125 MSPS.
The flexible power supply operating range of 1.8 V to 3.3 V and
low power dissipation of the AD9114/AD9115/AD9116/AD9117
make them well suited for portable and low power applications.
PRODUCT HIGHLIGHTS
1. Low Power. DACs operate on a single 1.8 V to 3.3 V supply;
total power consumption reduces to 225 mW at 100 MSPS.
Sleep and power-down modes are provided for low power
idle periods.
2. CMOS Clock Input. High speed, single-ended CMOS clock
input supports a 125 MSPS conversion rate.
3. Easy Interfacing to Other Components. Adjustable output
common mode from 0 V to 1.2 V allows for easy interfacing
to other components that accept common-mode levels
greater than 0 V.
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
= 8 mA, maximum sample rate, unless otherwise noted.
xOUTFS
AD9114 AD9115 AD9116 AD9117
Unit Min Typ Max Min Typ Max Min Typ Max Min Typ Max
Rev. A | Page 8 of 80
AD9114/AD9115/AD9116/AD9117
ABSOLUTE MAXIMUM RATINGS
Table 5.
Parameter Rating
AVDD, DVDDIO, CVDD to AVSS,
−0.3 V to +3.9 V
DVSS, CVSS
DVDD to DVSS −0.3 V to +2.1 V
AVSS to DVSS, CVSS −0.3 V to +0.3 V
DVSS to AVSS, CVSS −0.3 V to +0.3 V
CVSS to AVSS, DVSS −0.3 V to +0.3 V
REFIO, FSADJQ, FSADJI, CMLQ,
−0.3 V to AVDD + 0.3 V
CMLI to AVSS
QOUTP, QOUTN, IOUTP, IOUTN,
−1.0 V to AVDD + 0.3 V
RLQP, RLQN, RLIP, RLIN to AVSS
DBn1 (MSB) to D0 (LSB), CS, SCLK,
−0.3 V to DVDDIO + 0.3 V
SDIO, RESET to DVSS
CLKIN to CVSS −0.3 V to CVDD + 0.3 V
Junction Temperature 125°C
Storage Temperature Range −65°C to +150°C
1
n stands for 7 for the AD9114, 9 for the AD9115, 11 for the AD9116, and 13
for the AD9117.
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
THERMAL RESISTANCE
Table 6.
Package Type θJA θ
40-Lead LFCSP (with No Airflow
29.8
Movement)
1
These calculations are intended to represent the thermal performance of the
indicated packages using a JEDEC multilayer test board. Do not assume the
same level of thermal performance in actual applications without a careful
inspection of the conditions in the application to determine that they are
similar to those assumed in these calculations.
2. THE EXPO SED PAD IS CONNECTED TO AVSS AND
MUST BE SOL DERED TO THE GROUND PLANE.
EXPOSED METAL AT PACKAGE CO RNERS IS
CONNECTED TO THIS PAD.
AD9114
TOP VIEW
(Not to Scale)
11
12
13
14
C
NC
NC
NC
N
Figure 2. AD9114 Pin Configuration
CMLI
FSADJI/AUXI
REFIO
RESET/PINMD
SCLK/CLKMD
FSADJQ/AU
31
32
33
34
35
36
30
RLIN
29
IOUTN
28
IOUTP
27
RLIP
26
AVD D
25
AVS S
24
RLQP
23
QOUTP
22
QOUTN
21
RLQN
15
17
16
18
19
20
NC
CVSS
CVDD
CMLQ
CLKIN
DCLKIO
07466-005
Table 7. AD9114 Pin Function Descriptions
Pin No. Mnemonic Description
1 to 4 DB[5:2] Digital Inputs.
5 DVDDIO Digital I/O Supply Voltage Input (1.8 V to 3.3 V Nominal).
6 DVSS Digital Common.
7 DVDD
Digital Core Supply Voltage Output (1.8 V). Strap DVDD to DVDDIO at 1.8 V. If DVDDIO > 1.8 V, bypass DVDD
with a 1.0 μF capacitor; however, do not otherwise connect it. The LDO should not drive external loads.
8 DB1 Digital Inputs
9 DB0 (LSB) Digital Input (LSB).
10 to
NC No Connect. These pins are not connected to the chip.
15
16 DCLKIO Data Input/Output Clock. Clock used to qualify input data.
17 CVDD Sampling Clock Supply Voltage Input (1.8 V to 3.3 V). CVDD must be ≥ DVDD.
18 CLKIN LVCMOS Sampling Clock Input.
19 CVSS Sampling Clock Supply Voltage Common.
20 CMLQ
Q DAC Output Common-Mode Level. When the internal on-chip (QR
the on-chip QR
resistor. It is recommended to leave this pin unconnected. When the internal on-chip (QR
CML
) is enabled, this pin is connected to
CML
disabled, this pin is the common-mode load for Q DAC and must be connected to AVSS through a resistor, see
the Using the Internal Termination Resistors section. Recommended value for this external resistor is 0 Ω.
21 RLQN
Load Resistor (62.5 Ω) to the CMLQ Pin. For the internal load resistor to be used, this pin should be tied to
QOUTN externally.
22 QOUTN Complementary Q DAC Current Output. Full-scale current is sourced when all data bits are 0s.
23 QOUTP Q DAC Current Output. Full-scale current is sourced when all data bits are 1s.
24 RLQP
Load Resistor (62.5 Ω) to the CMLQ Pin. For the internal load resistor to be used, this pin should be tied to
QOUTP externally.
25 AVSS Analog Common.
26 AVDD Analog Supply Voltage Input (1.8 V to 3.3 V).
27 RLIP
Load Resistor (62.5 Ω) to the CMLI Pin. For the internal load resistor to be used, this pin should be tied to
IOUTP externally.
28 IOUTP I DAC Current Output. Full-scale current is sourced when all data bits are 1s.
CML
) is
Rev. A | Page 10 of 80
AD9114/AD9115/AD9116/AD9117
Pin No. Mnemonic Description
29 IOUTN Complementary I DAC Current Output. Full-scale current is sourced when all data bits are 0s.
30 RLIN
31 CMLI
32 FSADJQ/AUXQ
Auxiliary Q DAC Output (AUXQ). When the internal on-chip (QR
33 FSADJI/AUXI
Auxiliary I DAC Output (AUXI). When the internal on-chip (IR
34 REFIO
35 RESET/PINMD
A logic high (pull-up to DVDDIO) puts the device into pin mode (PINMD).
36 SCLK/CLKMD Clock Input for Serial Port (SCLK). In SPI mode, this pin is the clock input for the serial port.
37 SDIO/FORMAT Serial Port Input/Output (SDIO). In SPI mode, this pin is the bidirectional data line for the serial port.
38
/PWRDN Active Low Chip Select (CS). In SPI mode, this pin serves as the active low chip select.
CS
39 DB7 (MSB) Digital Input (MSB).
40 DB6 Digital Input.
EP (EPAD)
Load Resistor (62.5 Ω) to the CMLI Pin. For the internal load resistor to be used, this pin should be tied to
IOUTN externally.
I DAC Output Common-Mode Level. When the internal on-chip (IR
on-chip IR
resistor. It is recommended to leave this pin unconnected. When the internal on-chip (IR
CML
) is enabled, this pin is connected to the
CML
CML
) is
disabled, this pin is the common-mode load for I DAC and must be connected to AVSS through a resistor, see
the Using the Internal Termination Resistors section. Recommended value for this external resistor is 0 Ω.
Full-Scale Current Output Adjust (FSADJQ). When the internal on chip (QR
) is disabled, this pin is the full-scale
SET
current output adjust for Q DAC and must be connected to AVSS through a resistor, see the Theory of Operation
section. Nominal value for this external resistor is 4 kΩ for 8 mA output current.
) is enabled, this pin is the auxiliary Q DAC output.
SET
Full-Scale Current Output Adjust (FSADJI). When the internal on-chip (IR
) is disabled, this pin is the full-scale
SET
current output adjust for I DAC and must be connected to AVSS through a resistor, see the Theory of Operation
section. Nominal value for this external resistor is 4 kΩ for 8 mA output current.
) is enabled, it is the auxiliary I DAC output.
SET
Reference Input/Output. Serves as a reference input when the internal reference is disabled. Provides a 1.0 V
reference output when in internal reference mode (a 0.1 μF capacitor to AVSS is required).
This pin defines the operation mode of the part. A logic low (pull-down to DVSS) sets the part in SPI mode.
Pulse RESET high to reset the SPI registers to their default values.
Clock Mode (CLKMD). In pin mode, CLKMD determines the phase of the internal retiming clock. When
DCLKIO = CLKIN, tie it to 0. When DCLKIO ≠ CLKIN, pulse 0 to 1 to edge trigger the internal retimer, see
the Retimer section.
Format Pin (FORMAT). In pin mode, FORMAT determines the data format of digital data. A logic low (pull-down
to DVSS) selects the binary input data format. A logic high (pull-up to DVDDIO) selects the twos complement
input data format.
Power-Down (PWRDN). In pin mode, a logic high (pull-up to DVDDIO) powers down the device, except for
the SPI port.
The exposed pad is connected to AVSS and must be soldered to the ground plane. Exposed metal at the
package corners is connected to this pad.
Rev. A | Page 11 of 80
AD9114/AD9115/AD9116/AD9117
Q
2
LKMD
ORMAT
RDN
CS/PW
DB9 (MSB)
DB8
38
39
40
PIN 1
1DB7
INDICATOR
2DB6
3DB5
4DB4
5DVDDIO
6DVSS
7DVDD
8DB3
9DB2
10DB1
NOTES
1. NC = NO CONNECT
. THE EXPO SED PAD IS CONNECT ED TO AVSS AND
MUST BE SOLDERED TO THE GROUND PLANE.
EXPOSED METAL AT PACKAGE CO RNERS IS
CONNECTED TO THIS PAD.
1 to 4 DB[7:4] Digital Inputs.
5 DVDDIO Digital I/O Supply Voltage Input (1.8 V to 3.3 V Nominal).
6 DVSS Digital Common.
7 DVDD
Digital Core Supply Voltage Output (1.8 V). Strap DVDD to DVDDIO at 1.8 V. If DVDDIO > 1.8 V, bypass DVDD
with a 1.0 μF capacitor; however, do not otherwise connect it. The LDO should not drive external loads.
8 to 10 DB[3:1] Digital Inputs.
11 DB0 (LSB) Digital Input (LSB).
12 to 15 NC No Connect. These pins are not connected to the chip.
16 DCLKIO Data Input/Output Clock. Clock used to qualify input data.
17 CVDD Sampling Clock Supply Voltage Input (1.8 V to 3.3 V). CVDD must be ≥ DVDD.
18 CLKIN LVCMOS Sampling Clock Input.
19 CVSS Sampling Clock Supply Voltage Common.
20 CMLQ
Q DAC Output Common-Mode Level. When the internal on-chip (QR
the on-chip QR
resistor. It is recommended to leave this pin unconnected. When the internal on-chip (QR
CML
) is enabled, this pin is connected to
CML
disabled, this pin is the common-mode load for Q DAC and must be connected to AVSS through a resistor, see
the Using the Internal Termination Resistors section. Recommended value for this external resistor is 0 Ω.
21 RLQN
Load Resistor (62.5 Ω) to the CMLQ Pin. For the internal load resistor to be used, this pin should be tied to
QOUTN externally.
22 QOUTN Complementary Q DAC Current Output. Full-scale current is sourced when all data bits are 0s.
23 QOUTP Q DAC Current Output. Full-scale current is sourced when all data bits are 1s.
24 RLQP
Load Resistor (62.5 Ω) to the CMLQ Pin. For the internal load resistor to be used, this pin should be tied to
QOUTP externally.
25 AVSS Analog Common.
26 AVDD Analog Supply Voltage Input (1.8 V to 3.3 V).
27 RLIP
Load Resistor (62.5 Ω) to the CMLI Pin. For the internal load resistor to be used, this pin should be tied to
IOUTP externally.
28 IOUTP I DAC Current Output. Full-scale current is sourced when all data bits are 1s.
29 IOUTN Complementary I DAC Current Output. Full-scale current is sourced when all data bits are 0s.
30 RLIN
Load Resistor (62.5 Ω) to the CMLI Pin. For the internal load resistor to be used, this pin should be tied to
IOUTN externally.
CML
) is
Rev. A | Page 12 of 80
AD9114/AD9115/AD9116/AD9117
Pin No. Mnemonic Description
31 CMLI
I DAC Output Common-Mode Level. When the internal on-chip (IR
on-chip IR
resistor. It is recommended to leave this pin unconnected. When the internal on-chip (IR
CML
disabled, this pin is the common-mode load for I DAC and must be connected to AVSS through a resistor,
see the Using the Internal Termination Resistors section. Recommended value for this external resistor is 0 Ω.
32 FSADJQ/AUXQ
Full-Scale Current Output Adjust (FSADJQ). When the internal on chip (QR
scale current output adjust for Q DAC and must be connected to AVSS through a resistor, see the Theory of
Operation section. Nominal value for this external resistor is 4 kΩ for 8 mA output current.
Auxiliary Q DAC Output (AUXQ). When the internal on-chip (QR
33 FSADJI/AUXI
Full-Scale Current Output Adjust (FSADJI). When the internal on-chip (IR
SET
current output adjust for I DAC and must be connected to AVSS through a resistor, see the Theory of Operation
section. Nominal value for this external resistor is 4 kΩ for 8 mA output current.
Auxiliary I DAC Output (AUXI). When the internal on-chip (IR
34 REFIO
Reference Input/Output. Serves as a reference input when the internal reference is disabled. Provides a 1.0 V
SET
reference output when in internal reference mode (a 0.1 μF capacitor to AVSS is required).
35 RESET/PINMD
This pin defines the operation mode of the part. A logic low (pull-down to DVSS) sets the part in SPI mode.
Pulse RESET high to reset the SPI registers to their default values.
A logic high (pull-up to DVDDIO) puts the device into pin mode (PINMD).
36 SCLK/CLKMD Clock Input for Serial Port (SCLK). In SPI mode, this pin is the clock input for the serial port.
Clock Mode (CLKMD). In pin mode, CLKMD determines the phase of the internal retiming clock. When
DCLKIO = CLKIN, tie it to 0. When DCLKIO ≠ CLKIN, pulse 0 to 1 to edge trigger the internal retime, see
the Retimer section.
37 SDIO/FORMAT Serial Port Input/Output (SDIO). In SPI mode, this pin is the bidirectional data line for the serial port.
Format Pin (FORMAT). In pin mode, FORMAT determines the data format of digital data. A logic low (pull-down
to DVSS) selects the binary input data format. A logic high (pull-up to DVDDIO) selects the twos complement
input data format.
38
/PWRDN Active Low Chip Select (CS). In SPI mode, this pin serves as the active low chip select.
CS
Power-Down (PWRDN). In pin mode, a logic high (pull-up to DVDDIO) powers down the device, except for the
SPI port.
39 DB9 (MSB) Digital Input (MSB).
40 DB82 Digital Input.
EP (EPAD)
The exposed pad is connected to AVSS and must be soldered to the ground plane. Exposed metal at the
package corners is connected to this pad.
) is enabled, this pin is connected to the
CML
) is disabled, this pin is the full-
SET
CML
) is
) is enabled, this pin is the auxiliary Q DAC output.
) is disabled, this pin is the full-scale
SET
) is enabled, it is the auxiliary I DAC output.
Rev. A | Page 13 of 80
AD9114/AD9115/AD9116/AD9117
Q
2
NMD
LKMD
RDN
/C
CMLI
FSADJI/AUXI
REFIO
RESET/PI
SCLK
SDIO/FORMAT
CS/PW
DB11 (MSB)
DB10
38
39
40
PIN 1
1DB9
INDICATOR
2DB8
3DB7
4DB6
5DVDDIO
6DVSS
7DVDD
8DB5
9DB4
10DB3
NOTES
1. NC = NO CONNECT
. THE EXPOSED PAD IS CONNECTED TO AVSS AND
MUST BE SOL DERED TO THE GROUND PLANE.
EXPOSED METAL AT PACKAGE CORNERS IS
CONNECTED TO THIS PAD.
AD9116
TOP VIEW
(Not to Scale)
11
12
13
DB2
DB1
DB0 (LSB)
Figure 4. AD9116 Pin Configuration
FSADJQ/AUX
31
32
33
34
35
36
37
30 RLI N
29 IOUTN
28 IOUTP
27 RLI P
26 AVDD
25 AVSS
24 RLQ P
23 QOUTP
22 QOUTN
21 RLQ N
15
17
16
18
19
14
NC
20
S
NC
CVS
CVDD
CMLQ
CLKIN
CLKIO
D
07466-003
Table 9. AD9116 Pin Function Descriptions
Pin No. Mnemonic Description
1 to 4 DB[9:6] Digital Inputs.
5 DVDDIO Digital I/O Supply Voltage Input (1.8 V to 3.3 V Nominal).
6 DVSS Digital Common.
7 DVDD
Digital Core Supply Voltage Output (1.8 V). Strap DVDD to DVDDIO at 1.8 V. If DVDDIO > 1.8 V, bypass DVDD
with a 1.0 μF capacitor; however, do not otherwise connect it. The LDO should not drive external loads.
8 to 12 DB[5:1] Digital Inputs.
13 DB0 (LSB) Digital Input (LSB).
14, 15 NC No Connect. These pins are not connected to the chip.
16 DCLKIO Data Input/Output Clock. Clock used to qualify input data.
17 CVDD Sampling Clock Supply Voltage Input (1.8 V to 3.3 V ). CVDD must be ≥ DVDD.
18 CLKIN LVCMOS Sampling Clock Input.
19 CVSS Sampling Clock Supply Voltage Common.
20 CMLQ
Q DAC Output Common-Mode Level. When the internal on-chip (QR
the on-chip QR
resistor. It is recommended to leave this pin unconnected. When the internal on-chip (QR
CML
) is enabled, this pin is connected to
CML
disabled, this pin is the common-mode load for Q DAC and must be connected to AVSS through a resistor,
see the Using the Internal Termination Resistors section. Recommended value for this external resistor is 0 Ω.
21 RLQN
Load Resistor (62.5 Ω) to the CMLQ Pin. For the internal load resistor to be used, this pin should be tied to
QOUTN externally.
22 QOUTN Complementary Q DAC Current Output. Full-scale current is sourced when all data bits are 0s.
23 QOUTP Q DAC Current Output. Full-scale current is sourced when all data bits are 1s.
24 RLQP
Load Resistor (62.5 Ω) to the CMLQ Pin. For the internal load resistor to be used, this pin should be tied to
QOUTP externally.
25 AVSS Analog Common.
26 AVDD Analog Supply Voltage Input (1.8 V to 3.3 V).
27 RLIP
Load Resistor (62.5 Ω) to the CMLI Pin. For the internal load resistor to be used, this pin should be tied to
IOUTP externally.
28 IOUTP I DAC Current Output. Full-scale current is sourced when all data bits are 1s.
29 IOUTN Complementary I DAC Current Output. Full-scale current is sourced when all data bits are 0s.
30 RLIN
Load Resistor (62.5 Ω) to the CMLI Pin. For the internal load resistor to be used, this pin should be tied to
IOUTN externally.
CML
) is
Rev. A | Page 14 of 80
AD9114/AD9115/AD9116/AD9117
Pin No. Mnemonic Description
31 CMLI
I DAC Output Common-Mode Level. When the internal on-chip (IR
on-chip IR
resistor. It is recommended to leave this pin unconnected. When the internal on-chip (IR
CML
disabled, this pin is the common mode load for I DAC and must be connected to AVSS through a resistor, see
the Using the Internal Termination Resistors section. Recommended value for this external resistor is 0 Ω.
32 FSADJQ/AUXQ
Full-Scale Current Output Adjust (FSADJQ). When the internal on chip (QR
scale current output adjust for Q DAC and must be connected to AVSS through a resistor, see the Theory of
Operation section. Nominal value for this external resistor is 4 kΩ for 8 mA output current.
Auxiliary Q DAC Output (AUXQ). When the internal on-chip (QR
33 FSADJI/AUXI
Full-Scale Current Output Adjust (FSADJI). When the internal on-chip (IR
SET
current output adjust for I DAC and must be connected to AVSS through a resistor, see the Theory of Operation
section. Nominal value for this external resistor is 4 kΩ for 8 mA output current.
Auxiliary I DAC Output (AUXI). When the internal on-chip (IR
34 REFIO
Reference Input/Output. Serves as a reference input when the internal reference is disabled. Provides a 1.0 V
SET
reference output when in internal reference mode (a 0.1 μF capacitor to AVSS is required).
35 RESET/PINMD
This pin defines the operation mode of the part. A logic low (pull-down to DVSS) sets the part in SPI mode.
Pulse RESET high to reset the SPI registers to their default values.
A logic high (pull-up to DVDDIO) puts the device into pin mode (PINMD).
36 SCLK/CLKMD Clock Input for Serial Port (SCLK). In SPI mode, this pin is the clock input for the serial port.
Clock Mode (CLKMD). In pin mode, CLKMD determines the phase of the internal retiming clock. When
DCLKIO = CLKIN, tie it to 0. When DCLKIO ≠ CLKIN, pulse 0 to 1 to edge trigger the internal retime, see
the Retimer section.
37 SDIO/FORMAT Serial Port Input/Output (SDIO). In SPI mode, this pin is the bidirectional data line for the serial port.
Format Pin (FORMAT). In pin mode, FORMAT determines the data format of digital data. A logic low
(pull-down to DVSS) selects the binary input data format. A logic high (pull-up to DVDDIO) selects the
twos complement input data format.
38
/PWRDN Active Low Chip Select (CS). In SPI mode, this pin serves as the active low chip select.
CS
Power-Down (PWRDN). In pin mode, a logic high (pull-up to DVDDIO) powers down the device, except for
the SPI port.
39 DB11 (MSB) Digital Input (MSB).
40 DB10 Digital Input.
EP (EPAD)
The exposed pad is connected to AVSS and must be soldered to the ground plane. Exposed metal at the
package corners is connected to this pad.
) is enabled, this pin is connected to the
CML
) is disabled, this pin is the full-
SET
CML
) is
) is enabled, this pin is the auxiliary Q DAC output.
) is disabled, this pin is the full-scale
SET
) is enabled, it is the auxiliary I DAC output.
Rev. A | Page 15 of 80
AD9114/AD9115/AD9116/AD9117
Q
ORMAT
RDN
B13 (MSB)
B12
CS/PW
D
D
38
39
40
PIN 1
1DB11
INDICATOR
2DB10
3DB9
4DB8
5DVDDIO
6DVSS
7DVDD
8DB7
9DB6
10DB5
NOTES
1. THE EXPO SED PAD IS CONNECTED TO AVSS AND
MUST BE SOL DERED TO THE G ROUND PLANE.
EXPOSED METAL AT PACKAGE CO RNERS IS
CONNECTED TO THIS PAD.
AD9117
TOP VIEW
(Not to Scale)
11
12
13
DB4
DB3
DB2
Figure 5. AD9117 Pin Configuration
Table 10. AD9117 Pin Function Descriptions
Pin No. Mnemonic Description
1 to 4 DB[11:8] Digital Inputs.
5 DVDDIO Digital I/O Supply Voltage Input (1.8 V to 3.3 V Nominal).
6 DVSS Digital Common.
7 DVDD
Digital Core Supply Voltage Output (1.8 V). Strap DVDD to DVDDIO at 1.8 V. If DVDDIO > 1.8 V, bypass DVDD
with a 1.0 μF capacitor; however, do not otherwise connect it. The LDO should not drive external loads.
8 to 14 DB[7:1] Digital Inputs.
15 DB0 (LSB) Digital Input (LSB).
16 DCLKIO Data Input/Output Clock. Clock used to qualify input data.
17 CVDD Sampling Clock Supply Voltage Input (1.8 V to 3.3 V). CVDD must be ≥ DVDD.
18 CLKIN LVCMOS Sampling Clock Input.
19 CVSS Sampling Clock Supply Voltage Common.
20 CMLQ
Q DAC Output Common-Mode Level. When the internal on-chip (QR
the on-chip QR
resistor. It is recommended to leave this pin unconnected. When the internal on-chip (QR
CML
disabled, this pin is the common-mode load for Q DAC and must be connected to AVSS through a resistor,
see the Using the Internal Termination Resistors section. Recommended value for this external resistor is 0 Ω.
21 RLQN
Load Resistor (62.5 Ω) to the CMLQ Pin. For the internal load resistor to be used, this pin should be tied to
QOUTN externally.
22 QOUTN Complementary Q DAC Current Output. Full-scale current is sourced when all data bits are 0s.
23 QOUTP Q DAC Current Output. Full-scale current is sourced when all data bits are 1s.
24 RLQP
Load Resistor (62.5 Ω) to the CMLQ Pin. For the internal load resistor to be used, this pin should be tied to
QOUTP externally.
25 AVSS Analog Common.
26 AVDD Analog Supply Voltage Input (1.8 V to 3.3 V).
27 RLIP
Load Resistor (62.5 Ω) to the CMLI Pin. For the internal load resistor to be used, this pin should be tied to
IOUTP externally.
28 IOUTP I DAC Current Output. Full-scale current is sourced when all data bits are 1s.
29 IOUTN Complementary I DAC Current Output. Full-scale current is sourced when all data bits are 0s.
30 RLIN
Load Resistor (62.5 Ω) to the CMLI Pin. For the internal load resistor to be used, this pin should be tied to
I DAC Output Common-Mode Level. When the internal on-chip (IR
the on-chip IR
resistor. It is recommended to leave this pin unconnected. When the internal on-chip (IR
CML
is disabled, this pin is the common-mode load for I DAC and must be connected to AVSS through a resistor,
see the Using the Internal Termination Resistors section. Recommended value for this external resistor is 0 Ω.
32 FSADJQ/AUXQ
Full-Scale Current Output Adjust (FSADJQ). When the internal on chip (QR
scale current output adjust for Q DAC and must be connected to AVSS through a resistor, see the Theory of
Operation section. Nominal value for this external resistor is 4 kΩ for 8 mA output current.
Auxiliary Q DAC Output (AUXQ). When the internal on-chip (QR
33 FSADJI/AUXI
Full-Scale Current Output Adjust (FSADJI). When the internal on-chip (IR
SET
current output adjust for I DAC and must be connected to AVSS through a resistor, see the Theory of Operation
section. Nominal value for this external resistor is 4 kΩ for 8 mA output current.
Auxiliary I DAC Output (AUXI). When the internal on-chip (IR
34 REFIO
Reference Input/Output. Serves as a reference input when the internal reference is disabled. Provides a 1.0 V
SET
reference output when in internal reference mode (a 0.1 μF capacitor to AVSS is required).
35 RESET/PINMD
This pin defines the operation mode of the part. A logic low (pull-down to DVSS) sets the part in SPI mode.
Pulse RESET high to reset the SPI registers to their default values.
A logic high (pull-up to DVDDIO) puts the device into pin mode (PINMD).
36 SCLK/CLKMD Clock Input for Serial Port (SCLK). In SPI mode, this pin is the clock input for the serial port.
Clock Mode (CLKMD). In pin mode, CLKMD determines the phase of the internal retiming clock. When
DCLKIO = CLKIN, tie it to 0. When DCLKIO ≠ CLKIN, pulse 0 to 1 to edge trigger the internal retime, see
the Retimer section.
37 SDIO/FORMAT Serial Port Input/Output (SDIO). In SPI mode, this pin is the bidirectional data line for the serial port.
Format Pin (FORMAT). In pin mode, FORMAT determines the data format of digital data. A logic low
(pull-down to DVSS) selects the binary input data format. A logic high (pull-up to DVDDIO) selects the
twos complement input data format.
38
/PWRDN Active Low Chip Select (CS). In SPI mode, this pin serves as the active low chip select.
CS
Power-Down (PWRDN). In pin mode, a logic high (pull-up to DVDDIO) powers down the device, except for
the SPI port.
39 DB13 (MSB) Digital Input (MSB).
40 DB12 Digital Input.
EP (EPAD)
The exposed pad is connected to AVSS and must be soldered to the ground plane. Exposed metal at the
package corners is connected to this pad.
) is enabled, this pin is connected to
CML
CML
) is disabled, this pin is the full-
SET
) is enabled, this pin is the auxiliary Q DAC output.